138 lines
4.7 KiB
C++
138 lines
4.7 KiB
C++
/**
|
|
* @author Edouard DUPIN
|
|
*
|
|
* @copyright 2011, Edouard DUPIN, all right reserved
|
|
*
|
|
* @license APACHE v2.0 (see license file)
|
|
*/
|
|
|
|
#include <esvg/debug.h>
|
|
#include <esvg/Circle.h>
|
|
#include <esvg/render/Path.h>
|
|
#include <esvg/render/Weight.h>
|
|
|
|
#undef __class__
|
|
#define __class__ "Circle"
|
|
|
|
esvg::Circle::Circle(PaintState _parentPaintState) : esvg::Base(_parentPaintState) {
|
|
|
|
}
|
|
|
|
esvg::Circle::~Circle() {
|
|
|
|
}
|
|
|
|
bool esvg::Circle::parseXML(const std::shared_ptr<exml::Element>& _element, mat2& _parentTrans, vec2& _sizeMax) {
|
|
m_radius = 0.0;
|
|
m_position.setValue(0,0);
|
|
if (_element == nullptr) {
|
|
return false;
|
|
}
|
|
parseTransform(_element);
|
|
parsePaintAttr(_element);
|
|
|
|
// add the property of the parrent modifications ...
|
|
m_transformMatrix *= _parentTrans;
|
|
|
|
std::string content = _element->getAttribute("cx");
|
|
if (content.size()!=0) {
|
|
m_position.setX(parseLength(content));
|
|
}
|
|
content = _element->getAttribute("cy");
|
|
if (content.size()!=0) {
|
|
m_position.setY(parseLength(content));
|
|
}
|
|
content = _element->getAttribute("r");
|
|
if (content.size()!=0) {
|
|
m_radius = parseLength(content);
|
|
} else {
|
|
SVG_ERROR("(l "<<_element->getPos()<<") Circle \"r\" is not present");
|
|
return false;
|
|
}
|
|
if (0 > m_radius) {
|
|
m_radius = 0;
|
|
SVG_ERROR("(l "<<_element->getPos()<<") Circle \"r\" is negative");
|
|
return false;
|
|
}
|
|
_sizeMax.setValue(m_position.x() + m_radius, m_position.y() + m_radius);
|
|
return true;
|
|
}
|
|
|
|
void esvg::Circle::display(int32_t _spacing) {
|
|
SVG_DEBUG(spacingDist(_spacing) << "Circle " << m_position << " radius=" << m_radius);
|
|
}
|
|
|
|
|
|
void esvg::Circle::draw(esvg::Renderer& _myRenderer, mat2& _basicTrans, int32_t _level) {
|
|
SVG_VERBOSE(spacingDist(_level) << "DRAW esvg::Circle");
|
|
if (m_radius <= 0.0f) {
|
|
SVG_VERBOSE(spacingDist(_level+1) << "Too small radius" << m_radius);
|
|
return;
|
|
}
|
|
esvg::render::Path listElement;
|
|
listElement.clear();
|
|
listElement.moveTo(false, m_position + vec2(m_radius, 0.0f));
|
|
listElement.curveTo(false,
|
|
m_position + vec2(m_radius, m_radius*esvg::kappa90),
|
|
m_position + vec2(m_radius*esvg::kappa90, m_radius),
|
|
m_position + vec2(0.0f, m_radius));
|
|
listElement.curveTo(false,
|
|
m_position + vec2(-m_radius*esvg::kappa90, m_radius),
|
|
m_position + vec2(-m_radius, m_radius*esvg::kappa90),
|
|
m_position + vec2(-m_radius, 0.0f));
|
|
listElement.curveTo(false,
|
|
m_position + vec2(-m_radius, -m_radius*esvg::kappa90),
|
|
m_position + vec2(-m_radius*esvg::kappa90, -m_radius),
|
|
m_position + vec2(0.0f, -m_radius));
|
|
listElement.curveTo(false,
|
|
m_position + vec2(m_radius*esvg::kappa90, -m_radius),
|
|
m_position + vec2(m_radius, -m_radius*esvg::kappa90),
|
|
m_position + vec2(m_radius, 0.0f));
|
|
listElement.close();
|
|
|
|
mat2 mtx = m_transformMatrix;
|
|
mtx *= _basicTrans;
|
|
|
|
esvg::render::PointList listPoints;
|
|
listPoints = listElement.generateListPoints(_level,
|
|
_myRenderer.getInterpolationRecurtionMax(),
|
|
_myRenderer.getInterpolationThreshold());
|
|
listPoints.applyMatrix(mtx);
|
|
esvg::render::SegmentList listSegmentFill;
|
|
esvg::render::SegmentList listSegmentStroke;
|
|
esvg::render::Weight tmpFill;
|
|
esvg::render::Weight tmpStroke;
|
|
// Check if we need to display background
|
|
if (m_paint.fill.a() != 0x00) {
|
|
listSegmentFill.createSegmentList(listPoints);
|
|
// now, traverse the scanlines and find the intersections on each scanline, use non-zero rule
|
|
tmpFill.generate(_myRenderer.getSize(),
|
|
_myRenderer.getNumberSubScanLine(),
|
|
listSegmentFill);
|
|
}
|
|
// check if we need to display stroke:
|
|
if ( m_paint.strokeWidth > 0
|
|
&& m_paint.stroke.a() != 0x00) {
|
|
listSegmentStroke.createSegmentListStroke(listPoints,
|
|
m_paint.strokeWidth,
|
|
m_paint.lineCap,
|
|
m_paint.lineJoin,
|
|
m_paint.miterLimit);
|
|
// now, traverse the scanlines and find the intersections on each scanline, use non-zero rule
|
|
tmpStroke.generate(_myRenderer.getSize(),
|
|
_myRenderer.getNumberSubScanLine(),
|
|
listSegmentStroke);
|
|
}
|
|
// add on images:
|
|
_myRenderer.print(tmpFill,
|
|
m_paint.fill,
|
|
tmpStroke,
|
|
m_paint.stroke,
|
|
m_paint.opacity);
|
|
#ifdef DEBUG
|
|
_myRenderer.addDebugSegment(listSegmentFill);
|
|
_myRenderer.addDebugSegment(listSegmentStroke);
|
|
#endif
|
|
}
|
|
|