public function test()
{
$this->status = "Setting up";
$max = 5 * LayeredCanvas::NUM_BLEND_MODES;
$this->doProgress(0, $max);
// Set up a layered canvas for compositing our image
$sw = 320;
// $this->rect->w;
$ssw = $sw / 5;
$sh = 240;
$c = new Canvas($sw * 4, $sh * 4, 0);
$f = new BitmapFont(3);
$f2 = new BitmapFont(0);
$fb = new BitmapFont(7);
$fb->drawText($c, $c->width - $sw + 20, $c->height - 50, "Cherry LayeredCanvas Demo", 0xffffff);
$f->drawText($c, $c->width - $sw + 20, $c->height - 30, "Showing all " . LayeredCanvas::NUM_BLEND_MODES . " available blend modes", 0xffffff);
// Preload our canvases
$c2 = Canvas::createFromFile("320x240-1.png");
$c1 = Canvas::createFromFile("320x240-2.png");
$cs1 = new Canvas($ssw, $sh);
$cs2 = new Canvas($ssw, $sh);
for ($blend = 0; $blend < LayeredCanvas::NUM_BLEND_MODES; $blend++) {
$this->status = "Rendering " . LayeredCanvas::$blendmodes[$blend];
$tslice = [];
for ($slice = 0; $slice < 5; $slice++) {
$c1->draw($cs1, $cs1->getRect(), new Rect($ssw * $slice, 0, $ssw, $sh));
$c2->draw($cs2, $cs2->getRect(), new Rect($ssw * $slice, 0, $ssw, $sh));
$lc = new LayeredCanvas($ssw, $sh, $cs1);
$lc->addLayer($cs2, $cs2->getRect(), $blend, $slice * 0.25);
$tstart = microtime(true);
$co = $lc->getCompositeCanvas();
$tslice[] = (double) (microtime(true) - $tstart);
$col = $blend % 4;
$row = floor($blend / 4);
$ostr = sprintf("%d%%", max(0, min(100, $slice * 25)));
$f2->drawTextUp($co, $ssw - 11, $sh - 4, $ostr, 0x0);
$f2->drawTextUp($co, $ssw - 12, $sh - 5, $ostr, 0xffffff);
$co->draw($c, new Rect($col * $sw + $ssw * $slice, $row * $sh, $ssw, $sh));
$this->doProgress($blend * 5 + $slice, $max);
}
$modestr = sprintf("%s", LayeredCanvas::$blendmodes[$blend]);
$f->drawText($c, $col * $sw + 6, $row * $sh + 6, $modestr, 0x0);
$f->drawText($c, $col * $sw + 5, $row * $sh + 5, $modestr, 0xffffff);
$tslice = array_sum($tslice);
$timestr = sprintf("Mode %d", $blend);
$f2->drawText($c, $col * $sw + 6, $row * $sh + 21, $timestr, 0x0);
$f2->drawText($c, $col * $sw + 5, $row * $sh + 20, $timestr, 0xffffff);
}
$this->status = "Done";
$this->doProgress($max, $max, true);
$c->save("composite.png");
return;
}
public function __construct($filename)
{
// Load the image to analyze from disk
$this->img = Canvas::createFromFile($filename);
$this->log("Loaded canvas of [{$this->img->width}x{$this->img->height}] for analysis");
}
