/**
* 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);
}
}
/**
* Draw grids
*
* @param $drawer A drawer object
* @param int $x1
* @param int $y1
* @param int $x2
* @param int $y2
*/
function draw($drawer, $x1, $y1, $x2, $y2)
{
if (is_a($this->background, 'awColor')) {
// Draw background color
$drawer->filledRectangle($this->background, awLine::build($x1, $y1, $x2, $y2));
$this->background->free();
}
if ($this->hide === FALSE) {
$this->drawGrid($drawer, $this->color, $this->hideVertical ? array() : $this->xgrid, $this->hideHorizontal ? array() : $this->ygrid, $x1, $y1, $x2, $y2, $this->type, $this->space, $this->interval[0], $this->interval[1]);
}
$this->color->free();
}
public function drawComponent(awDrawer $drawer, $x1, $y1, $x2, $y2, $aliasing)
{
$count = count($this->datay);
// Get start and stop values
list($start, $stop) = $this->getLimit();
// Build the polygon
$polygon = new awPolygon();
for ($key = 0; $key < $count; $key++) {
$x = $this->datax[$key];
$y = $this->datay[$key];
if ($y !== NULL) {
$p = awAxis::toPosition($this->xAxis, $this->yAxis, new awPoint($x, $y));
$polygon->set($key, $p);
} else {
if ($this->linkNull === FALSE) {
$polygon->set($key, NULL);
}
}
}
// Link points if needed
if ($this->link) {
$prev = NULL;
foreach ($polygon->all() as $point) {
if ($prev !== NULL and $point !== NULL) {
$drawer->line($this->lineColor, new awLine($prev, $point, $this->lineStyle, $this->lineThickness));
}
$prev = $point;
}
$this->lineColor->free();
}
// Draw impulses
if ($this->impulse instanceof awColor) {
foreach ($polygon->all() as $key => $point) {
if ($point !== NULL) {
$zero = awAxis::toPosition($this->xAxis, $this->yAxis, new awPoint($key, 0));
$drawer->line($this->impulse, new awLine($zero, $point, awLine::SOLID, 1));
}
}
}
// Draw marks and labels
foreach ($polygon->all() as $key => $point) {
$this->mark->draw($drawer, $point);
$this->label->draw($drawer, $point, $key);
}
}
/**
* Free memory used by the colors of the gradient
*/
public function free()
{
$this->from->free();
$this->to->free();
}
function drawComponent($drawer, $x1, $y1, $x2, $y2, $aliasing)
{
if ($this->lineMode === LINEPLOT_MIDDLE) {
$inc = $this->xAxis->getDistance(0, 1) / 2;
} else {
$inc = 0;
}
$p1 = awAxis::toPosition($this->xAxis, $this->yAxis, new awPoint($this->lineStart, $this->lineValue));
$p2 = awAxis::toPosition($this->xAxis, $this->yAxis, new awPoint($this->lineStop, $this->lineValue));
$drawer->line($this->lineColor, new awLine($p1->move($inc, 0), $p2->move($inc, 0), $this->lineStyle, $this->lineThickness));
$this->lineColor->free();
}
