/**
* Create a new awimage
*/
function create()
{
if ($this->resource === NULL) {
// Create image
$this->resource = imagecreatetruecolor($this->width, $this->height);
if (!$this->resource) {
trigger_error("Unable to create a graph", E_USER_ERROR);
}
imagealphablending($this->resource, TRUE);
if ($this->antiAliasing and function_exists('imageantialias')) {
imageantialias($this->resource, TRUE);
}
$this->drawer = new awDrawer($this->resource);
$this->drawer->setImageSize($this->width, $this->height);
// Original color
$this->drawer->filledRectangle(new awWhite(), new awLine(new awPoint(0, 0), new awPoint($this->width, $this->height)));
$shadow = $this->shadow->getSpace();
$p1 = new awPoint($shadow->left, $shadow->top);
$p2 = new awPoint($this->width - $shadow->right - 1, $this->height - $shadow->bottom - 1);
// Draw image background
$this->drawer->filledRectangle($this->background, new awLine($p1, $p2));
$this->background->free();
// Draw image border
$this->border->rectangle($this->drawer, $p1, $p2);
}
}
function polygonLinearGradient(&$gradient, &$polygon) {
$count = $polygon->count();
if($count >= 3) {
$left = $polygon->get(0);
$right = $polygon->get($count - 1);
if($gradient->angle === 0) {
// Get polygon maximum and minimum
$offset = $polygon->get(0);
$max = $min = $offset->y;
for($i = 1; $i < $count - 1; $i++) {
$offset = $polygon->get($i);
$max = max($max, $offset->y);
$min = min($min, $offset->y);
}
$this->init($gradient, $max - $min);
$prev = $polygon->get(1);
$sum = 0;
for($i = 2; $i < $count - 1; $i++) {
$current = $polygon->get($i);
$interval = 1;
if($i !== $count - 2) {
$current->x -= $interval;
}
if($current->x - $prev->x > 0) {
// Draw rectangle
$x1 = $prev->x;
$x2 = $current->x;
$y1 = max($prev->y, $current->y);
$y2 = $left->y;
$gradient = new awLinearGradient(
$this->color($max - $min - ($y2 - $y1)),
$this->color($max - $min),
0
);
if($y1 > $y2) {
$y2 = $y1;
}
$this->drawer->filledRectangle(
$gradient,
awLine::build($x1, $y1, $x2, $y2)
);
$top = ($prev->y < $current->y) ? $current : $prev;
$bottom = ($prev->y >= $current->y) ? $current : $prev;
$gradient = new awLinearGradient(
$this->color($bottom->y - $min),
$this->color($max - $min - ($y2 - $y1)),
0
);
$gradientDrawer = new awGradientDrawer($this->drawer);
$gradientDrawer->drawFilledFlatTriangle(
$gradient,
new awPoint($prev->x, min($prev->y, $current->y)),
$top,
new awPoint($current->x, min($prev->y, $current->y))
);
unset($gradientDrawer);
$sum += $current->x - $prev->x;
}
$prev = $current;
$prev->x += $interval;
}
} else if($gradient->angle === 90) {
$width = $right->x - $left->x;
$this->init($gradient, $width);
$pos = 1;
$next = $polygon->get($pos++);
$this->next($polygon, $pos, $prev, $next);
for($i = 0; $i <= $width; $i++) {
$x = $left->x + $i;
$y1 = round($prev->y + ($next->y - $prev->y) * (($i + $left->x - $prev->x) / ($next->x - $prev->x)));
$y2 = $left->y;
// Draw line
$color = $this->color($i);
// YaPB : PHP does not handle alpha on lines
$this->drawer->filledRectangle($color, awLine::build($x, $y1, $x, $y2));
$color->free();
unset($color);
// Jump to next point
if($next->x == $i + $left->x) {
$this->next($polygon, $pos, $prev, $next);
}
}
}
}
}
protected function drawSquare(awPoint $point)
{
list($x, $y) = $point->getLocation();
$x1 = (int) ($x - $this->size / 2);
$x2 = $x1 + $this->size;
$y1 = (int) ($y - $this->size / 2);
$y2 = $y1 + $this->size;
$this->border->rectangle($this->drawer, new awPoint($x1, $y1), new awPoint($x2, $y2));
$size = $this->border->visible() ? 1 : 0;
$this->drawer->filledRectangle($this->fill, new awLine(new awPoint($x1 + $size, $y1 + $size), new awPoint($x2 - $size, $y2 - $size)));
}
