| New 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(); |
| |
| ?> |