/**
* Render Axis labels
*
* Render labels for an axis.
*
* @param ezcGraphRenderer $renderer Renderer used to draw the chart
* @param ezcGraphBoundings $boundings Boundings of the axis
* @param ezcGraphCoordinate $start Axis starting point
* @param ezcGraphCoordinate $end Axis ending point
* @param ezcGraphChartElementAxis $axis Axis instance
* @return void
*/
public function renderLabels(ezcGraphRenderer $renderer, ezcGraphBoundings $boundings, ezcGraphCoordinate $start, ezcGraphCoordinate $end, ezcGraphChartElementAxis $axis)
{
// receive rendering parameters from axis
$steps = $axis->getSteps();
$this->steps = $steps;
$axisBoundings = new ezcGraphBoundings($start->x, $start->y, $end->x, $end->y);
// Determine normalized axis direction
$this->direction = new ezcGraphVector($start->x - $end->x, $start->y - $end->y);
$this->direction->unify();
if ($this->outerGrid) {
$gridBoundings = $boundings;
} else {
$gridBoundings = new ezcGraphBoundings($boundings->x0 + $renderer->xAxisSpace * abs($this->direction->y), $boundings->y0 + $renderer->yAxisSpace * abs($this->direction->x), $boundings->x1 - $renderer->xAxisSpace * abs($this->direction->y), $boundings->y1 - $renderer->yAxisSpace * abs($this->direction->x));
}
// Determine additional required axis space by boxes
$firstStep = reset($steps);
$lastStep = end($steps);
$this->widthModifier = 1 + $firstStep->width / 2 + $lastStep->width / 2;
// Draw steps and grid
foreach ($steps as $nr => $step) {
$position = new ezcGraphCoordinate($start->x + ($end->x - $start->x) * ($step->position + $step->width) / $this->widthModifier, $start->y + ($end->y - $start->y) * ($step->position + $step->width) / $this->widthModifier);
$stepWidth = $step->width / $this->widthModifier;
$stepSize = new ezcGraphCoordinate($axisBoundings->width * $stepWidth, $axisBoundings->height * $stepWidth);
if ($this->showLabels) {
// Calculate label boundings
switch (true) {
case abs($this->direction->x) > abs($this->direction->y) && $this->direction->x <= 0:
$labelBoundings = new ezcGraphBoundings($position->x - $stepSize->x + $this->labelPadding, $position->y + $this->labelPadding, $position->x - $this->labelPadding, $position->y + $renderer->yAxisSpace - $this->labelPadding);
$alignement = ezcGraph::CENTER | ezcGraph::TOP;
break;
case abs($this->direction->x) > abs($this->direction->y) && $this->direction->x > 0:
$labelBoundings = new ezcGraphBoundings($position->x + $this->labelPadding, $position->y + $this->labelPadding, $position->x + $stepSize->x - $this->labelPadding, $position->y + $renderer->yAxisSpace - $this->labelPadding);
$alignement = ezcGraph::CENTER | ezcGraph::TOP;
break;
case $this->direction->y <= 0:
$labelBoundings = new ezcGraphBoundings($position->x - $renderer->xAxisSpace + $this->labelPadding, $position->y - $stepSize->y + $this->labelPadding, $position->x - $this->labelPadding, $position->y - $this->labelPadding);
$alignement = ezcGraph::MIDDLE | ezcGraph::RIGHT;
break;
case $this->direction->y > 0:
$labelBoundings = new ezcGraphBoundings($position->x - $renderer->xAxisSpace + $this->labelPadding, $position->y + $this->labelPadding, $position->x - $this->labelPadding, $position->y + $stepSize->y - $this->labelPadding);
$alignement = ezcGraph::MIDDLE | ezcGraph::RIGHT;
break;
}
$renderer->drawText($labelBoundings, $step->label, $alignement);
}
// major grid
if ($axis->majorGrid) {
$this->drawGrid($renderer, $gridBoundings, $position, $stepSize, $axis->majorGrid);
}
// major step
$this->drawStep($renderer, $position, $this->direction, $axis->position, $this->majorStepSize, $axis->border);
}
}
/**
* Render Axis labels
*
* Render labels for an axis.
*
* @param ezcGraphRenderer $renderer Renderer used to draw the chart
* @param ezcGraphBoundings $boundings Boundings of the axis
* @param ezcGraphCoordinate $start Axis starting point
* @param ezcGraphCoordinate $end Axis ending point
* @param ezcGraphChartElementAxis $axis Axis instance
* @return void
*/
public function renderLabels(ezcGraphRenderer $renderer, ezcGraphBoundings $boundings, ezcGraphCoordinate $start, ezcGraphCoordinate $end, ezcGraphChartElementAxis $axis, ezcGraphBoundings $innerBoundings = null)
{
// receive rendering parameters from axis
$steps = $axis->getSteps();
$axisBoundings = new ezcGraphBoundings($start->x, $start->y, $end->x, $end->y);
// Determine normalized axis direction
$this->direction = new ezcGraphVector($end->x - $start->x, $end->y - $start->y);
$this->direction->unify();
// Get axis space
$gridBoundings = null;
list($xSpace, $ySpace) = $this->getAxisSpace($renderer, $boundings, $axis, $innerBoundings, $gridBoundings);
// Determine optimal angle if none specified
$this->determineAngle($steps, $xSpace, $ySpace, $axisBoundings);
$degTextAngle = $this->determineTextOffset($axis, $steps);
$labelLength = $this->calculateLabelLength($start, $end, $xSpace, $ySpace, $axisBoundings);
// Draw steps and grid
foreach ($steps as $nr => $step) {
$position = new ezcGraphCoordinate($start->x + ($end->x - $start->x) * $step->position * abs($this->direction->x), $start->y + ($end->y - $start->y) * $step->position * abs($this->direction->y));
$stepSize = new ezcGraphCoordinate(($end->x - $start->x) * $step->width, ($end->y - $start->y) * $step->width);
// Calculate label boundings
$labelSize = $this->calculateLabelSize($steps, $nr, $step, $xSpace, $ySpace, $axisBoundings);
$lengthReducement = min(abs(tan(deg2rad($this->angle)) * ($labelSize / 2)), abs($labelLength / 2));
$this->renderLabelText($renderer, $axis, $position, $step->label, $degTextAngle, $labelLength, $labelSize, $lengthReducement);
// Major grid
if ($axis->majorGrid) {
$this->drawGrid($renderer, $gridBoundings, $position, $stepSize, $axis->majorGrid);
}
// Major step
$this->drawStep($renderer, $position, $this->direction, $axis->position, $this->majorStepSize, $axis->border);
}
}
/**
* Returns the angle between two vectors in radian
*
* @param ezcGraphCoordinate $vector
* @return float
*/
public function angle(ezcGraphCoordinate $vector)
{
if (!$vector instanceof ezcGraphVector) {
// Ensure beeing a vector for calling length()
$vector = ezcGraphVector::fromCoordinate($vector);
}
$factor = $this->length() * $vector->length();
if ($factor == 0) {
return false;
} else {
return acos($this->mul($vector) / $factor);
}
}
/**
* Draw axis
*
* Draws an axis form the provided start point to the end point. A specific
* angle of the axis is not required.
*
* For the labeleing of the axis a sorted array with major steps and an
* array with minor steps is expected, which are build like this:
* array(
* array(
* 'position' => (float),
* 'label' => (string),
* )
* )
* where the label is optional.
*
* The label renderer class defines how the labels are rendered. For more
* documentation on this topic have a look at the basic label renderer
* class.
*
* Additionally it can be specified if a major and minor grid are rendered
* by defining a color for them. The axis label is used to add a caption
* for the axis.
*
* @param ezcGraphBoundings $boundings Boundings of axis
* @param ezcGraphCoordinate $start Start point of axis
* @param ezcGraphCoordinate $end Endpoint of axis
* @param ezcGraphChartElementAxis $axis Axis to render
* @param ezcGraphAxisLabelRenderer $labelClass Used label renderer
* @return void
*/
public function drawAxis(ezcGraphBoundings $boundings, ezcGraphCoordinate $start, ezcGraphCoordinate $end, ezcGraphChartElementAxis $axis, ezcGraphAxisLabelRenderer $labelClass = null)
{
// Calculate used space for three dimensional effects
if ($this->depth === false) {
$this->depth = min(($boundings->x1 - $boundings->x0) * $this->options->depth, ($boundings->y1 - $boundings->y0) * $this->options->depth);
$this->xDepthFactor = 1 - $this->depth / ($boundings->x1 - $boundings->x0);
$this->yDepthFactor = 1 - $this->depth / ($boundings->y1 - $boundings->y0);
$this->dataBoundings = clone $boundings;
}
// Clone boundings to not be affected by internal mofifications
$boundings = clone $boundings;
switch ($axis->position) {
case ezcGraph::TOP:
case ezcGraph::BOTTOM:
$this->xAxisSpace = ($this->dataBoundings->x1 - $this->dataBoundings->x0) * $axis->axisSpace;
break;
case ezcGraph::LEFT:
case ezcGraph::RIGHT:
$this->yAxisSpace = ($this->dataBoundings->y1 - $this->dataBoundings->y0) * $axis->axisSpace;
break;
}
// Determine normalized direction
$direction = new ezcGraphVector($start->x - $end->x, $start->y - $end->y);
$direction->unify();
$start->x += $boundings->x0;
$start->y += $boundings->y0;
$end->x += $boundings->x0;
$end->y += $boundings->y0;
// Shorten drawn axis, if requested.
if ($this->options->shortAxis === true && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM)) {
$axisStart = clone $start;
$axisEnd = clone $end;
$axisStart->y += $boundings->height * $axis->axisSpace * ($axis->position === ezcGraph::TOP ? 1 : -1);
$axisEnd->y -= $boundings->height * $axis->axisSpace * ($axis->position === ezcGraph::TOP ? 1 : -1);
} elseif ($this->options->shortAxis === true && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT)) {
$axisStart = clone $start;
$axisEnd = clone $end;
$axisStart->x += $boundings->width * $axis->axisSpace * ($axis->position === ezcGraph::LEFT ? 1 : -1);
$axisEnd->x -= $boundings->width * $axis->axisSpace * ($axis->position === ezcGraph::LEFT ? 1 : -1);
} else {
$axisStart = $start;
$axisEnd = $end;
}
$axisPolygonCoordinates = array($this->get3dCoordinate($axisStart, true), $this->get3dCoordinate($axisEnd, true), $this->get3dCoordinate($axisEnd, false), $this->get3dCoordinate($axisStart, false));
// Draw axis
if ($this->options->fillAxis > 0 && $this->options->fillAxis < 1) {
$this->driver->drawPolygon($axisPolygonCoordinates, $axis->border->transparent($this->options->fillAxis), true);
} else {
$this->driver->drawPolygon($axisPolygonCoordinates, $axis->border, !(bool) $this->options->fillAxis);
}
// Draw axis lines - scedule some for later to be drawn in front of
// the data
$this->driver->drawLine($axisPolygonCoordinates[0], $axisPolygonCoordinates[1], $axis->border, 1);
$this->frontLines[] = array($axisPolygonCoordinates[1], $axisPolygonCoordinates[2], $axis->border, 1);
$this->frontLines[] = array($axisPolygonCoordinates[2], $axisPolygonCoordinates[3], $axis->border, 1);
$this->frontLines[] = array($axisPolygonCoordinates[3], $axisPolygonCoordinates[0], $axis->border, 1);
// Draw small arrowhead
$this->drawAxisArrowHead($axisPolygonCoordinates[1], $direction, max($axis->minArrowHeadSize, min($axis->maxArrowHeadSize, abs(ceil(($end->x - $start->x + ($end->y - $start->y)) * $axis->axisSpace / 4)))), $axis->border);
// Draw axis label
if ($axis->label !== false) {
$width = $this->dataBoundings->x1 - $this->dataBoundings->x0;
switch ($axis->position) {
case ezcGraph::TOP:
$this->driver->drawTextBox($axis->label, new ezcGraphCoordinate($axisPolygonCoordinates[2]->x + $axis->labelMargin - $width * (1 - $axis->axisSpace * 2), $axisPolygonCoordinates[2]->y - $axis->labelMargin - $axis->labelSize), $width * (1 - $axis->axisSpace * 2) - $axis->labelMargin, $axis->labelSize, ezcGraph::TOP | ezcGraph::RIGHT);
break;
case ezcGraph::BOTTOM:
$this->driver->drawTextBox($axis->label, new ezcGraphCoordinate($axisPolygonCoordinates[1]->x + $axis->labelMargin, $axisPolygonCoordinates[1]->y + $axis->labelMargin), $width * (1 - $axis->axisSpace * 2) - $axis->labelMargin, $axis->labelSize, ezcGraph::TOP | ezcGraph::LEFT);
break;
case ezcGraph::LEFT:
$this->driver->drawTextBox($axis->label, new ezcGraphCoordinate($axisPolygonCoordinates[1]->x - $width, $axisPolygonCoordinates[1]->y - $axis->labelSize - $axis->labelMargin), $width - $axis->labelMargin, $axis->labelSize, ezcGraph::BOTTOM | ezcGraph::RIGHT);
break;
case ezcGraph::RIGHT:
$this->driver->drawTextBox($axis->label, new ezcGraphCoordinate($axisPolygonCoordinates[1]->x, $axisPolygonCoordinates[1]->y - $axis->labelSize - $axis->labelMargin), $width - $axis->labelMargin, $axis->labelSize, ezcGraph::BOTTOM | ezcGraph::LEFT);
break;
}
}
// Collect axis labels and draw, when all axisSpaces are collected
$this->axisLabels[] = array('object' => $labelClass, 'boundings' => $boundings, 'start' => clone $start, 'end' => clone $end, 'axis' => $axis);
if ($this->xAxisSpace && $this->yAxisSpace) {
foreach ($this->axisLabels as $axisLabel) {
// If font should not be synchronized, use font configuration from
// each axis
if ($this->options->syncAxisFonts === false) {
$this->driver->options->font = $axisLabel['axis']->font;
}
switch ($axisLabel['axis']->position) {
case ezcGraph::RIGHT:
case ezcGraph::LEFT:
$axisLabel['start']->x += $this->xAxisSpace * ($axisLabel['start'] > $axisLabel['end'] ? -1 : 1);
$axisLabel['end']->x -= $this->xAxisSpace * ($axisLabel['start'] > $axisLabel['end'] ? -1 : 1);
break;
case ezcGraph::TOP:
case ezcGraph::BOTTOM:
$axisLabel['start']->y += $this->yAxisSpace * ($axisLabel['start'] > $axisLabel['end'] ? -1 : 1);
$axisLabel['end']->y -= $this->yAxisSpace * ($axisLabel['start'] > $axisLabel['end'] ? -1 : 1);
break;
}
$axisLabel['object']->renderLabels($this, $axisLabel['boundings'], $axisLabel['start'], $axisLabel['end'], $axisLabel['axis']);
}
}
}
/**
* Render Axis labels
*
* Render labels for an axis.
*
* @param ezcGraphRenderer $renderer Renderer used to draw the chart
* @param ezcGraphBoundings $boundings Boundings of the axis
* @param ezcGraphCoordinate $start Axis starting point
* @param ezcGraphCoordinate $end Axis ending point
* @param ezcGraphChartElementAxis $axis Axis instance
* @return void
*/
public function renderLabels(ezcGraphRenderer $renderer, ezcGraphBoundings $boundings, ezcGraphCoordinate $start, ezcGraphCoordinate $end, ezcGraphChartElementAxis $axis, ezcGraphBoundings $innerBoundings = null)
{
// receive rendering parameters from axis
$steps = $axis->getSteps();
$axisBoundings = new ezcGraphBoundings($start->x, $start->y, $end->x, $end->y);
// Determine normalized axis direction
$direction = new ezcGraphVector($end->x - $start->x, $end->y - $start->y);
$direction->unify();
// Get axis space
$gridBoundings = null;
list($xSpace, $ySpace) = $this->getAxisSpace($renderer, $boundings, $axis, $innerBoundings, $gridBoundings);
// Draw steps and grid
foreach ($steps as $nr => $step) {
$position = new ezcGraphCoordinate($start->x + ($end->x - $start->x) * $step->position, $start->y + ($end->y - $start->y) * $step->position);
$stepSize = new ezcGraphCoordinate($axisBoundings->width * $step->width, $axisBoundings->height * $step->width);
if (!$step->isZero) {
// major grid
if ($axis->majorGrid) {
$this->drawGrid($renderer, $gridBoundings, $position, $stepSize, $axis->majorGrid);
}
// major step
$this->drawStep($renderer, $position, $direction, $axis->position, $this->majorStepSize, $axis->border);
}
// draw label
if ($this->showLabels && ($this->showZeroValue || !$step->isZero)) {
// Calculate label boundings
if (abs($direction->x) > abs($direction->y)) {
// Horizontal labels
switch (true) {
case $nr === 0:
// First label
$labelSize = min($xSpace * 2, $step->width * $axisBoundings->width);
break;
case $step->isLast:
// Last label
$labelSize = min($xSpace * 2, $steps[$nr - 1]->width * $axisBoundings->width);
break;
default:
$labelSize = min($step->width * $axisBoundings->width, $steps[$nr - 1]->width * $axisBoundings->width);
break;
}
$labelBoundings = new ezcGraphBoundings($position->x - $labelSize / 2 + $this->labelPadding, $position->y + $this->labelPadding, $position->x + $labelSize / 2 - $this->labelPadding, $position->y + $ySpace - $this->labelPadding);
$alignement = ezcGraph::CENTER | ezcGraph::TOP;
} else {
// Vertical labels
switch (true) {
case $nr === 0:
// First label
$labelSize = min($ySpace * 2, $step->width * $axisBoundings->height);
break;
case $step->isLast:
// Last label
$labelSize = min($ySpace * 2, $steps[$nr - 1]->width * $axisBoundings->height);
break;
default:
$labelSize = min($step->width * $axisBoundings->height, $steps[$nr - 1]->width * $axisBoundings->height);
break;
}
$labelBoundings = new ezcGraphBoundings($position->x - $xSpace + $this->labelPadding, $position->y - $labelSize / 2 + $this->labelPadding, $position->x - $this->labelPadding, $position->y + $labelSize / 2 - $this->labelPadding);
$alignement = ezcGraph::MIDDLE | ezcGraph::RIGHT;
}
$renderer->drawText($labelBoundings, $step->label, $alignement);
}
// Iterate over minor steps
if (!$step->isLast) {
foreach ($step->childs as $minorStep) {
$minorStepPosition = new ezcGraphCoordinate($start->x + ($end->x - $start->x) * $minorStep->position, $start->y + ($end->y - $start->y) * $minorStep->position);
$minorStepSize = new ezcGraphCoordinate($axisBoundings->width * $minorStep->width, $axisBoundings->height * $minorStep->width);
if ($axis->minorGrid) {
$this->drawGrid($renderer, $gridBoundings, $minorStepPosition, $minorStepSize, $axis->minorGrid);
}
// major step
$this->drawStep($renderer, $minorStepPosition, $direction, $axis->position, $this->minorStepSize, $axis->border);
}
}
}
}
/**
* Render Axis labels
*
* Render labels for an axis.
*
* @param ezcGraphRenderer $renderer Renderer used to draw the chart
* @param ezcGraphBoundings $boundings Boundings of the axis
* @param ezcGraphCoordinate $start Axis starting point
* @param ezcGraphCoordinate $end Axis ending point
* @param ezcGraphChartElementAxis $axis Axis instance
* @return void
*/
public function renderLabels(ezcGraphRenderer $renderer, ezcGraphBoundings $boundings, ezcGraphCoordinate $start, ezcGraphCoordinate $end, ezcGraphChartElementAxis $axis, ezcGraphBoundings $innerBoundings = null)
{
// receive rendering parameters from axis
$steps = $axis->getSteps();
$axisBoundings = new ezcGraphBoundings($start->x, $start->y, $end->x, $end->y);
// Determine normalized axis direction
$direction = new ezcGraphVector($end->x - $start->x, $end->y - $start->y);
$direction->unify();
// Get axis space
$gridBoundings = null;
list($xSpace, $ySpace) = $this->getAxisSpace($renderer, $boundings, $axis, $innerBoundings, $gridBoundings);
// Draw steps and grid
foreach ($steps as $nr => $step) {
$position = new ezcGraphCoordinate($start->x + ($end->x - $start->x) * $step->position, $start->y + ($end->y - $start->y) * $step->position);
$stepSize = new ezcGraphCoordinate($axisBoundings->width * $step->width, $axisBoundings->height * $step->width);
if (!$step->isZero) {
// major grid
if ($axis->majorGrid) {
$this->drawGrid($renderer, $gridBoundings, $position, $stepSize, $axis->majorGrid);
}
// major step
$this->drawStep($renderer, $position, $direction, $axis->position, $this->majorStepSize, $axis->border);
}
if ($this->showLabels) {
switch ($axis->position) {
case ezcGraph::RIGHT:
case ezcGraph::LEFT:
$labelWidth = $axisBoundings->width * $steps[$nr - $step->isLast]->width / ($this->showLastValue + 1);
$labelHeight = $ySpace;
if ($this->renderLastOutside === true && $step->isLast === true) {
$labelWidth = ($boundings->width - $axisBoundings->width) / 2;
}
break;
case ezcGraph::BOTTOM:
case ezcGraph::TOP:
$labelWidth = $xSpace;
$labelHeight = $axisBoundings->height * $steps[$nr - $step->isLast]->width / ($this->showLastValue + 1);
if ($this->renderLastOutside === true && $step->isLast === true) {
$labelHeight = ($boundings->height - $axisBoundings->height) / 2;
}
break;
}
$showLabel = true;
switch (true) {
case !$this->showLastValue && $step->isLast:
// Skip last step if showLastValue is false
$showLabel = false;
break;
// Draw label at top left of step
// Draw label at top left of step
case $axis->position === ezcGraph::BOTTOM && !$step->isLast || $axis->position === ezcGraph::BOTTOM && $step->isLast && $this->renderLastOutside || $axis->position === ezcGraph::TOP && $step->isLast && !$this->renderLastOutside:
$labelBoundings = new ezcGraphBoundings($position->x - $labelWidth + $this->labelPadding, $position->y - $labelHeight + $this->labelPadding, $position->x - $this->labelPadding, $position->y - $this->labelPadding);
$alignement = ezcGraph::RIGHT | ezcGraph::BOTTOM;
break;
// Draw label at bottom right of step
// Draw label at bottom right of step
case $axis->position === ezcGraph::LEFT && !$step->isLast || $axis->position === ezcGraph::LEFT && $step->isLast && $this->renderLastOutside || $axis->position === ezcGraph::RIGHT && $step->isLast && !$this->renderLastOutside:
$labelBoundings = new ezcGraphBoundings($position->x + $this->labelPadding, $position->y + $this->labelPadding, $position->x + $labelWidth - $this->labelPadding, $position->y + $labelHeight - $this->labelPadding);
$alignement = ezcGraph::LEFT | ezcGraph::TOP;
break;
// Draw label at bottom left of step
// Draw label at bottom left of step
case $axis->position === ezcGraph::TOP && !$step->isLast || $axis->position === ezcGraph::TOP && $step->isLast && $this->renderLastOutside || $axis->position === ezcGraph::RIGHT && !$step->isLast || $axis->position === ezcGraph::RIGHT && $step->isLast && $this->renderLastOutside || $axis->position === ezcGraph::BOTTOM && $step->isLast && !$this->renderLastOutside || $axis->position === ezcGraph::LEFT && $step->isLast && !$this->renderLastOutside:
$labelBoundings = new ezcGraphBoundings($position->x - $labelWidth + $this->labelPadding, $position->y + $this->labelPadding, $position->x - $this->labelPadding, $position->y + $labelHeight - $this->labelPadding);
$alignement = ezcGraph::RIGHT | ezcGraph::TOP;
break;
}
if ($showLabel) {
$renderer->drawText($labelBoundings, $step->label, $alignement);
}
}
if (!$step->isLast) {
// Iterate over minor steps
foreach ($step->childs as $minorStep) {
$minorStepPosition = new ezcGraphCoordinate($start->x + ($end->x - $start->x) * $minorStep->position, $start->y + ($end->y - $start->y) * $minorStep->position);
$minorStepSize = new ezcGraphCoordinate($axisBoundings->width * $minorStep->width, $axisBoundings->height * $minorStep->width);
if ($axis->minorGrid) {
$this->drawGrid($renderer, $gridBoundings, $minorStepPosition, $minorStepSize, $axis->minorGrid);
}
// major step
$this->drawStep($renderer, $minorStepPosition, $direction, $axis->position, $this->minorStepSize, $axis->border);
}
}
}
}
/**
* Draw all left axis labels
*
* @return void
*/
protected function drawAxisLabels()
{
foreach ($this->axisLabels as $nr => $axisLabel) {
// If font should not be synchronized, use font configuration from
// each axis
if ($this->options->syncAxisFonts === false) {
$this->driver->options->font = $axisLabel['axis']->font;
}
$start = $axisLabel['start'];
$end = $axisLabel['end'];
$direction = new ezcGraphVector($end->x - $start->x, $end->y - $start->y);
$direction->unify();
// Convert elipse to circle for correct angle calculation
$direction->y *= $this->xAxisSpace / $this->yAxisSpace;
$angle = $direction->angle(new ezcGraphVector(0, 1));
$movement = new ezcGraphVector(sin($angle) * $this->xAxisSpace * ($direction->x < 0 ? -1 : 1), cos($angle) * $this->yAxisSpace);
$start->x += $movement->x;
$start->y += $movement->y;
$end->x -= $movement->x;
$end->y -= $movement->y;
$axisLabel['object']->renderLabels($this, $axisLabel['boundings'], $start, $end, $axisLabel['axis']);
// Prevent from redrawing axis on more then 2 axis.
unset($this->axisLabels[$nr]);
}
}
/**
* Reduce the size of an ellipse
*
* The method returns a the edgepoints and angles for an ellipse where all
* borders are moved to the inner side of the ellipse by the give $size
* value.
*
* The method returns an
* array (
* 'center' => (ezcGraphCoordinate) New center point,
* 'start' => (ezcGraphCoordinate) New outer start point,
* 'end' => (ezcGraphCoordinate) New outer end point,
* )
*
* @param ezcGraphCoordinate $center
* @param float $width
* @param float $height
* @param float $startAngle
* @param float $endAngle
* @param float $size
* @throws ezcGraphReducementFailedException
* @return array
*/
protected function reduceEllipseSize(ezcGraphCoordinate $center, $width, $height, $startAngle, $endAngle, $size)
{
$oldStartPoint = new ezcGraphVector($width * cos(deg2rad($startAngle)) / 2, $height * sin(deg2rad($startAngle)) / 2);
$oldEndPoint = new ezcGraphVector($width * cos(deg2rad($endAngle)) / 2, $height * sin(deg2rad($endAngle)) / 2);
// We always need radian values..
$degAngle = abs($endAngle - $startAngle);
$startAngle = deg2rad($startAngle);
$endAngle = deg2rad($endAngle);
// Calculate normalized vectors for the lines spanning the ellipse
$unifiedStartVector = ezcGraphVector::fromCoordinate($oldStartPoint)->unify();
$unifiedEndVector = ezcGraphVector::fromCoordinate($oldEndPoint)->unify();
$startVector = ezcGraphVector::fromCoordinate($oldStartPoint);
$endVector = ezcGraphVector::fromCoordinate($oldEndPoint);
$oldStartPoint->add($center);
$oldEndPoint->add($center);
// Use orthogonal vectors of normalized ellipse spanning vectors to
$v = clone $unifiedStartVector;
$v->rotateClockwise()->scalar($size);
// calculate new center point
// center + v + size / tan( angle / 2 ) * startVector
$centerMovement = clone $unifiedStartVector;
$newCenter = $v->add($centerMovement->scalar($size / tan(($endAngle - $startAngle) / 2)))->add($center);
// Test if center is still inside the ellipse, otherwise the sector
// was to small to be reduced
$innerBoundingBoxSize = 0.7 * min($width, $height);
if ($newCenter->x < $center->x + $innerBoundingBoxSize && $newCenter->x > $center->x - $innerBoundingBoxSize && $newCenter->y < $center->y + $innerBoundingBoxSize && $newCenter->y > $center->y - $innerBoundingBoxSize) {
// Point is in inner bounding box -> everything is OK
} elseif ($newCenter->x < $center->x - $width || $newCenter->x > $center->x + $width || $newCenter->y < $center->y - $height || $newCenter->y > $center->y + $height) {
// Quick outer boundings check
if ($degAngle > 180) {
// Use old center for very big angles
$newCenter = clone $center;
} else {
// Do not draw for very small angles
throw new ezcGraphReducementFailedException();
}
} else {
// Perform exact check
$distance = new ezcGraphVector($newCenter->x - $center->x, $newCenter->y - $center->y);
// Convert elipse to circle for correct angle calculation
$direction = clone $distance;
$direction->y *= $width / $height;
$angle = $direction->angle(new ezcGraphVector(0, 1));
$outerPoint = new ezcGraphVector(sin($angle) * $width / 2, cos($angle) * $height / 2);
// Point is not in ellipse any more
if (abs($distance->x) > abs($outerPoint->x)) {
if ($degAngle > 180) {
// Use old center for very big angles
$newCenter = clone $center;
} else {
// Do not draw for very small angles
throw new ezcGraphReducementFailedException();
}
}
}
// Use start spanning vector and its orthogonal vector to calculate
// new start point
$newStartPoint = clone $oldStartPoint;
// Create tangent vector from tangent angle
// Ellipse tangent factor
$ellipseTangentFactor = sqrt(pow($height, 2) * pow(cos($startAngle), 2) + pow($width, 2) * pow(sin($startAngle), 2));
$ellipseTangentVector = new ezcGraphVector($width * -sin($startAngle) / $ellipseTangentFactor, $height * cos($startAngle) / $ellipseTangentFactor);
// Reverse spanning vector
$innerVector = clone $unifiedStartVector;
$innerVector->scalar($size)->scalar(-1);
$newStartPoint->add($innerVector)->add($ellipseTangentVector->scalar($size));
$newStartVector = clone $startVector;
$newStartVector->add($ellipseTangentVector);
// Use end spanning vector and its orthogonal vector to calculate
// new end point
$newEndPoint = clone $oldEndPoint;
// Create tangent vector from tangent angle
// Ellipse tangent factor
$ellipseTangentFactor = sqrt(pow($height, 2) * pow(cos($endAngle), 2) + pow($width, 2) * pow(sin($endAngle), 2));
$ellipseTangentVector = new ezcGraphVector($width * -sin($endAngle) / $ellipseTangentFactor, $height * cos($endAngle) / $ellipseTangentFactor);
// Reverse spanning vector
$innerVector = clone $unifiedEndVector;
$innerVector->scalar($size)->scalar(-1);
$newEndPoint->add($innerVector)->add($ellipseTangentVector->scalar($size)->scalar(-1));
$newEndVector = clone $endVector;
$newEndVector->add($ellipseTangentVector);
return array('center' => $newCenter, 'start' => $newStartPoint, 'end' => $newEndPoint, 'startAngle' => rad2deg($startAngle + $startVector->angle($newStartVector)), 'endAngle' => rad2deg($endAngle - $endVector->angle($newEndVector)));
}
/**
* Draws a sector of cirlce
*
* @param ezcGraphCoordinate $center Center of circle
* @param mixed $width Width
* @param mixed $height Height
* @param mixed $startAngle Start angle of circle sector
* @param mixed $endAngle End angle of circle sector
* @param ezcGraphColor $color Color
* @param mixed $filled Filled
* @return void
*/
public function drawCircleSector(ezcGraphCoordinate $center, $width, $height, $startAngle, $endAngle, ezcGraphColor $color, $filled = true)
{
$image = $this->getImage();
$drawColor = $this->allocate($color);
// Normalize angles
if ($startAngle > $endAngle) {
$tmp = $startAngle;
$startAngle = $endAngle;
$endAngle = $tmp;
}
if ($endAngle - $startAngle > 359.99999) {
return $this->drawCircle($center, $width, $height, $color, $filled);
}
// Because of bug #45552 in PHPs ext/GD we check for a minimal distance
// on the outer border of the circle sector, and skip the drawing if
// the distance is lower then 1.
//
// See also: http://bugs.php.net/45552
$startPoint = new ezcGraphVector($center->x + cos(deg2rad($startAngle)) * $width / 2, $center->y + sin(deg2rad($startAngle)) * $height / 2);
if ($startPoint->sub(new ezcGraphVector($center->x + cos(deg2rad($endAngle)) * $width / 2, $center->y + sin(deg2rad($endAngle)) * $height / 2))->length() < 1) {
// Skip this circle sector
return array();
}
if ($filled) {
imagefilledarc($image, $this->supersample($center->x), $this->supersample($center->y), $this->supersample($width), $this->supersample($height), $startAngle, $endAngle, $drawColor, IMG_ARC_PIE);
} else {
imagefilledarc($image, $this->supersample($center->x), $this->supersample($center->y), $this->supersample($width), $this->supersample($height), $startAngle, $endAngle, $drawColor, IMG_ARC_PIE | IMG_ARC_NOFILL | IMG_ARC_EDGED);
}
// Create polygon array to return
$polygonArray = array($center);
for ($angle = $startAngle; $angle < $endAngle; $angle += $this->options->imageMapResolution) {
$polygonArray[] = new ezcGraphCoordinate($center->x + cos(deg2rad($angle)) * $width / 2, $center->y + sin(deg2rad($angle)) * $height / 2);
}
$polygonArray[] = new ezcGraphCoordinate($center->x + cos(deg2rad($endAngle)) * $width / 2, $center->y + sin(deg2rad($endAngle)) * $height / 2);
return $polygonArray;
}
/**
* Render Axis labels
*
* Render labels for an axis.
*
* @param ezcGraphRenderer $renderer Renderer used to draw the chart
* @param ezcGraphBoundings $boundings Boundings of the axis
* @param ezcGraphCoordinate $start Axis starting point
* @param ezcGraphCoordinate $end Axis ending point
* @param ezcGraphChartElementAxis $axis Axis instance
* @return void
*/
public function renderLabels(ezcGraphRenderer $renderer, ezcGraphBoundings $boundings, ezcGraphCoordinate $start, ezcGraphCoordinate $end, ezcGraphChartElementAxis $axis)
{
// receive rendering parameters from axis
$steps = $axis->getSteps();
$this->steps = $steps;
$axisBoundings = new ezcGraphBoundings($start->x, $start->y, $end->x, $end->y);
// Determine normalized axis direction
$this->direction = new ezcGraphVector($end->x - $start->x, $end->y - $start->y);
$this->direction->unify();
$axisAngle = -$this->direction->angle(new ezcGraphVector(1, 0));
if ($this->outerGrid) {
$gridBoundings = $boundings;
} else {
$gridBoundings = new ezcGraphBoundings($boundings->x0 + $renderer->xAxisSpace, $boundings->y0 + $renderer->yAxisSpace, $boundings->x1 - $renderer->xAxisSpace, $boundings->y1 - $renderer->yAxisSpace);
}
// Determine optimal angle if none specified
if ($this->angle === null) {
$minimumStepWidth = null;
foreach ($steps as $nr => $step) {
if ($minimumStepWidth === null || $step->width < $minimumStepWidth) {
$minimumStepWidth = $step->width;
}
}
$width = abs($axisBoundings->width * $minimumStepWidth * $this->direction->x + $axisBoundings->height * $minimumStepWidth * $this->direction->y);
$height = abs($renderer->yAxisSpace * $this->direction->x + $renderer->xAxisSpace * $this->direction->y);
$length = sqrt(pow($width, 2) + pow($height, 2));
$this->angle = rad2deg(acos($height / $length));
}
// Determine additional required axis space by boxes
$firstStep = reset($steps);
$lastStep = end($steps);
$textAngle = $axisAngle + deg2rad($this->angle) + ($axis->position & (ezcGraph::TOP | ezcGraph::BOTTOM) ? deg2rad(270) : deg2rad(90));
// Ensure angle between 0 and 360 degrees
$degTextAngle = rad2deg($textAngle);
while ($degTextAngle < 0) {
$degTextAngle += 360.0;
}
$this->offset = ($this->angle < 0 ? -1 : 1) * ($axis->position & (ezcGraph::TOP | ezcGraph::LEFT) ? 1 : -1) * (1 - cos(deg2rad($this->angle * 2)));
$axisSpaceFactor = abs(($this->direction->x == 0 ? 0 : $this->direction->x * $renderer->yAxisSpace / $axisBoundings->width) + ($this->direction->y == 0 ? 0 : $this->direction->y * $renderer->xAxisSpace / $axisBoundings->height));
$start = new ezcGraphCoordinate($start->x + max(0.0, $axisSpaceFactor * $this->offset) * ($end->x - $start->x), $start->y + max(0.0, $axisSpaceFactor * $this->offset) * ($end->y - $start->y));
$end = new ezcGraphCoordinate($end->x + min(0.0, $axisSpaceFactor * $this->offset) * ($end->x - $start->x), $end->y + min(0.0, $axisSpaceFactor * $this->offset) * ($end->y - $start->y));
$labelLength = sqrt(pow($renderer->xAxisSpace * $this->direction->y + $axisSpaceFactor * $this->offset * ($end->x - $start->x), 2) + pow($renderer->yAxisSpace * $this->direction->x + $axisSpaceFactor * $this->offset * ($end->y - $start->y), 2));
$this->offset *= $axisSpaceFactor;
// Draw steps and grid
foreach ($steps as $nr => $step) {
$position = new ezcGraphCoordinate($start->x + ($end->x - $start->x) * $step->position * abs($this->direction->x), $start->y + ($end->y - $start->y) * $step->position * abs($this->direction->y));
$stepSize = new ezcGraphCoordinate(($end->x - $start->x) * $step->width, ($end->y - $start->y) * $step->width);
// Calculate label boundings
switch (true) {
case $nr === 0:
$labelSize = min(abs($renderer->xAxisSpace * 2 * $this->direction->x + $renderer->yAxisSpace * 2 * $this->direction->y), abs($step->width * $axisBoundings->width * $this->direction->x + $step->width * $axisBoundings->height * $this->direction->y));
break;
case $step->isLast:
$labelSize = min(abs($renderer->xAxisSpace * 2 * $this->direction->x + $renderer->yAxisSpace * 2 * $this->direction->y), abs($steps[$nr - 1]->width * $axisBoundings->width * $this->direction->x + $steps[$nr - 1]->width * $axisBoundings->height * $this->direction->y));
break;
default:
$labelSize = min(abs($step->width * $axisBoundings->width * $this->direction->x + $step->width * $axisBoundings->height * $this->direction->y), abs($steps[$nr - 1]->width * $axisBoundings->width * $this->direction->x + $steps[$nr - 1]->width * $axisBoundings->height * $this->direction->y));
break;
}
$labelSize = $labelSize * cos(deg2rad($this->angle));
$lengthReducement = min(abs(tan(deg2rad($this->angle)) * ($labelSize / 2)), abs($labelLength / 2));
switch (true) {
case $degTextAngle >= 0 && $degTextAngle < 90 && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT) || $degTextAngle >= 270 && $degTextAngle < 360 && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM):
$labelBoundings = new ezcGraphBoundings($position->x, $position->y, $position->x + abs($labelLength) - $lengthReducement, $position->y + $labelSize);
$labelAlignement = ezcGraph::LEFT | ezcGraph::TOP;
$labelRotation = $degTextAngle;
break;
case $degTextAngle >= 90 && $degTextAngle < 180 && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT) || $degTextAngle >= 180 && $degTextAngle < 270 && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM):
$labelBoundings = new ezcGraphBoundings($position->x - abs($labelLength) + $lengthReducement, $position->y, $position->x, $position->y + $labelSize);
$labelAlignement = ezcGraph::RIGHT | ezcGraph::TOP;
$labelRotation = $degTextAngle - 180;
break;
case $degTextAngle >= 180 && $degTextAngle < 270 && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT) || $degTextAngle >= 90 && $degTextAngle < 180 && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM):
$labelBoundings = new ezcGraphBoundings($position->x - abs($labelLength) + $lengthReducement, $position->y - $labelSize, $position->x, $position->y);
$labelAlignement = ezcGraph::RIGHT | ezcGraph::BOTTOM;
$labelRotation = $degTextAngle - 180;
break;
case $degTextAngle >= 270 && $degTextAngle < 360 && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT) || $degTextAngle >= 0 && $degTextAngle < 90 && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM):
$labelBoundings = new ezcGraphBoundings($position->x, $position->y + $labelSize, $position->x + abs($labelLength) - $lengthReducement, $position->y);
$labelAlignement = ezcGraph::LEFT | ezcGraph::BOTTOM;
$labelRotation = $degTextAngle;
break;
}
$renderer->drawText($labelBoundings, $step->label, $labelAlignement, new ezcGraphRotation($labelRotation, $position));
// major grid
if ($axis->majorGrid) {
$this->drawGrid($renderer, $gridBoundings, $position, $stepSize, $axis->majorGrid);
}
// major step
$this->drawStep($renderer, $position, $this->direction, $axis->position, $this->majorStepSize, $axis->border);
}
}
/**
* Draw grid
*
* Draws a grid line at the current position
*
* @param ezcGraphRenderer $renderer Renderer to draw the grid with
* @param ezcGraphBoundings $boundings Boundings of axis
* @param ezcGraphCoordinate $position Position of step
* @param ezcGraphCoordinate $direction Direction of axis
* @param ezcGraphColor $color Color of axis
* @param int $stepPosition
* @return void
*/
protected function drawGrid(ezcGraphRenderer $renderer, ezcGraphBoundings $boundings, ezcGraphCoordinate $position, ezcGraphCoordinate $direction, ezcGraphColor $color, $stepPosition = null)
{
// Calculate position on last axis
$start = new ezcGraphCoordinate($boundings->x0 + ($width = $boundings->width / 2), $boundings->y0 + ($height = $boundings->height / 2));
$lastAngle = $this->lastStep * 2 * M_PI;
$end = new ezcGraphCoordinate($start->x + sin($lastAngle) * $width, $start->y - cos($lastAngle) * $height);
$direction = new ezcGraphVector($end->x - $start->x, $end->y - $start->y);
$direction->unify();
// Convert elipse to circle for correct angle calculation
$direction->y *= $renderer->xAxisSpace / $renderer->yAxisSpace;
$angle = $direction->angle(new ezcGraphVector(0, 1));
$movement = new ezcGraphVector(sin($angle) * $renderer->xAxisSpace * ($direction->x < 0 ? -1 : 1), cos($angle) * $renderer->yAxisSpace);
$start->x += $movement->x;
$start->y += $movement->y;
$end->x -= $movement->x;
$end->y -= $movement->y;
$lastPosition = new ezcGraphCoordinate($start->x + ($end->x - $start->x) * $stepPosition, $start->y + ($end->y - $start->y) * $stepPosition);
$renderer->drawGridLine($position, $lastPosition, $color);
}
public function testVectorTransform()
{
$vector = new ezcGraphVector(0, 0);
$result = $vector->transform(new ezcGraphRotation(-90, new ezcGraphCoordinate(15, 15)));
$this->assertEquals($vector, new ezcGraphVector(0, 30), 'Vector transformation does not have the expected result', 0.0001);
$this->assertEquals($result, $vector, 'Result should be the vector itself');
}
/**
* Draw all left axis labels
*
* @return void
*/
protected function drawAxisLabels()
{
foreach ($this->axisLabels as $nr => $axisLabel) {
$start = $axisLabel['start'];
$end = $axisLabel['end'];
$direction = new ezcGraphVector($end->x - $start->x, $end->y - $start->y);
$direction->unify();
// Convert elipse to circle for correct angle calculation
$direction->y *= $this->xAxisSpace / $this->yAxisSpace;
$angle = $direction->angle(new ezcGraphVector(0, 1));
$movement = new ezcGraphVector(sin($angle) * $this->xAxisSpace * ($direction->x < 0 ? -1 : 1), cos($angle) * $this->yAxisSpace);
$start->x += $movement->x;
$start->y += $movement->y;
$end->x -= $movement->x;
$end->y -= $movement->y;
$axisLabel['object']->renderLabels($this, $axisLabel['boundings'], $start, $end, $axisLabel['axis']);
// Prevent from redrawing axis on more then 2 axis.
unset($this->axisLabels[$nr]);
}
}
