swen100 / cairo

examples/finer-grained-fallbacks.php

<?php

use Cairo\Context;

The type Cairo\Context was not found. Maybe you did not declare it correctly or list all dependencies?

use Cairo\Operator;

The type Cairo\Operator was not found. Maybe you did not declare it correctly or list all dependencies?

use Cairo\Surface\Image;

The type Cairo\Surface\Image was not found. Maybe you did not declare it correctly or list all dependencies?

use Cairo\Surface\ImageFormat;

The type Cairo\Surface\ImageFormat was not found. Maybe you did not declare it correctly or list all dependencies?

$cisize = 10;
$pad = 2;
$width = $cisize * 6.5 + $pad;
$height = $cisize * 3.5 + $pad;

function drawCircle($context, $cisize, $x, $y)
{
	$context->save();
	$context->translate($x, $y);
	$context->arc(0, 0, $cisize / 2, 0, 2 * M_PI);
	$context->fill();
	$context->restore();
}

function drawCircles($context, $cisize)
{
	drawCircle($context, $cisize, 0, $cisize * -0.1);
	drawCircle($context, $cisize, $cisize * 0.4, $cisize * 0.25);
	drawCircle($context, $cisize, $cisize * 2, 0);
	drawCircle($context, $cisize, $cisize * 4, 0);
	drawCircle($context, $cisize, $cisize * 6, 0);
}

$surface = new Image(ImageFormat::ARGB32, $width, $height);
$context = new Context($surface);

$context->translate($pad, $pad);
$context->setSourceRgb(0, 1, 0);
$context->setOperator(Operator::OVER);
drawCircle($context, $cisize, $cisize * 0.5, $cisize * 1.5);
$context->setSourceRgb(1, 0, 0);
$context->setOperator(Operator::ADD);
drawCircle($context, $cisize, $cisize * 0.75, $cisize * 1.75);
$context->setSourceRgb(0, 1, 0);
$context->setOperator(Operator::OVER);
$context->translate($cisize * 2.5, $cisize * 0.6);
drawCircles($context, $cisize);
$context->setSourceRgb(1, 0, 0);
$context->setOperator(Operator::ADD);
$context->translate(0, $cisize * 2);
drawCircles($context, $cisize);

$surface->writeToPng(dirname(__FILE__).'/finer-grained-fallbacks-php.png');