Ejemplos de CairoContext::clip en PHP

Ejemplo n.º 1

Archivo: clip-nesting.php Proyecto: jamesan/cairo

<?php

$size = 100;
$border = 10;
$linewidth = 20;
$sur = new CairoImageSurface(CairoFormat::ARGB32, $size, $size);
$con = new CairoContext($sur);
$s = $con->getGroupTarget();
$c = new CairoContext($s);
$c->moveTo($border, $border);
$c->lineTo($border + $linewidth, $border);
$c->lineTo($size - $border, $size - $border);
$c->lineTo($size - $border - $linewidth, $size - $border);
$c->clip();
$c->setSourceRgb(0, 0, 1);
$c->paint();
$c->setSourceRgb(1, 1, 1);
$c->rectangle($size / 2 - $linewidth / 2, $border, $linewidth, $size - 2 * $border);
$c->fill();
$c2 = new CairoContext($sur);
$c2->setSourceRgb(1, 1, 1);
$c2->rectangle($size - $border - $linewidth, $border, $linewidth, $size - 2 * $border);
$c2->fill();
$con->setSourceRgb(1, 1, 1);
$con->rectangle($border, $border, $linewidth, $size - 2 * $border);
$con->fill();
$sur->writeToPng(dirname(__FILE__) . "/clip-nesting-php.png");

Ejemplo n.º 2

Archivo: clip-twice.php Proyecto: jamesan/cairo

<?php

$width = 64;
$height = 64;
$sur = new CairoImageSurface(CairoFormat::ARGB32, $width, $height);
$con = new CairoContext($sur);
$con->newPath();
$con->arc($width / 2, $height / 2, $width / 3, 0, 2 * M_PI);
$con->clip();
$con->newPath();
$con->moveTo(0, 0);
$con->lineTo($width / 4, $height / 2);
$con->lineTo(0, $height);
$con->lineTo($width, $height);
$con->lineTo(3 * $width / 4, $height / 2);
$con->lineTo($width, 0);
$con->closePath();
$con->clip();
$con->setSourceRgb(0, 0, 0.6);
$con->newPath();
$con->moveTo(0, 0);
$con->lineTo(0, $height);
$con->lineTo($width / 2, 3 * $height / 4);
$con->lineTo($width, $height);
$con->lineTo($width, 0);
$con->lineTo($width / 2, $height / 4);
$con->closePath();
$con->fill();
$con->newPath();
$con->arc($width / 2, $height / 2, $width / 5, 0, 2 * M_PI);
$con->clip();

Ejemplo n.º 3

Archivo: source-clip.php Proyecto: jamesan/cairo

<?php

$sur = new CairoImageSurface(CairoFormat::ARGB32, 12, 12);
$con = new CairoContext($sur);
$source = $sur->createSimilar(CairoContent::COLOR_ALPHA, 12, 12);
$con2 = new CairoContext($source);
/* Fill the source surface with green */
$con2->setSourceRgb(0, 1, 0);
$con2->paint();
/* Draw a blue square in the middle of the source with clipping,
 * and leave the clip there. */
$con2->rectangle(12 / 4, 12 / 4, 12 / 2, 12 / 2);
$con2->clip();
$con2->setSourceRgb(0, 0, 1);
$con2->paint();
/* Fill the destination surface with solid red (should not appear
 * in final result) */
$con->setSourceRgb(1, 0, 0);
$con->paint();
/* Now draw the source surface onto the destination surface */
$con->setSourceSurface($source, 0, 0);
$con->paint();
$sur->writeToPng(dirname(__FILE__) . '/source-clip.png');