100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
/**
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* @author Edouard DUPIN
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*
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* @copyright 2011, Edouard DUPIN, all right reserved
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*
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* @license BSD v3 (see license file)
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*/
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#include <esvg/debug.h>
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#include <esvg/Circle.h>
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#include <agg/agg_conv_stroke.h>
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#include <agg/agg_ellipse.h>
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#undef __class__
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#define __class__ "Circle"
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esvg::Circle::Circle(PaintState _parentPaintState) : esvg::Base(_parentPaintState) {
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}
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esvg::Circle::~Circle() {
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}
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bool esvg::Circle::parse(exml::Element * _element, agg::trans_affine& _parentTrans, etk::Vector2D<float>& _sizeMax) {
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m_radius = 0.0;
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m_position.setValue(0,0);
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if (NULL == _element) {
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return false;
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}
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parseTransform(_element);
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parsePaintAttr(_element);
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// add the property of the parrent modifications ...
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m_transformMatrix *= _parentTrans;
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std::string content = _element->getAttribute("cx");
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if (content.size()!=0) {
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m_position.setX(parseLength(content));
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}
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content = _element->getAttribute("cy");
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if (content.size()!=0) {
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m_position.setY(parseLength(content));
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}
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content = _element->getAttribute("r");
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if (content.size()!=0) {
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m_radius = parseLength(content);
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} else {
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SVG_ERROR("(l "<<_element->getPos()<<") Circle \"r\" is not present");
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return false;
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}
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if (0 > m_radius) {
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m_radius = 0;
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SVG_ERROR("(l "<<_element->getPos()<<") Circle \"r\" is negative");
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return false;
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}
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_sizeMax.setValue(m_position.x() + m_radius, m_position.y() + m_radius);
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return true;
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}
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void esvg::Circle::display(int32_t _spacing)
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{
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SVG_DEBUG(spacingDist(_spacing) << "Circle " << m_position << " radius=" << m_radius);
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}
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void esvg::Circle::aggDraw(esvg::Renderer& _myRenderer, agg::trans_affine& _basicTrans)
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{
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_myRenderer.m_renderArea->color(agg::rgba8(m_paint.fill.r, m_paint.fill.g, m_paint.fill.b, m_paint.fill.a));
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// Creating an ellipse
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agg::ellipse myCircle(m_position.x(), m_position.y(), m_radius, m_radius, 0);
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// Calculate transformation matrix ...
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agg::trans_affine mtx = m_transformMatrix;
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mtx *= _basicTrans;
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// set the filling mode :
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_myRenderer.m_rasterizer.filling_rule((m_paint.flagEvenOdd)?agg::fill_even_odd:agg::fill_non_zero);
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if (m_paint.fill.a != 0x00) {
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agg::conv_transform<agg::ellipse, agg::trans_affine> trans(myCircle, mtx);
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_myRenderer.m_rasterizer.add_path(trans);
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agg::render_scanlines(_myRenderer.m_rasterizer, _myRenderer.m_scanLine, *_myRenderer.m_renderArea);
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}
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if (m_paint.strokeWidth > 0 && m_paint.stroke.a!=0x00 ) {
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_myRenderer.m_renderArea->color(agg::rgba8(m_paint.stroke.r, m_paint.stroke.g, m_paint.stroke.b, m_paint.stroke.a));
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// drawing as an outline
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agg::conv_stroke<agg::ellipse> myCircleStroke(myCircle);
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myCircleStroke.width(m_paint.strokeWidth);
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agg::conv_transform<agg::conv_stroke<agg::ellipse>, agg::trans_affine> transStroke(myCircleStroke, mtx);
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// set the filling mode :
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_myRenderer.m_rasterizer.filling_rule(agg::fill_non_zero);
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_myRenderer.m_rasterizer.add_path(transStroke);
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agg::render_scanlines(_myRenderer.m_rasterizer, _myRenderer.m_scanLine, *_myRenderer.m_renderArea);
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}
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}
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