import v2.0.0.0_RC3 | 2012-07-01
https://github.com/lucanos/CommunityID -> http://www.itadmins.net/archives/357
This commit is contained in:
798
libs/jpgraph/contour_dev/findpolygon.php
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798
libs/jpgraph/contour_dev/findpolygon.php
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@ -0,0 +1,798 @@
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<?php
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require_once '../jpgraph.php';
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require_once '../jpgraph_canvas.php';
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require_once '../jpgraph_canvtools.php';
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/*
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* To change this template, choose Tools | Templates
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* and open the template in the editor.
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*/
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/**
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* Description of test_findpolygon
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*
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* @author ljp
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*/
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class Findpolygon {
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private $nbrContours=-1;
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public $contourCoord=array();
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private $scale = array(0,6,0,8);
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function flattenEdges($p) {
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$fp=array();
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for ($i = 0 ; $i < count($p) ; $i++) {
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$fp[] = $p[$i][0];
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$fp[] = $p[$i][1];
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}
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return $fp;
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}
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function SetupTestData() {
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// for($i=0; $i<count($this->contourCoord[0]); ++$i) {
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// echo '('.$this->contourCoord[0][$i][0][0].','.$this->contourCoord[0][$i][0][1].') -> '.
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// '('.$this->contourCoord[0][$i][1][0].','.$this->contourCoord[0][$i][1][1].")\n";
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// }
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//
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$c=0;
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$p[$c] = array(0.6,1, 1,0.5, 2,0.5, 3,0.5, 3.5,1, 3.5,2, 3,2.5, 2,2.5, 1,2.5, 0.5,2, 0.6,1);
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$c++;
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$p[$c] = array(6,0.5, 5.5,1, 5.5,2, 6,2.5);
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$this->nbrContours = $c+1;
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for ($c = 0 ; $c < count($p) ; $c++) {
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$n=count($p[$c]);
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$this->contourCoord[$c][0] = array(array($p[$c][0],$p[$c][1]),array($p[$c][2],$p[$c][3]));
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$k=1;
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for ($i = 0; $i < ($n-4)/2; $i++, $k++) {
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$this->contourCoord[$c][$k] = array($this->contourCoord[$c][$k-1][1], array($p[$c][2*$k+2],$p[$c][2*$k+1+2]));
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}
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// Swap edges order at random
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$n = count($this->contourCoord[$c]);
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for($i=0; $i < floor($n/2); ++$i) {
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$swap1 = rand(0,$n-1);
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$t = $this->contourCoord[$c][$swap1];
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while( $swap1 == ($swap2 = rand(0,$n-1)) )
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;
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$this->contourCoord[$c][$swap1] = $this->contourCoord[$c][$swap2];
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$this->contourCoord[$c][$swap2] = $t;
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}
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// Swap vector direction on 1/3 of the edges
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for ($i = 0 ; $i < floor(count($this->contourCoord[$c])/3) ; $i++) {
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$e = rand(0, count($this->contourCoord[$c])-1);
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$edge = $this->contourCoord[$c][$e];
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$v1 = $edge[0]; $v2 = $edge[1];
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$this->contourCoord[$c][$e][0] = $v2;
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$this->contourCoord[$c][$e][1] = $v1;
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}
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}
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$pp = array();
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for($j=0; $j < count($p); ++$j ) {
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for( $i=0; $i < count($p[$j])/2; ++$i ) {
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$pp[$j][$i] = array($p[$j][2*$i],$p[$j][2*$i+1]);
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}
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}
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return $pp;
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}
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function p_edges($v) {
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for ($i = 0 ; $i < count($v) ; $i++) {
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echo "(".$v[$i][0][0].",".$v[$i][0][1].") -> (".$v[$i][1][0].",".$v[$i][1][1].")\n";
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}
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echo "\n";
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}
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function CompareCyclic($a,$b,$forward=true) {
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// We assume disjoint vertices and if last==first this just means
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// that the polygon is closed. For this comparison it must be unique
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// elements
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if( $a[count($a)-1] == $a[0] ) {
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array_pop($a);
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}
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if( $b[count($b)-1] == $b[0] ) {
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array_pop($b);
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}
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$n1 = count($a); $n2 = count($b);
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if( $n1 != $n2 )
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return false;
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$i=0;
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while( ($i < $n2) && ($a[0] != $b[$i]) )
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++$i;
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if( $i >= $n2 )
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return false;
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$j=0;
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if( $forward ) {
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while( ($j < $n1) && ($a[$j] == $b[$i]) ) {
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$i = ($i + 1) % $n2;
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++$j;
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}
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}
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else {
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while( ($j < $n1) && ($a[$j] == $b[$i]) ) {
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--$i;
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if( $i < 0 ) {
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$i = $n2-1;
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}
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++$j;
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}
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}
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return $j >= $n1;
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}
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function dbg($s) {
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// echo $s."\n";
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}
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function IsVerticeOnBorder($x1,$y1) {
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// Check if the vertice lies on any of the four border
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if( $x1==$this->scale[0] || $x1==$this->scale[1] ) {
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return true;
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}
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if( $y1==$this->scale[2] || $y1==$this->scale[3] ) {
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return true;
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}
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return false;
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}
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function FindPolygons($debug=false) {
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$pol = 0;
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for ($c = 0; $c < $this->nbrContours; $c++) {
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$this->dbg("\n** Searching polygon chain $c ... ");
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$this->dbg("------------------------------------------\n");
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$edges = $this->contourCoord[$c];
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while( count($edges) > 0 ) {
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$edge = array_shift($edges);
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list($x1,$y1) = $edge[0];
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list($x2,$y2) = $edge[1];
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$polygons[$pol]=array(
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array($x1,$y1),array($x2,$y2)
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);
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$this->dbg("Searching on second vertice.");
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$found=false;
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if( ! $this->IsVerticeOnBorder($x2,$y2) ) {
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do {
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$this->dbg(" --Searching on edge: ($x1,$y1)->($x2,$y2)");
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$found=false;
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$nn = count($edges);
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for( $i=0; $i < $nn && !$found; ++$i ) {
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$edge = $edges[$i];
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if( $found = ($x2==$edge[0][0] && $y2==$edge[0][1]) ) {
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$polygons[$pol][] = array($edge[1][0],$edge[1][1]);
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$x1 = $x2; $y1 = $y2;
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$x2 = $edge[1][0]; $y2 = $edge[1][1];
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}
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elseif( $found = ($x2==$edge[1][0] && $y2==$edge[1][1]) ) {
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$polygons[$pol][] = array($edge[0][0],$edge[0][1]);
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$x1 = $x2; $y1 = $y2;
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$x2 = $edge[0][0]; $y2 = $edge[0][1];
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}
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if( $found ) {
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$this->dbg(" --Found next edge: [i=$i], (%,%) -> ($x2,$y2)");
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unset($edges[$i]);
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$edges = array_values($edges);
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}
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}
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} while( $found );
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}
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if( !$found && count($edges)>0 ) {
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$this->dbg("Searching on first vertice.");
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list($x1,$y1) = $polygons[$pol][0];
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list($x2,$y2) = $polygons[$pol][1];
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if( ! $this->IsVerticeOnBorder($x1,$y1) ) {
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do {
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$this->dbg(" --Searching on edge: ($x1,$y1)->($x2,$y2)");
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$found=false;
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$nn = count($edges);
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for( $i=0; $i < $nn && !$found; ++$i ) {
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$edge = $edges[$i];
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if( $found = ($x1==$edge[0][0] && $y1==$edge[0][1]) ) {
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array_unshift($polygons[$pol],array($edge[1][0],$edge[1][1]));
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$x2 = $x1; $y2 = $y1;
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$x1 = $edge[1][0]; $y1 = $edge[1][1];
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}
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elseif( $found = ($x1==$edge[1][0] && $y1==$edge[1][1]) ) {
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array_unshift($polygons[$pol],array($edge[0][0],$edge[0][1]));
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$x2 = $x1; $y2 = $y1;
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$x1 = $edge[0][0]; $y1 = $edge[0][1];
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}
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if( $found ) {
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$this->dbg(" --Found next edge: [i=$i], ($x1,$y1) -> (%,%)");
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unset($edges[$i]);
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$edges = array_values($edges);
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}
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}
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} while( $found );
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}
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}
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$pol++;
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}
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}
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return $polygons;
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}
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}
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define('HORIZ_EDGE',0);
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define('VERT_EDGE',1);
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class FillGridRect {
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private $edges,$dataPoints,$colors,$isoBars;
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private $invert=false;
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function __construct(&$edges,&$dataPoints,$isoBars,$colors) {
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$this->edges = $edges;
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$this->dataPoints = $dataPoints;
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$this->colors = $colors;
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$this->isoBars = $isoBars;
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}
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function GetIsobarColor($val) {
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for ($i = 0 ; $i < count($this->isoBars) ; $i++) {
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if( $val <= $this->isoBars[$i] ) {
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return $this->colors[$i];
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}
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}
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return $this->colors[$i]; // The color for all values above the highest isobar
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}
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function GetIsobarVal($a,$b) {
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// Get the isobar that is between the values a and b
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// If there are more isobars then return the one with lowest index
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if( $b < $a ) {
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$t=$a; $a=$b; $b=$t;
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}
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$i = 0 ;
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$n = count($this->isoBars);
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while( $i < $n && $this->isoBars[$i] < $a ) {
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++$i;
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}
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if( $i >= $n )
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die("Internal error. Cannot find isobar values for ($a,$b)");
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return $this->isoBars[$i];
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}
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function getCrossingCoord($aRow,$aCol,$aEdgeDir,$aIsobarVal) {
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// In order to avoid numerical problem when two vertices are very close
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// we have to check and avoid dividing by close to zero denumerator.
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if( $aEdgeDir == HORIZ_EDGE ) {
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$d = abs($this->dataPoints[$aRow][$aCol] - $this->dataPoints[$aRow][$aCol+1]);
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if( $d > 0.001 ) {
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$xcoord = $aCol + abs($aIsobarVal - $this->dataPoints[$aRow][$aCol]) / $d;
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}
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else {
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$xcoord = $aCol;
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}
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$ycoord = $aRow;
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}
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else {
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$d = abs($this->dataPoints[$aRow][$aCol] - $this->dataPoints[$aRow+1][$aCol]);
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if( $d > 0.001 ) {
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$ycoord = $aRow + abs($aIsobarVal - $this->dataPoints[$aRow][$aCol]) / $d;
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}
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else {
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$ycoord = $aRow;
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}
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$xcoord = $aCol;
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}
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if( $this->invert ) {
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$ycoord = $this->nbrRows-1 - $ycoord;
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}
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return array($xcoord,$ycoord);
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}
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function Fill(ContCanvas $canvas) {
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$nx_vertices = count($this->dataPoints[0]);
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$ny_vertices = count($this->dataPoints);
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// Loop through all squares in the grid
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for($col=0; $col < $nx_vertices-1; ++$col) {
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for($row=0; $row < $ny_vertices-1; ++$row) {
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$n = 0;$quad_edges=array();
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if ( $this->edges[VERT_EDGE][$row][$col] ) $quad_edges[$n++] = array($row, $col, VERT_EDGE);
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if ( $this->edges[VERT_EDGE][$row][$col+1] ) $quad_edges[$n++] = array($row, $col+1,VERT_EDGE);
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if ( $this->edges[HORIZ_EDGE][$row][$col] ) $quad_edges[$n++] = array($row, $col, HORIZ_EDGE);
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if ( $this->edges[HORIZ_EDGE][$row+1][$col] ) $quad_edges[$n++] = array($row+1,$col, HORIZ_EDGE);
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if( $n == 0 ) {
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// Easy, fill the entire quadrant with one color since we have no crossings
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// Select the top left datapoint as representing this quadrant
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// color for this quadrant
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$color = $this->GetIsobarColor($this->dataPoints[$row][$col]);
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$polygon = array($col,$row,$col,$row+1,$col+1,$row+1,$col+1,$row,$col,$row);
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$canvas->FilledPolygon($polygon,$color);
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} elseif( $n==2 ) {
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// There is one isobar edge crossing this quadrant. In order to fill we need to
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// find out the orientation of the two areas this edge is separating in order to
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// construct the two polygons that define the two areas to be filled
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// There are six possible variants
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// 0) North-South
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// 1) West-East
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// 2) West-North
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// 3) East-North
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// 4) West-South
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// 5) East-South
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$type=-1;
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if( $this->edges[HORIZ_EDGE][$row][$col] ) {
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if( $this->edges[HORIZ_EDGE][$row+1][$col] ) $type=0; // North-South
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elseif( $this->edges[VERT_EDGE][$row][$col] ) $type=2;
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elseif( $this->edges[VERT_EDGE][$row][$col+1] ) $type=3;
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}
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elseif( $this->edges[HORIZ_EDGE][$row+1][$col] ) {
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if( $this->edges[VERT_EDGE][$row][$col] ) $type=4;
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elseif( $this->edges[VERT_EDGE][$row][$col+1] ) $type=5;
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}
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else {
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$type=1;
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}
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if( $type==-1 ) {
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die('Internal error: n=2 but no edges in the quadrant was find to determine type.');
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}
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switch( $type ) {
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case 0: //North-South
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// North vertice
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$v1 = $this->dataPoints[$row][$col];
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$v2 = $this->dataPoints[$row][$col+1];
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$isobarValue = $this->GetIsobarVal($v1, $v2);
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list($x1,$y1) = $this->getCrossingCoord($row, $col,HORIZ_EDGE, $isobarValue);
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// South vertice
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$v1 = $this->dataPoints[$row+1][$col];
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$v2 = $this->dataPoints[$row+1][$col+1];
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$isobarValue = $this->GetIsobarVal($v1, $v2);
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list($x2,$y2) = $this->getCrossingCoord($row+1, $col,HORIZ_EDGE, $isobarValue);
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$polygon = array($col,$row,$x1,$y1,$x2,$y2,$col,$row+1,$col,$row);
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$canvas->FilledPolygon($polygon,$this->GetIsobarColor($v1));
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$polygon = array($col+1,$row,$x1,$y1,$x2,$y2,$col+1,$row+1,$col+1,$row);
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$canvas->FilledPolygon($polygon,$this->GetIsobarColor($v2));
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break;
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case 1: // West-East
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// West vertice
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$v1 = $this->dataPoints[$row][$col];
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$v2 = $this->dataPoints[$row+1][$col];
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$isobarValue = $this->GetIsobarVal($v1, $v2);
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list($x1,$y1) = $this->getCrossingCoord($row, $col,VERT_EDGE, $isobarValue);
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// East vertice
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$v1 = $this->dataPoints[$row][$col+1];
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$v2 = $this->dataPoints[$row+1][$col+1];
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$isobarValue = $this->GetIsobarVal($v1, $v2);
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list($x2,$y2) = $this->getCrossingCoord($row, $col+1,VERT_EDGE, $isobarValue);
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$polygon = array($col,$row,$x1,$y1,$x2,$y2,$col+1,$row,$col,$row);
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$canvas->FilledPolygon($polygon,$this->GetIsobarColor($v1));
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$polygon = array($col,$row+1,$x1,$y1,$x2,$y2,$col+1,$row+1,$col,$row+1);
|
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$canvas->FilledPolygon($polygon,$this->GetIsobarColor($v2));
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break;
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case 2: // West-North
|
||||
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// West vertice
|
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$v1 = $this->dataPoints[$row][$col];
|
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$v2 = $this->dataPoints[$row+1][$col];
|
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$isobarValue = $this->GetIsobarVal($v1, $v2);
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list($x1,$y1) = $this->getCrossingCoord($row, $col,VERT_EDGE, $isobarValue);
|
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|
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// North vertice
|
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$v1 = $this->dataPoints[$row][$col];
|
||||
$v2 = $this->dataPoints[$row][$col+1];
|
||||
$isobarValue = $this->GetIsobarVal($v1, $v2);
|
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list($x2,$y2) = $this->getCrossingCoord($row, $col,HORIZ_EDGE, $isobarValue);
|
||||
|
||||
$polygon = array($col,$row,$x1,$y1,$x2,$y2,$col,$row);
|
||||
$canvas->FilledPolygon($polygon,$this->GetIsobarColor($v1));
|
||||
|
||||
$polygon = array($x1,$y1,$x2,$y2,$col+1,$row,$col+1,$row+1,$col,$row+1,$x1,$y1);
|
||||
$canvas->FilledPolygon($polygon,$this->GetIsobarColor($v2));
|
||||
|
||||
break;
|
||||
|
||||
case 3: // East-North
|
||||
|
||||
// if( $row==3 && $col==1 && $n==2 ) {
|
||||
// echo " ** East-North<br>";
|
||||
// }
|
||||
|
||||
|
||||
// East vertice
|
||||
$v1 = $this->dataPoints[$row][$col+1];
|
||||
$v2 = $this->dataPoints[$row+1][$col+1];
|
||||
$isobarValue = $this->GetIsobarVal($v1, $v2);
|
||||
list($x1,$y1) = $this->getCrossingCoord($row, $col+1,VERT_EDGE, $isobarValue);
|
||||
//
|
||||
// if( $row==3 && $col==1 && $n==2 ) {
|
||||
// echo " ** E_val($v1,$v2), isobar=$isobarValue<br>";
|
||||
// echo " ** E($x1,$y1)<br>";
|
||||
// }
|
||||
|
||||
|
||||
// North vertice
|
||||
$v1 = $this->dataPoints[$row][$col];
|
||||
$v2 = $this->dataPoints[$row][$col+1];
|
||||
$isobarValue = $this->GetIsobarVal($v1, $v2);
|
||||
list($x2,$y2) = $this->getCrossingCoord($row, $col,HORIZ_EDGE, $isobarValue);
|
||||
|
||||
// if( $row==3 && $col==1 && $n==2 ) {
|
||||
// echo " ** N_val($v1,$v2), isobar=$isobarValue<br>";
|
||||
// echo " ** N($x2,$y2)<br>";
|
||||
// }
|
||||
// if( $row==3 && $col==1 && $n==2 )
|
||||
// $canvas->Line($x1,$y1,$x2,$y2,'blue');
|
||||
|
||||
$polygon = array($x1,$y1,$x2,$y2,$col+1,$row,$x1,$y1);
|
||||
$canvas->FilledPolygon($polygon,$this->GetIsobarColor($v2));
|
||||
|
||||
$polygon = array($col,$row,$x2,$y2,$x1,$y1,$col+1,$row+1,$col,$row+1,$col,$row);
|
||||
$canvas->FilledPolygon($polygon,$this->GetIsobarColor($v1));
|
||||
|
||||
break;
|
||||
|
||||
case 4: // West-South
|
||||
|
||||
// West vertice
|
||||
$v1 = $this->dataPoints[$row][$col];
|
||||
$v2 = $this->dataPoints[$row+1][$col];
|
||||
$isobarValue = $this->GetIsobarVal($v1, $v2);
|
||||
list($x1,$y1) = $this->getCrossingCoord($row, $col,VERT_EDGE, $isobarValue);
|
||||
|
||||
// South vertice
|
||||
$v1 = $this->dataPoints[$row+1][$col];
|
||||
$v2 = $this->dataPoints[$row+1][$col+1];
|
||||
$isobarValue = $this->GetIsobarVal($v1, $v2);
|
||||
list($x2,$y2) = $this->getCrossingCoord($row+1, $col,HORIZ_EDGE, $isobarValue);
|
||||
|
||||
$polygon = array($col,$row+1,$x1,$y1,$x2,$y2,$col,$row+1);
|
||||
$canvas->FilledPolygon($polygon,$this->GetIsobarColor($v1));
|
||||
|
||||
$polygon = array($x1,$y1,$x2,$y2,$col+1,$row+1,$col+1,$row,$col,$row,$x1,$y1);
|
||||
$canvas->FilledPolygon($polygon,$this->GetIsobarColor($v2));
|
||||
|
||||
break;
|
||||
|
||||
case 5: // East-South
|
||||
|
||||
//
|
||||
// if( $row==1 && $col==1 && $n==2 ) {
|
||||
// echo " ** Sout-East<br>";
|
||||
// }
|
||||
|
||||
// East vertice
|
||||
$v1 = $this->dataPoints[$row][$col+1];
|
||||
$v2 = $this->dataPoints[$row+1][$col+1];
|
||||
$isobarValue = $this->GetIsobarVal($v1, $v2);
|
||||
list($x1,$y1) = $this->getCrossingCoord($row, $col+1,VERT_EDGE, $isobarValue);
|
||||
|
||||
// if( $row==1 && $col==1 && $n==2 ) {
|
||||
// echo " ** E_val($v1,$v2), isobar=$isobarValue<br>";
|
||||
// echo " ** E($x1,$y1)<br>";
|
||||
// }
|
||||
|
||||
// South vertice
|
||||
$v1 = $this->dataPoints[$row+1][$col];
|
||||
$v2 = $this->dataPoints[$row+1][$col+1];
|
||||
$isobarValue = $this->GetIsobarVal($v1, $v2);
|
||||
list($x2,$y2) = $this->getCrossingCoord($row+1, $col,HORIZ_EDGE, $isobarValue);
|
||||
|
||||
// if( $row==1 && $col==1 && $n==2 ) {
|
||||
// echo " ** S_val($v1,$v2), isobar=$isobarValue<br>";
|
||||
// echo " ** S($x2,$y2)<br>";
|
||||
// }
|
||||
|
||||
$polygon = array($col+1,$row+1,$x1,$y1,$x2,$y2,$col+1,$row+1);
|
||||
$canvas->FilledPolygon($polygon,$this->GetIsobarColor($v2));
|
||||
|
||||
$polygon = array($x1,$y1,$x2,$y2,$col,$row+1,$col,$row,$col+1,$row,$x1,$y1);
|
||||
$canvas->FilledPolygon($polygon,$this->GetIsobarColor($v1));
|
||||
|
||||
break;
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
class ContCanvas {
|
||||
public $g;
|
||||
public $shape,$scale;
|
||||
function __construct($xmax=6,$ymax=6,$width=400,$height=400) {
|
||||
|
||||
$this->g = new CanvasGraph($width,$height);
|
||||
$this->scale = new CanvasScale($this->g, 0, $xmax, 0, $ymax);
|
||||
$this->shape = new Shape($this->g, $this->scale);
|
||||
|
||||
//$this->g->SetFrame(true);
|
||||
$this->g->SetMargin(5,5,5,5);
|
||||
$this->g->SetMarginColor('white@1');
|
||||
$this->g->InitFrame();
|
||||
|
||||
|
||||
$this->shape->SetColor('gray');
|
||||
for( $col=1; $col<$xmax; ++$col ) {
|
||||
$this->shape->Line($col, 0, $col, $ymax);
|
||||
}
|
||||
for( $row=1; $row<$ymax; ++$row ) {
|
||||
$this->shape->Line(0, $row, $xmax, $row);
|
||||
}
|
||||
}
|
||||
|
||||
function SetDatapoints($datapoints) {
|
||||
$ny=count($datapoints);
|
||||
$nx=count($datapoints[0]);
|
||||
$t = new Text();
|
||||
$t->SetFont(FF_ARIAL,FS_NORMAL,8);
|
||||
for( $x=0; $x < $nx; ++$x ) {
|
||||
for( $y=0; $y < $ny; ++$y ) {
|
||||
list($x1,$y1) = $this->scale->Translate($x,$y);
|
||||
|
||||
if( $datapoints[$y][$x] > 0 )
|
||||
$t->SetColor('blue');
|
||||
else
|
||||
$t->SetColor('black');
|
||||
$t->SetFont(FF_ARIAL,FS_BOLD,8);
|
||||
$t->Set($datapoints[$y][$x]);
|
||||
$t->Stroke($this->g->img,$x1,$y1);
|
||||
|
||||
$t->SetColor('gray');
|
||||
$t->SetFont(FF_ARIAL,FS_NORMAL,8);
|
||||
$t->Set("($y,$x)");
|
||||
$t->Stroke($this->g->img,$x1+10,$y1);
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function DrawLinePolygons($p,$color='red') {
|
||||
$this->shape->SetColor($color);
|
||||
for ($i = 0 ; $i < count($p) ; $i++) {
|
||||
$x1 = $p[$i][0][0]; $y1 = $p[$i][0][1];
|
||||
for ($j = 1 ; $j < count($p[$i]) ; $j++) {
|
||||
$x2=$p[$i][$j][0]; $y2 = $p[$i][$j][1];
|
||||
$this->shape->Line($x1, $y1, $x2, $y2);
|
||||
$x1=$x2; $y1=$y2;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function Line($x1,$y1,$x2,$y2,$color='red') {
|
||||
$this->shape->SetColor($color);
|
||||
$this->shape->Line($x1, $y1, $x2, $y2);
|
||||
}
|
||||
function Polygon($p,$color='blue') {
|
||||
$this->shape->SetColor($color);
|
||||
$this->shape->Polygon($p);
|
||||
}
|
||||
|
||||
function FilledPolygon($p,$color='lightblue') {
|
||||
$this->shape->SetColor($color);
|
||||
$this->shape->FilledPolygon($p);
|
||||
}
|
||||
|
||||
function Point($x,$y,$color) {
|
||||
list($x1,$y1) = $this->scale->Translate($x, $y);
|
||||
$this->shape->SetColor($color);
|
||||
$this->g->img->Point($x1,$y1);
|
||||
}
|
||||
|
||||
function Stroke() {
|
||||
$this->g->Stroke();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
class PixelFill {
|
||||
|
||||
private $edges,$dataPoints,$colors,$isoBars;
|
||||
|
||||
function __construct(&$edges,&$dataPoints,$isoBars,$colors) {
|
||||
$this->edges = $edges;
|
||||
$this->dataPoints = $dataPoints;
|
||||
$this->colors = $colors;
|
||||
$this->isoBars = $isoBars;
|
||||
}
|
||||
|
||||
function GetIsobarColor($val) {
|
||||
for ($i = 0 ; $i < count($this->isoBars) ; $i++) {
|
||||
if( $val <= $this->isoBars[$i] ) {
|
||||
return $this->colors[$i];
|
||||
}
|
||||
}
|
||||
return $this->colors[$i]; // The color for all values above the highest isobar
|
||||
}
|
||||
|
||||
function Fill(ContCanvas $canvas) {
|
||||
|
||||
$nx_vertices = count($this->dataPoints[0]);
|
||||
$ny_vertices = count($this->dataPoints);
|
||||
|
||||
// Loop through all squares in the grid
|
||||
for($col=0; $col < $nx_vertices-1; ++$col) {
|
||||
for($row=0; $row < $ny_vertices-1; ++$row) {
|
||||
|
||||
$v=array(
|
||||
$this->dataPoints[$row][$col],
|
||||
$this->dataPoints[$row][$col+1],
|
||||
$this->dataPoints[$row+1][$col+1],
|
||||
$this->dataPoints[$row+1][$col],
|
||||
);
|
||||
|
||||
list($x1,$y1) = $canvas->scale->Translate($col, $row);
|
||||
list($x2,$y2) = $canvas->scale->Translate($col+1, $row+1);
|
||||
|
||||
for( $x=$x1; $x < $x2; ++$x ) {
|
||||
for( $y=$y1; $y < $y2; ++$y ) {
|
||||
|
||||
$v1 = $v[0] + ($v[1]-$v[0])*($x-$x1)/($x2-$x1);
|
||||
$v2 = $v[3] + ($v[2]-$v[3])*($x-$x1)/($x2-$x1);
|
||||
$val = $v1 + ($v2-$v1)*($y-$y1)/($y2-$y1);
|
||||
|
||||
if( $row==2 && $col==2 ) {
|
||||
//echo " ($val ($x,$y)) (".$v[0].",".$v[1].",".$v[2].",".$v[3].")<br>";
|
||||
}
|
||||
$color = $this->GetIsobarColor($val);
|
||||
$canvas->g->img->SetColor($color);
|
||||
$canvas->g->img->Point($x, $y);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
$edges=array(array(),array(),array());
|
||||
$datapoints=array();
|
||||
for($col=0; $col<6; $col++) {
|
||||
for($row=0; $row<6; $row++) {
|
||||
$datapoints[$row][$col]=0;
|
||||
$edges[VERT_EDGE][$row][$col] = false;
|
||||
$edges[HORIZ_EDGE][$row][$col] = false;
|
||||
}
|
||||
}
|
||||
|
||||
$datapoints[1][2] = 2;
|
||||
$datapoints[2][1] = 1;
|
||||
$datapoints[2][2] = 7;
|
||||
$datapoints[2][3] = 2;
|
||||
$datapoints[3][1] = 2;
|
||||
$datapoints[3][2] = 17;
|
||||
$datapoints[3][3] = 4;
|
||||
$datapoints[4][2] = 3;
|
||||
|
||||
$datapoints[1][4] = 12;
|
||||
|
||||
$edges[VERT_EDGE][1][2] = true;
|
||||
$edges[VERT_EDGE][3][2] = true;
|
||||
|
||||
$edges[HORIZ_EDGE][2][1] = true;
|
||||
$edges[HORIZ_EDGE][2][2] = true;
|
||||
$edges[HORIZ_EDGE][3][1] = true;
|
||||
$edges[HORIZ_EDGE][3][2] = true;
|
||||
|
||||
|
||||
|
||||
$isobars = array(5,10,15);
|
||||
$colors = array('lightgray','lightblue','lightred','red');
|
||||
|
||||
$engine = new PixelFill($edges, $datapoints, $isobars, $colors);
|
||||
$canvas = new ContCanvas();
|
||||
$engine->Fill($canvas);
|
||||
$canvas->SetDatapoints($datapoints);
|
||||
$canvas->Stroke();
|
||||
die();
|
||||
|
||||
|
||||
//$tst = new Findpolygon();
|
||||
//$p1 = $tst->SetupTestData();
|
||||
//
|
||||
//$canvas = new ContCanvas();
|
||||
//for ($i = 0 ; $i < count($tst->contourCoord); $i++) {
|
||||
// $canvas->DrawLinePolygons($tst->contourCoord[$i]);
|
||||
//}
|
||||
//
|
||||
//$p2 = $tst->FindPolygons();
|
||||
//for ($i = 0 ; $i < count($p2) ; $i++) {
|
||||
// $canvas->FilledPolygon($tst->flattenEdges($p2[$i]));
|
||||
//}
|
||||
//
|
||||
//for ($i = 0 ; $i < count($p2) ; $i++) {
|
||||
// $canvas->Polygon($tst->flattenEdges($p2[$i]));
|
||||
//}
|
||||
//
|
||||
//$canvas->Stroke();
|
||||
//die();
|
||||
|
||||
|
||||
//for( $trial = 0; $trial < 1; ++$trial ) {
|
||||
// echo "\nTest $trial:\n";
|
||||
// echo "========================================\n";
|
||||
// $tst = new Findpolygon();
|
||||
// $p1 = $tst->SetupTestData();
|
||||
//
|
||||
// // for ($i = 0 ; $i < count($p1) ; $i++) {
|
||||
// // echo "Test polygon $i:\n";
|
||||
// // echo "---------------------\n";
|
||||
// // $tst->p_edges($tst->contourCoord[$i]);
|
||||
// // echo "\n";
|
||||
// // }
|
||||
// //
|
||||
// $p2 = $tst->FindPolygons();
|
||||
// $npol = count($p2);
|
||||
// //echo "\n** Found $npol separate polygon chains.\n\n";
|
||||
//
|
||||
// for( $i=0; $i<$npol; ++$i ) {
|
||||
//
|
||||
// $res_forward = $tst->CompareCyclic($p1[$i], $p2[$i],true);
|
||||
// $res_backward = $tst->CompareCyclic($p1[$i], $p2[$i],false);
|
||||
// if( $res_backward || $res_forward ) {
|
||||
// // if( $res_forward )
|
||||
// // echo "Forward matches!\n";
|
||||
// // else
|
||||
// // echo "Backward matches!\n";
|
||||
// }
|
||||
// else {
|
||||
// echo "********** NO MATCH!!.\n\n";
|
||||
// echo "\nBefore find:\n";
|
||||
// for ($j = 0 ; $j < count($p1[$i]) ; $j++) {
|
||||
// echo "(".$p1[$i][$j][0].','.$p1[$i][$j][1]."), ";
|
||||
// }
|
||||
// echo "\n";
|
||||
//
|
||||
// echo "\nAfter find:\n";
|
||||
// for ($j = 0 ; $j < count($p2[$i]) ; $j++) {
|
||||
// echo "(".$p2[$i][$j][0].','.$p2[$i][$j][1]."), ";
|
||||
// }
|
||||
// echo "\n";
|
||||
// }
|
||||
//
|
||||
// }
|
||||
//}
|
||||
//
|
||||
//echo "\n\nAll tests ready.\n\n";
|
||||
//
|
||||
|
||||
|
||||
?>
|
||||
790
libs/jpgraph/contour_dev/tri-quad.php
Normal file
790
libs/jpgraph/contour_dev/tri-quad.php
Normal file
@ -0,0 +1,790 @@
|
||||
<?php
|
||||
require_once '../jpgraph.php';
|
||||
require_once '../jpgraph_canvas.php';
|
||||
require_once '../jpgraph_canvtools.php';
|
||||
|
||||
|
||||
class ContCanvas {
|
||||
public $g;
|
||||
public $shape,$scale;
|
||||
function __construct($xmax=5,$ymax=5,$width=350,$height=350) {
|
||||
|
||||
$this->g = new CanvasGraph($width,$height);
|
||||
$this->scale = new CanvasScale($this->g, 0, $xmax, 0, $ymax);
|
||||
$this->shape = new Shape($this->g, $this->scale);
|
||||
|
||||
//$this->g->SetFrame(true);
|
||||
$this->g->SetMargin(2,2,2,2);
|
||||
$this->g->SetMarginColor('white@1');
|
||||
$this->g->InitFrame();
|
||||
}
|
||||
|
||||
function StrokeGrid() {
|
||||
list($xmin,$xmax,$ymin,$ymax) = $this->scale->Get();
|
||||
$this->shape->SetColor('gray');
|
||||
for( $col=1; $col<$xmax; ++$col ) {
|
||||
$this->shape->Line($col, 0, $col, $ymax);
|
||||
}
|
||||
for( $row=1; $row<$ymax; ++$row ) {
|
||||
$this->shape->Line(0, $row, $xmax, $row);
|
||||
}
|
||||
}
|
||||
|
||||
function SetDatapoints($datapoints) {
|
||||
$ny=count($datapoints);
|
||||
$nx=count($datapoints[0]);
|
||||
$t = new Text();
|
||||
$t->SetFont(FF_ARIAL,FS_NORMAL,8);
|
||||
for( $x=0; $x < $nx; ++$x ) {
|
||||
for( $y=0; $y < $ny; ++$y ) {
|
||||
list($x1,$y1) = $this->scale->Translate($x,$y);
|
||||
|
||||
if( $datapoints[$y][$x] > 0 )
|
||||
$t->SetColor('blue');
|
||||
else
|
||||
$t->SetColor('black');
|
||||
$t->SetFont(FF_ARIAL,FS_BOLD,8);
|
||||
$t->Set($datapoints[$y][$x]);
|
||||
$t->Stroke($this->g->img,$x1,$y1);
|
||||
|
||||
$t->SetColor('gray');
|
||||
$t->SetFont(FF_ARIAL,FS_NORMAL,8);
|
||||
$t->Set("($y,$x)");
|
||||
$t->Stroke($this->g->img,$x1+10,$y1);
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function DrawLinePolygons($p,$color='red') {
|
||||
$this->shape->SetColor($color);
|
||||
for ($i = 0 ; $i < count($p) ; $i++) {
|
||||
$x1 = $p[$i][0][0]; $y1 = $p[$i][0][1];
|
||||
for ($j = 1 ; $j < count($p[$i]) ; $j++) {
|
||||
$x2=$p[$i][$j][0]; $y2 = $p[$i][$j][1];
|
||||
$this->shape->Line($x1, $y1, $x2, $y2);
|
||||
$x1=$x2; $y1=$y2;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function Line($x1,$y1,$x2,$y2,$color='red') {
|
||||
$this->shape->SetColor($color);
|
||||
$this->shape->Line($x1, $y1, $x2, $y2);
|
||||
}
|
||||
function Polygon($p,$color='blue') {
|
||||
$this->shape->SetColor($color);
|
||||
$this->shape->Polygon($p);
|
||||
}
|
||||
|
||||
function FilledPolygon($p,$color='lightblue') {
|
||||
$this->shape->SetColor($color);
|
||||
$this->shape->FilledPolygon($p);
|
||||
}
|
||||
|
||||
function Point($x,$y,$color) {
|
||||
list($x1,$y1) = $this->scale->Translate($x, $y);
|
||||
$this->shape->SetColor($color);
|
||||
$this->g->img->Point($x1,$y1);
|
||||
}
|
||||
|
||||
function Stroke() {
|
||||
$this->g->Stroke();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// Calculate the area for a simple polygon. This will not work for
|
||||
// non-simple polygons, i.e. self crossing.
|
||||
function polygonArea($aX, $aY) {
|
||||
$n = count($aX);
|
||||
$area = 0 ;
|
||||
$j = 0 ;
|
||||
for ($i=0; $i < $n; $i++) {
|
||||
$j++;
|
||||
if ( $j == $n) {
|
||||
$j=0;
|
||||
}
|
||||
$area += ($aX[i]+$aX[j])*($aY[i]-$aY[j]);
|
||||
}
|
||||
return area*.5;
|
||||
}
|
||||
|
||||
class SingleTestTriangle {
|
||||
const contval=5;
|
||||
static $maxdepth=2;
|
||||
static $cnt=0;
|
||||
static $t;
|
||||
public $g;
|
||||
public $shape,$scale;
|
||||
public $cont = array(2,4,5);
|
||||
public $contcolors = array('yellow','purple','seagreen','green','lightblue','blue','teal','orange','red','darkred','brown');
|
||||
public $dofill=false;
|
||||
public $showtriangulation=false,$triangulation_color="lightgray";
|
||||
public $showannotation=false;
|
||||
public $contlinecolor='black',$showcontlines=true;
|
||||
private $labels = array(), $showlabels=false;
|
||||
private $labelColor='black',$labelFF=FF_ARIAL,$labelFS=FS_BOLD,$labelFSize=9;
|
||||
|
||||
function __construct($width,$height,$nx,$ny) {
|
||||
$xmax=$nx+0.1;$ymax=$ny+0.1;
|
||||
$this->g = new CanvasGraph($width,$height);
|
||||
$this->scale = new CanvasScale($this->g, -0.1, $xmax, -0.1, $ymax);
|
||||
$this->shape = new Shape($this->g, $this->scale);
|
||||
|
||||
//$this->g->SetFrame(true);
|
||||
$this->g->SetMargin(2,2,2,2);
|
||||
$this->g->SetMarginColor('white@1');
|
||||
//$this->g->InitFrame();
|
||||
|
||||
self::$t = new Text();
|
||||
self::$t->SetColor('black');
|
||||
self::$t->SetFont(FF_ARIAL,FS_BOLD,9);
|
||||
self::$t->SetAlign('center','center');
|
||||
}
|
||||
|
||||
function getPlotSize() {
|
||||
return array($this->g->img->width,$this->g->img->height);
|
||||
}
|
||||
|
||||
function SetContours($c) {
|
||||
$this->cont = $c;
|
||||
}
|
||||
|
||||
function ShowLabels($aFlg=true) {
|
||||
$this->showlabels = $aFlg;
|
||||
}
|
||||
|
||||
function ShowLines($aFlg=true) {
|
||||
$this->showcontlines=$aFlg;
|
||||
}
|
||||
|
||||
function SetFilled($f=true) {
|
||||
$this->dofill = $f;
|
||||
}
|
||||
|
||||
function ShowTriangulation($f=true) {
|
||||
$this->showtriangulation = $f;
|
||||
}
|
||||
|
||||
function Stroke() {
|
||||
$this->g->Stroke();
|
||||
}
|
||||
|
||||
function FillPolygon($color,&$p) {
|
||||
self::$cnt++;
|
||||
if( $this->dofill ) {
|
||||
$this->shape->SetColor($color);
|
||||
$this->shape->FilledPolygon($p);
|
||||
}
|
||||
if( $this->showtriangulation ) {
|
||||
$this->shape->SetColor($this->triangulation_color);
|
||||
$this->shape->Polygon($p);
|
||||
}
|
||||
}
|
||||
|
||||
function GetNextHigherContourIdx($val) {
|
||||
for( $i=0; $i < count($this->cont); ++$i ) {
|
||||
if( $val < $this->cont[$i] ) return $i;
|
||||
}
|
||||
return count($this->cont);
|
||||
}
|
||||
|
||||
function GetContVal($v1) {
|
||||
for( $i=0; $i < count($this->cont); ++$i ) {
|
||||
if( $this->cont[$i] > $v1 ) {
|
||||
return $this->cont[$i];
|
||||
}
|
||||
}
|
||||
die('No contour value is larger or equal than : '.$v1);
|
||||
}
|
||||
|
||||
function GetColor($v) {
|
||||
return $this->contcolors[$this->GetNextHigherContourIdx($v)];
|
||||
}
|
||||
|
||||
function storeAnnotation($x1,$y1,$v1,$angle) {
|
||||
$this->labels[$this->GetNextHigherContourIdx($v1)][] = array($x1,$y1,$v1,$angle);
|
||||
}
|
||||
|
||||
function labelProx($x1,$y1,$v1) {
|
||||
|
||||
list($w,$h) = $this->getPlotSize();
|
||||
|
||||
|
||||
if( $x1 < 20 || $x1 > $w-20 )
|
||||
return true;
|
||||
|
||||
if( $y1 < 20 || $y1 > $h-20 )
|
||||
return true;
|
||||
|
||||
if( !isset ($this->labels[$this->GetNextHigherContourIdx($v1)]) ) {
|
||||
return false;
|
||||
}
|
||||
$p = $this->labels[$this->GetNextHigherContourIdx($v1)];
|
||||
$n = count($p);
|
||||
$d = 999999;
|
||||
for ($i = 0 ; $i < $n ; $i++) {
|
||||
$xp = $p[$i][0];
|
||||
$yp = $p[$i][1];
|
||||
$d = min($d, ($x1-$xp)*($x1-$xp) + ($y1-$yp)*($y1-$yp));
|
||||
}
|
||||
|
||||
$limit = $w*$h/9;
|
||||
$limit = max(min($limit,20000),3500);
|
||||
if( $d < $limit ) return true;
|
||||
else return false;
|
||||
}
|
||||
|
||||
function putLabel($x1,$y1,$x2,$y2,$v1) {
|
||||
|
||||
$angle = 0;
|
||||
if( $x2 - $x1 != 0 ) {
|
||||
$grad = ($y2-$y1)/($x2-$x1);
|
||||
$angle = -(atan($grad) * 180/M_PI);
|
||||
self::$t->SetAngle($angle);
|
||||
}
|
||||
|
||||
$x = $this->scale->TranslateX($x1);
|
||||
$y = $this->scale->TranslateY($y1);
|
||||
if( !$this->labelProx($x, $y, $v1) ) {
|
||||
$this->storeAnnotation($x, $y, $v1, $angle);
|
||||
}
|
||||
}
|
||||
|
||||
function strokeLabels() {
|
||||
$t = new Text();
|
||||
$t->SetColor($this->labelColor);
|
||||
$t->SetFont($this->labelFF,$this->labelFS,$this->labelFSize);
|
||||
$t->SetAlign('center','center');
|
||||
|
||||
foreach ($this->labels as $cont_idx => $pos) {
|
||||
if( $cont_idx >= 10 ) return;
|
||||
foreach ($pos as $idx => $coord) {
|
||||
$t->Set( sprintf("%.1f",$coord[2]) );
|
||||
$t->SetAngle($coord[3]);
|
||||
$t->Stroke($this->g->img,$coord[0],$coord[1]);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function annotate($x1,$y1,$x2,$y2,$x1p,$y1p,$v1,$v2,$v1p) {
|
||||
if( !$this->showannotation ) return;
|
||||
/*
|
||||
$this->g->img->SetColor('green');
|
||||
$this->g->img->FilledCircle($this->scale->TranslateX($x1),$this->scale->TranslateY($y1), 4);
|
||||
$this->g->img->FilledCircle($this->scale->TranslateX($x2),$this->scale->TranslateY($y2), 4);
|
||||
|
||||
$this->g->img->SetColor('red');
|
||||
$this->g->img->FilledCircle($this->scale->TranslateX($x1p),$this->scale->TranslateY($y1p), 4);
|
||||
*/
|
||||
//self::$t->Set(sprintf("%.1f",$v1,$this->VC($v1)));
|
||||
//self::$t->Stroke($this->g->img,$this->scale->TranslateX($x1),$this->scale->TranslateY($y1));
|
||||
//self::$t->Set(sprintf("%.1f",$v2,$this->VC($v2)));
|
||||
//self::$t->Stroke($this->g->img,$this->scale->TranslateX($x2),$this->scale->TranslateY($y2));
|
||||
|
||||
$x = $this->scale->TranslateX($x1p);
|
||||
$y = $this->scale->TranslateY($y1p);
|
||||
if( !$this->labelProx($x, $y, $v1p) ) {
|
||||
$this->storeAnnotation($x, $y, $v1p);
|
||||
self::$t->Set(sprintf("%.1f",$v1p,$this->VC($v1p)));
|
||||
self::$t->Stroke($this->g->img,$x,$y);
|
||||
}
|
||||
}
|
||||
|
||||
function Pertubate(&$v1,&$v2,&$v3,&$v4) {
|
||||
$pert = 0.9999;
|
||||
$n = count($this->cont);
|
||||
for($i=0; $i < $n; ++$i) {
|
||||
if( $v1==$this->cont[$i] ) {
|
||||
$v1 *= $pert;
|
||||
break;
|
||||
}
|
||||
}
|
||||
for($i=0; $i < $n; ++$i) {
|
||||
if( $v2==$this->cont[$i] ) {
|
||||
$v2 *= $pert;
|
||||
break;
|
||||
}
|
||||
}
|
||||
for($i=0; $i < $n; ++$i) {
|
||||
if( $v3==$this->cont[$i] ) {
|
||||
$v3 *= $pert;
|
||||
break;
|
||||
}
|
||||
}
|
||||
for($i=0; $i < $n; ++$i) {
|
||||
if( $v4==$this->cont[$i] ) {
|
||||
$v4 *= $pert;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function interp2($x1,$y1,$x2,$y2,$v1,$v2) {
|
||||
$cv = $this->GetContVal(min($v1,$v2));
|
||||
$alpha = ($v1-$cv)/($v1-$v2);
|
||||
$x1p = $x1*(1-$alpha) + $x2*$alpha;
|
||||
$y1p = $y1*(1-$alpha) + $y2*$alpha;
|
||||
$v1p = $v1 + $alpha*($v2-$v1);
|
||||
return array($x1p,$y1p,$v1p);
|
||||
}
|
||||
|
||||
function RectFill($v1,$v2,$v3,$v4,$x1,$y1,$x2,$y2,$x3,$y3,$x4,$y4,$depth) {
|
||||
if( $depth >= self::$maxdepth ) {
|
||||
// Abort and just appoximate the color of this area
|
||||
// with the average of the three values
|
||||
$color = $this->GetColor(($v1+$v2+$v3+$v4)/4);
|
||||
$p = array($x1, $y1, $x2, $y2, $x3, $y3, $x4, $y4, $x1, $y1);
|
||||
$this->FillPolygon($color,$p) ;
|
||||
}
|
||||
else {
|
||||
|
||||
$this->Pertubate($v1,$v2,$v3,$v4);
|
||||
|
||||
$fcnt = 0 ;
|
||||
$vv1 = $this->GetNextHigherContourIdx($v1);
|
||||
$vv2 = $this->GetNextHigherContourIdx($v2);
|
||||
$vv3 = $this->GetNextHigherContourIdx($v3);
|
||||
$vv4 = $this->GetNextHigherContourIdx($v4);
|
||||
$eps = 0.0001;
|
||||
|
||||
if( $vv1 == $vv2 && $vv2 == $vv3 && $vv3 == $vv4 ) {
|
||||
$color = $this->GetColor($v1);
|
||||
$p = array($x1, $y1, $x2, $y2, $x3, $y3, $x4, $y4, $x1, $y1);
|
||||
$this->FillPolygon($color,$p) ;
|
||||
}
|
||||
else {
|
||||
|
||||
$dv1 = abs($vv1-$vv2);
|
||||
$dv2 = abs($vv2-$vv3);
|
||||
$dv3 = abs($vv3-$vv4);
|
||||
$dv4 = abs($vv1-$vv4);
|
||||
|
||||
if( $dv1 == 1 ) {
|
||||
list($x1p,$y1p,$v1p) = $this->interp2($x1,$y1,$x2,$y2,$v1,$v2);
|
||||
$fcnt++;
|
||||
}
|
||||
|
||||
if( $dv2 == 1 ) {
|
||||
list($x2p,$y2p,$v2p) = $this->interp2($x2,$y2,$x3,$y3,$v2,$v3);
|
||||
$fcnt++;
|
||||
}
|
||||
|
||||
if( $dv3 == 1 ) {
|
||||
list($x3p,$y3p,$v3p) = $this->interp2($x3,$y3,$x4,$y4,$v3,$v4);
|
||||
$fcnt++;
|
||||
}
|
||||
|
||||
if( $dv4 == 1 ) {
|
||||
list($x4p,$y4p,$v4p) = $this->interp2($x4,$y4,$x1,$y1,$v4,$v1);
|
||||
$fcnt++;
|
||||
}
|
||||
|
||||
$totdv = $dv1 + $dv2 + $dv3 + $dv4 ;
|
||||
|
||||
if( ($fcnt == 2 && $totdv==2) || ($fcnt == 4 && $totdv==4) ) {
|
||||
|
||||
if( $fcnt == 2 && $totdv==2 ) {
|
||||
|
||||
if( $dv1 == 1 && $dv2 == 1) {
|
||||
$color1 = $this->GetColor($v2);
|
||||
$p1 = array($x1p,$y1p,$x2,$y2,$x2p,$y2p,$x1p,$y1p);
|
||||
$color2 = $this->GetColor($v4);
|
||||
$p2 = array($x1,$y1,$x1p,$y1p,$x2p,$y2p,$x3,$y3,$x4,$y4,$x1,$y1);
|
||||
|
||||
$color = $this->GetColor($v1p);
|
||||
$p = array($x1p,$y1p,$x2p,$y2p);
|
||||
$v = $v1p;
|
||||
}
|
||||
elseif( $dv1 == 1 && $dv3 == 1 ) {
|
||||
$color1 = $this->GetColor($v2);
|
||||
$p1 = array($x1p,$y1p,$x2,$y2,$x3,$y3,$x3p,$y3p,$x1p,$y1p);
|
||||
$color2 = $this->GetColor($v4);
|
||||
$p2 = array($x1,$y1,$x1p,$y1p,$x3p,$y3p,$x4,$y4,$x1,$y1);
|
||||
|
||||
$color = $this->GetColor($v1p);
|
||||
$p = array($x1p,$y1p,$x3p,$y3p);
|
||||
$v = $v1p;
|
||||
}
|
||||
elseif( $dv1 == 1 && $dv4 == 1 ) {
|
||||
$color1 = $this->GetColor($v1);
|
||||
$p1 = array($x1,$y1,$x1p,$y1p,$x4p,$y4p,$x1,$y1);
|
||||
$color2 = $this->GetColor($v3);
|
||||
$p2 = array($x1p,$y1p,$x2,$y2,$x3,$y3,$x4,$y4,$x4p,$y4p,$x1p,$y1p);
|
||||
|
||||
$color = $this->GetColor($v1p);
|
||||
$p = array($x1p,$y1p,$x4p,$y4p);
|
||||
$v = $v1p;
|
||||
}
|
||||
elseif( $dv2 == 1 && $dv4 == 1 ) {
|
||||
$color1 = $this->GetColor($v1);
|
||||
$p1 = array($x1,$y1,$x2,$y2,$x2p,$y2p,$x4p,$y4p,$x1,$y1);
|
||||
$color2 = $this->GetColor($v3);
|
||||
$p2 = array($x4p,$y4p,$x2p,$y2p,$x3,$y3,$x4,$y4,$x4p,$y4p);
|
||||
|
||||
$color = $this->GetColor($v2p);
|
||||
$p = array($x2p,$y2p,$x4p,$y4p);
|
||||
$v = $v2p;
|
||||
}
|
||||
elseif( $dv2 == 1 && $dv3 == 1 ) {
|
||||
$color1 = $this->GetColor($v1);
|
||||
$p1 = array($x1,$y1,$x2,$y2,$x2p,$y2p,$x3p,$y3p,$x4,$y4,$x1,$y1);
|
||||
$color2 = $this->GetColor($v3);
|
||||
$p2 = array($x2p,$y2p,$x3,$y3,$x3p,$y3p,$x2p,$y2p);
|
||||
|
||||
$color = $this->GetColor($v2p);
|
||||
$p = array($x2p,$y2p,$x3p,$y3p);
|
||||
$v = $v2p;
|
||||
}
|
||||
elseif( $dv3 == 1 && $dv4 == 1 ) {
|
||||
$color1 = $this->GetColor($v1);
|
||||
$p1 = array($x1,$y1,$x2,$y2,$x3,$y3,$x3p,$y3p,$x4p,$y4p,$x1,$y1);
|
||||
$color2 = $this->GetColor($v4);
|
||||
$p2 = array($x4p,$y4p,$x3p,$y3p,$x4,$y4,$x4p,$y4p);
|
||||
|
||||
$color = $this->GetColor($v4p);
|
||||
$p = array($x4p,$y4p,$x3p,$y3p);
|
||||
$v = $v4p;
|
||||
}
|
||||
|
||||
$this->FillPolygon($color1,$p1);
|
||||
$this->FillPolygon($color2,$p2);
|
||||
|
||||
if( $this->showcontlines ) {
|
||||
if( $this->dofill ) {
|
||||
$this->shape->SetColor($this->contlinecolor);
|
||||
}
|
||||
else {
|
||||
$this->shape->SetColor($color);
|
||||
}
|
||||
$this->shape->Line($p[0],$p[1],$p[2],$p[3]);
|
||||
}
|
||||
if( $this->showlabels ) {
|
||||
$this->putLabel( ($p[0]+$p[2])/2, ($p[1]+$p[3])/2, $p[2],$p[3] , $v);
|
||||
}
|
||||
}
|
||||
elseif( $fcnt == 4 && $totdv==4 ) {
|
||||
$vc = ($v1+$v2+$v3+$v4)/4;
|
||||
|
||||
if( $v1p == $v2p && $v2p == $v3p && $v3p == $v4p ) {
|
||||
// Four edge crossings (saddle point) of the same contour
|
||||
// so we first need to
|
||||
// find out how the saddle is crossing "/" or "\"
|
||||
|
||||
if( $this->GetNextHigherContourIdx($vc) == $this->GetNextHigherContourIdx($v1) ) {
|
||||
// "\"
|
||||
$color1 = $this->GetColor($v1);
|
||||
$p1 = array($x1,$y1,$x1p,$y1p,$x4p,$y4p,$x1,$y1);
|
||||
|
||||
$color2 = $this->GetColor($v2);
|
||||
$p2 = array($x1p,$y1p,$x2,$y2,$x2p,$y2p,$x3p,$y3p,$x4,$y4,$x4p,$y4p,$x1p,$y1p);
|
||||
|
||||
$color3 = $color1;
|
||||
$p3 = array($x2p,$y2p,$x3,$y3,$x3p,$y3p,$x2p,$y2p);
|
||||
|
||||
$colorl1 = $this->GetColor($v1p);
|
||||
$pl1 = array($x1p,$y1p,$x4p,$y4p);
|
||||
$colorl2 = $this->GetColor($v2p);
|
||||
$pl2 = array($x2p,$y2p,$x3p,$y3p);
|
||||
$vl1 = $v1p; $vl2 = $v2p;
|
||||
|
||||
}
|
||||
else {
|
||||
// "/"
|
||||
$color1 = $this->GetColor($v2);
|
||||
$p1 = array($x1p,$y1p,$x2,$y2,$x2p,$y2p,$x1p,$y1p);
|
||||
|
||||
$color2 = $this->GetColor($v3);
|
||||
$p2 = array($x1p,$y1p,$x2p,$y2p,$x3,$y3,$x3p,$y3p,$x4p,$y4p,$x1,$y1,$x1p,$y1p);
|
||||
|
||||
$color3 = $color1;
|
||||
$p3 = array($x4p,$y4p,$x3p,$y3p,$x4,$y4,$x4p,$y4p);
|
||||
|
||||
$colorl1 = $this->GetColor($v1p);
|
||||
$pl1 = array($x1p,$y1p,$x2p,$y2p);
|
||||
$colorl2 = $this->GetColor($v4p);
|
||||
$pl2 = array($x4p,$y4p,$x3p,$y3p);
|
||||
$vl1 = $v1p; $vl2 = $v4p;
|
||||
}
|
||||
}
|
||||
else {
|
||||
// There are two different contours crossing so we need to find
|
||||
// out which belongs to which
|
||||
if( $v1p == $v2p ) {
|
||||
// "/"
|
||||
$color1 = $this->GetColor($v2);
|
||||
$p1 = array($x1p,$y1p,$x2,$y2,$x2p,$y2p,$x1p,$y1p);
|
||||
|
||||
$color2 = $this->GetColor($v3);
|
||||
$p2 = array($x1p,$y1p,$x2p,$y2p,$x3,$y3,$x3p,$y3p,$x4p,$y4p,$x1,$y1,$x1p,$y1p);
|
||||
|
||||
$color3 = $this->GetColor($v4);
|
||||
$p3 = array($x4p,$y4p,$x3p,$y3p,$x4,$y4,$x4p,$y4p);
|
||||
|
||||
$colorl1 = $this->GetColor($v1p);
|
||||
$pl1 = array($x1p,$y1p,$x2p,$y2p);
|
||||
$colorl2 = $this->GetColor($v4p);
|
||||
$pl2 = array($x4p,$y4p,$x3p,$y3p);
|
||||
$vl1 = $v1p; $vl2 = $v4p;
|
||||
}
|
||||
else { //( $v1p == $v4p )
|
||||
// "\"
|
||||
$color1 = $this->GetColor($v1);
|
||||
$p1 = array($x1,$y1,$x1p,$y1p,$x4p,$y4p,$x1,$y1);
|
||||
|
||||
$color2 = $this->GetColor($v2);
|
||||
$p2 = array($x1p,$y1p,$x2,$y2,$x2p,$y2p,$x3p,$y3p,$x4,$y4,$x4p,$y4p,$x1p,$y1p);
|
||||
|
||||
$color3 = $this->GetColor($v3);
|
||||
$p3 = array($x2p,$y2p,$x3,$y3,$x3p,$y3p,$x2p,$y2p);
|
||||
|
||||
$colorl1 = $this->GetColor($v1p);
|
||||
$pl1 = array($x1p,$y1p,$x4p,$y4p);
|
||||
$colorl2 = $this->GetColor($v2p);
|
||||
$pl2 = array($x2p,$y2p,$x3p,$y3p);
|
||||
$vl1 = $v1p; $vl2 = $v2p;
|
||||
}
|
||||
}
|
||||
$this->FillPolygon($color1,$p1);
|
||||
$this->FillPolygon($color2,$p2);
|
||||
$this->FillPolygon($color3,$p3);
|
||||
|
||||
if( $this->showcontlines ) {
|
||||
if( $this->dofill ) {
|
||||
$this->shape->SetColor($this->contlinecolor);
|
||||
$this->shape->Line($pl1[0],$pl1[1],$pl1[2],$pl1[3]);
|
||||
$this->shape->Line($pl2[0],$pl2[1],$pl2[2],$pl2[3]);
|
||||
}
|
||||
else {
|
||||
$this->shape->SetColor($colorl1);
|
||||
$this->shape->Line($pl1[0],$pl1[1],$pl1[2],$pl1[3]);
|
||||
$this->shape->SetColor($colorl2);
|
||||
$this->shape->Line($pl2[0],$pl2[1],$pl2[2],$pl2[3]);
|
||||
}
|
||||
}
|
||||
if( $this->showlabels ) {
|
||||
$this->putLabel( ($pl1[0]+$pl1[2])/2, ($pl1[1]+$pl1[3])/2, $pl1[2], $pl1[3], $vl1);
|
||||
$this->putLabel( ($pl2[0]+$pl2[2])/2, ($pl2[1]+$pl2[3])/2, $pl2[2], $pl2[3],$vl2);
|
||||
}
|
||||
}
|
||||
}
|
||||
else {
|
||||
$vc = ($v1+$v2+$v3+$v4)/4;
|
||||
$xc = ($x1+$x4)/2;
|
||||
$yc = ($y1+$y2)/2;
|
||||
|
||||
// Top left
|
||||
$this->RectFill(($v1+$v2)/2, $v2, ($v2+$v3)/2, $vc,
|
||||
$x1,$yc, $x2,$y2, $xc,$y2, $xc,$yc, $depth+1);
|
||||
// Top right
|
||||
$this->RectFill($vc, ($v2+$v3)/2, $v3, ($v3+$v4)/2,
|
||||
$xc,$yc, $xc,$y2, $x3,$y3, $x3,$yc, $depth+1);
|
||||
|
||||
// Bottom left
|
||||
$this->RectFill($v1, ($v1+$v2)/2, $vc, ($v1+$v4)/2,
|
||||
$x1,$y1, $x1,$yc, $xc,$yc, $xc,$y4, $depth+1);
|
||||
|
||||
// Bottom right
|
||||
$this->RectFill(($v1+$v4)/2, $vc, ($v3+$v4)/2, $v4,
|
||||
$xc,$y1, $xc,$yc, $x3,$yc, $x4,$y4, $depth+1);
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function TriFill($v1,$v2,$v3,$x1,$y1,$x2,$y2,$x3,$y3,$depth) {
|
||||
if( $depth >= self::$maxdepth ) {
|
||||
// Abort and just appoximate the color of this area
|
||||
// with the average of the three values
|
||||
$color = $this->GetColor(($v1+$v2+$v3)/3);
|
||||
$p = array($x1, $y1, $x2, $y2, $x3, $y3, $x1, $y1);
|
||||
$this->FillPolygon($color,$p) ;
|
||||
}
|
||||
else {
|
||||
// In order to avoid some real unpleasentness in case a vertice is exactly
|
||||
// the same value as a contour we pertuberate them so that we do not end up
|
||||
// in udefined situation. This will only affect the calculations and not the
|
||||
// visual appearance
|
||||
|
||||
$dummy=0;
|
||||
$this->Pertubate($v1,$v2,$v3,$dummy);
|
||||
|
||||
$fcnt = 0 ;
|
||||
$vv1 = $this->GetNextHigherContourIdx($v1);
|
||||
$vv2 = $this->GetNextHigherContourIdx($v2);
|
||||
$vv3 = $this->GetNextHigherContourIdx($v3);
|
||||
$eps = 0.0001;
|
||||
|
||||
if( $vv1 == $vv2 && $vv2 == $vv3 ) {
|
||||
$color = $this->GetColor($v1);
|
||||
$p = array($x1, $y1, $x2, $y2, $x3, $y3, $x1, $y1);
|
||||
$this->FillPolygon($color,$p) ;
|
||||
}
|
||||
else {
|
||||
$dv1 = abs($vv1-$vv2);
|
||||
$dv2 = abs($vv2-$vv3);
|
||||
$dv3 = abs($vv1-$vv3);
|
||||
|
||||
if( $dv1 == 1 ) {
|
||||
list($x1p,$y1p,$v1p) = $this->interp2($x1,$y1,$x2,$y2,$v1,$v2);
|
||||
$fcnt++;
|
||||
}
|
||||
else {
|
||||
$x1p = ($x1+$x2)/2;
|
||||
$y1p = ($y1+$y2)/2;
|
||||
$v1p = ($v1+$v2)/2;
|
||||
}
|
||||
|
||||
if( $dv2 == 1 ) {
|
||||
list($x2p,$y2p,$v2p) = $this->interp2($x2,$y2,$x3,$y3,$v2,$v3);
|
||||
$fcnt++;
|
||||
}
|
||||
else {
|
||||
$x2p = ($x2+$x3)/2;
|
||||
$y2p = ($y2+$y3)/2;
|
||||
$v2p = ($v2+$v3)/2;
|
||||
}
|
||||
|
||||
if( $dv3 == 1 ) {
|
||||
list($x3p,$y3p,$v3p) = $this->interp2($x3,$y3,$x1,$y1,$v3,$v1);
|
||||
$fcnt++;
|
||||
}
|
||||
else {
|
||||
$x3p = ($x3+$x1)/2;
|
||||
$y3p = ($y3+$y1)/2;
|
||||
$v3p = ($v3+$v1)/2;
|
||||
}
|
||||
|
||||
if( $fcnt == 2 &&
|
||||
((abs($v1p-$v2p) < $eps && $dv1 ==1 && $dv2==1 ) ||
|
||||
(abs($v1p-$v3p) < $eps && $dv1 ==1 && $dv3==1 ) ||
|
||||
(abs($v2p-$v3p) < $eps && $dv2 ==1 && $dv3==1 )) ) {
|
||||
|
||||
// This means that the contour line crosses exactly two sides
|
||||
// and that the values of each vertice is such that only this
|
||||
// contour line will cross this section.
|
||||
// We can now be smart. The cotour line will simply divide the
|
||||
// area in two polygons that we can fill and then return. There is no
|
||||
// need to recurse.
|
||||
|
||||
// First find out which two sides the contour is crossing
|
||||
if( abs($v1p-$v2p) < $eps ) {
|
||||
$p4 = array($x1,$y1,$x1p,$y1p,$x2p,$y2p,$x3,$y3,$x1,$y1);
|
||||
$color4 = $this->GetColor($v1);
|
||||
|
||||
$p3 = array($x1p,$y1p,$x2,$y2,$x2p,$y2p,$x1p,$y1p);
|
||||
$color3 = $this->GetColor($v2);
|
||||
|
||||
$p = array($x1p,$y1p,$x2p,$y2p);
|
||||
$color = $this->GetColor($v1p);
|
||||
$v = $v1p;
|
||||
}
|
||||
elseif( abs($v1p-$v3p) < $eps ) {
|
||||
$p4 = array($x1p,$y1p,$x2,$y2,$x3,$y3,$x3p,$y3p,$x1p,$y1p);
|
||||
$color4 = $this->GetColor($v2);
|
||||
|
||||
$p3 = array($x1,$y1,$x1p,$y1p,$x3p,$y3p,$x1,$y1);
|
||||
$color3 = $this->GetColor($v1);
|
||||
|
||||
$p = array($x1p,$y1p,$x3p,$y3p);
|
||||
$color = $this->GetColor($v1p);
|
||||
$v = $v1p;
|
||||
}
|
||||
else {
|
||||
$p4 = array($x1,$y1,$x2,$y2,$x2p,$y2p,$x3p,$y3p,$x1,$y1);
|
||||
$color4 = $this->GetColor($v2);
|
||||
|
||||
$p3 = array($x3p,$y3p,$x2p,$y2p,$x3,$y3,$x3p,$y3p);
|
||||
$color3 = $this->GetColor($v3);
|
||||
|
||||
$p = array($x3p,$y3p,$x2p,$y2p);
|
||||
$color = $this->GetColor($v3p);
|
||||
$v = $v3p;
|
||||
}
|
||||
$this->FillPolygon($color4,$p4);
|
||||
$this->FillPolygon($color3,$p3);
|
||||
|
||||
if( $this->showcontlines ) {
|
||||
if( $this->dofill ) {
|
||||
$this->shape->SetColor($this->contlinecolor);
|
||||
}
|
||||
else {
|
||||
$this->shape->SetColor($color);
|
||||
}
|
||||
$this->shape->Line($p[0],$p[1],$p[2],$p[3]);
|
||||
}
|
||||
if( $this->showlabels ) {
|
||||
$this->putLabel( ($p[0]+$p[2])/2, ($p[1]+$p[3])/2, $p[2], $p[3], $v);
|
||||
}
|
||||
}
|
||||
else {
|
||||
$this->TriFill($v1, $v1p, $v3p, $x1, $y1, $x1p, $y1p, $x3p, $y3p, $depth+1);
|
||||
$this->TriFill($v1p, $v2, $v2p, $x1p, $y1p, $x2, $y2, $x2p, $y2p, $depth+1);
|
||||
$this->TriFill($v3p, $v1p, $v2p, $x3p, $y3p, $x1p, $y1p, $x2p, $y2p, $depth+1);
|
||||
$this->TriFill($v3p, $v2p, $v3, $x3p, $y3p, $x2p, $y2p, $x3, $y3, $depth+1);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function Fill($v1,$v2,$v3,$maxdepth) {
|
||||
$x1=0; $y1=1;
|
||||
$x2=1; $y2=0;
|
||||
$x3=1; $y3=1;
|
||||
self::$maxdepth = $maxdepth;
|
||||
$this->TriFill($v1, $v2, $v3, $x1, $y1, $x2, $y2, $x3, $y3, 0);
|
||||
}
|
||||
|
||||
function Fillmesh($meshdata,$maxdepth,$method='tri') {
|
||||
$nx = count($meshdata[0]);
|
||||
$ny = count($meshdata);
|
||||
self::$maxdepth = $maxdepth;
|
||||
for( $x=0; $x < $nx-1; ++$x ) {
|
||||
for( $y=0; $y < $ny-1; ++$y ) {
|
||||
$v1 = $meshdata[$y][$x];
|
||||
$v2 = $meshdata[$y][$x+1];
|
||||
$v3 = $meshdata[$y+1][$x+1];
|
||||
$v4 = $meshdata[$y+1][$x];
|
||||
|
||||
if( $method == 'tri' ) {
|
||||
// Fill upper and lower triangle
|
||||
$this->TriFill($v4, $v1, $v2, $x, $y+1, $x, $y, $x+1, $y, 0);
|
||||
$this->TriFill($v4, $v2, $v3, $x, $y+1, $x+1, $y, $x+1, $y+1, 0);
|
||||
}
|
||||
else {
|
||||
$this->RectFill($v4, $v1, $v2, $v3, $x, $y+1, $x, $y, $x+1, $y, $x+1, $y+1, 0);
|
||||
}
|
||||
}
|
||||
}
|
||||
if( $this->showlabels ) {
|
||||
$this->strokeLabels();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
$meshdata = array(
|
||||
array (12,12,10,10),
|
||||
array (10,10,8,14),
|
||||
array (7,7,13,17),
|
||||
array (4,5,8,12),
|
||||
array (10,8,7,8));
|
||||
|
||||
$tt = new SingleTestTriangle(400,400,count($meshdata[0])-1,count($meshdata)-1);
|
||||
$tt->SetContours(array(4.7, 6.0, 7.2, 8.6, 9.9, 11.2, 12.5, 13.8, 15.1, 16.4));
|
||||
$tt->SetFilled(true);
|
||||
|
||||
//$tt->ShowTriangulation(true);
|
||||
$tt->ShowLines(true);
|
||||
|
||||
//$tt->ShowLabels(true);
|
||||
$tt->Fillmesh($meshdata, 8, 'rect');
|
||||
|
||||
//$tt->Fill(4.0,3.0,7.0, 4);
|
||||
//$tt->Fill(7,4,1,5);
|
||||
//$tt->Fill(1,7,4,5);
|
||||
|
||||
$tt->Stroke();
|
||||
|
||||
?>
|
||||
Reference in New Issue
Block a user