/**
* @access public
* @static
* @author Laurent Laville <*****@*****.**>
*/
function color2RGB($color)
{
$c = array();
if ($color[0] == '#') {
$c = Image_Color::hex2rgb($color);
} else {
$c = Image_Color::namedColor2RGB($color);
}
return $c;
}
/**
* Convert any color-representation into an array of 4 ints (RGBA).
*
* Userdefined color specifications get translated into
* an array of rgb values.
*
* @param mixed $color Any color representation supported by Image_Canvas_Color::color2RGB()
*
* @return array Array of 4 ints (RGBA-representation)
* @access public
* @static
*/
function color2RGB($color)
{
if (is_array($color)) {
if (!is_numeric($color[0])) {
return null;
// error
}
if (count($color) == 3) {
// assume RGB-color
// 255 = alpha-value; full opaque
return array((int) $color[0], (int) $color[1], (int) $color[2], 255);
}
if (count($color) == 4) {
// assume RGBA-color
// 255 = alpha-value; full opaque
return array((int) $color[0], (int) $color[1], (int) $color[2], (int) $color[3]);
}
return null;
// error
} elseif (is_string($color)) {
$alphaPos = strpos($color, '@');
if ($alphaPos === false) {
$alpha = 255;
} else {
$alphaFloat = (double) substr($color, $alphaPos + 1);
// restrict to range 0..1
$alphaFloat = max(min($alphaFloat, 1), 0);
$alpha = (int) round((double) 255 * $alphaFloat);
$color = substr($color, 0, $alphaPos);
}
if ($color[0] == '#') {
// hex-color given, e.g. #FFB4B4
$tempColor = parent::hex2rgb($color);
return array((int) $tempColor[0], (int) $tempColor[1], (int) $tempColor[2], $alpha);
}
if (strpos($color, '%') !== false) {
$tempColor = parent::percentageColor2RGB($color);
return array((int) $tempColor[0], (int) $tempColor[1], (int) $tempColor[2], $alpha);
} else {
$tempColor = parent::namedColor2RGB($color);
return array((int) $tempColor[0], (int) $tempColor[1], (int) $tempColor[2], $alpha);
}
} else {
return null;
// error
}
}
/**
* Draws a clipped line from ($x1, $y1) to ($x2, $y2)
* using $color.
*
* @param float $x1
* @param float $y1
* @param float $x2
* @param float $y2
* @param mixed $color
* @access public
*/
function drawClippedLine($x1, $y1, $x2, $y2, $color)
{
if (($x1 > $this->max['x'] || $x1 < $this->min['x'] || $y1 > $this->max['y'] || $y1 < $this->min['y']) && ($x2 > $this->max['x'] || $x2 < $this->min['x'] || $y2 > $this->max['y'] || $y2 < $this->min['y'])) {
if ($this->debug) {
printf('clipped x1: %d %d %d<br />', $x1, $this->min['x'], $this->max['x']);
printf('clipped y1: %d %d %d<br />', $y1, $this->min['y'], $this->max['y']);
printf('clipped x2: %d %d %d<br />', $x2, $this->min['x'], $this->max['x']);
printf('clipped y2: %d %d %d<br />', $y2, $this->min['y'], $this->max['y']);
}
} else {
if (!is_array($color)) {
$color = Image_Color::namedColor2RGB($color);
}
$x1 = $this->polar2image($x1, 'x');
$y1 = $this->polar2image($y1, 'y');
$x2 = $this->polar2image($x2, 'x');
$y2 = $this->polar2image($y2, 'y');
if ($this->debug) {
printf('Drawing line (%s, %s) -> (%s, %s)<br />', $x1, $y1, $x2, $y2);
}
$this->drawLine($x1, $y1, $x2, $y2, $color[0], $color[1], $color[2]);
}
}
function testNamedColor2RGB_InvalidReturnsBlack()
{
$result = Image_Color::namedColor2RGB('NOT A REAL COLOR');
$this->assertEquals(array(0, 0, 0), $result);
}
