231 lines
6.1 KiB
C++
231 lines
6.1 KiB
C++
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#include "tregionprop.h"
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#include "tstroke.h"
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#include "tregion.h"
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//#include "tcurves.h"
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//#include "tgl.h"
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//#include "tcolorfunctions.h"
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#include "tmathutil.h"
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#include "drawutil.h"
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#include "tvectorrenderdata.h"
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//#include "tcolorstyles.h"
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#include "tsimplecolorstyles.h"
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//#include "tcurveutil.h"
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//#include "tdebugmessage.h"
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//#include "tflash.h"
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#ifndef WIN32
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#define CALLBACK
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#endif
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//=============================================================================
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TRegionProp::TRegionProp(const TRegion *region)
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: m_region(region), m_regionChanged(true)
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{
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}
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//-------------------------------------------------------------------
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//===================================================================
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namespace
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{
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//-------------------------------------------------------------------
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bool computeOutline(const TRegion *region,
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TRegionOutline::PointVector &polyline,
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const double pixelSize)
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{
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bool doAntialiasing = false;
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polyline.clear();
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vector<TPointD> polyline2d;
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vector<int> indices;
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int i, edgeSize = region->getEdgeCount(), oldSize = 0;
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for (i = 0; i < edgeSize; i++) {
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TEdge &edge = *region->getEdge(i);
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if (edge.m_index >= 0 && edge.m_s) {
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bool outline = (edge.m_s->getAverageThickness() == 0.0);
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if (outline && !doAntialiasing) {
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//The region must be antialiased if it has at least one invisible (0-thin) edge
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doAntialiasing = true;
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//Plus, edges will have to be reproduced independently from the edge side
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indices.reserve(edgeSize);
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}
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if (outline && (edge.m_w0 > edge.m_w1)) {
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int newSize = polyline2d.size();
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if (oldSize < newSize) {
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//There is a sequence of forward vertices
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indices.push_back(newSize - oldSize);
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oldSize = newSize;
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}
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stroke2polyline(polyline2d, *edge.m_s, pixelSize, edge.m_w1, edge.m_w0, true);
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//Insert the sequence of backward vertices
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newSize = polyline2d.size();
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indices.push_back(oldSize - newSize);
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oldSize = newSize;
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} else
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stroke2polyline(polyline2d, *edge.m_s, pixelSize, edge.m_w0, edge.m_w1);
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}
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}
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//Copy points to the output
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int pointNumber = polyline2d.size();
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polyline.reserve(pointNumber);
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int j, k, l, indicesCount = indices.size();
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for (i = 0, k = 0; k < indicesCount; ++k) {
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l = indices[k];
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if (l == 0)
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continue;
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if (l > 0) {
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l = i + l;
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for (j = i; j < l; ++j)
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polyline.push_back(T3DPointD(polyline2d[j], 0.0));
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i = l;
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} else {
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l = i - l;
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j = l - 1;
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//Inverted sequences are symmetric by construction.
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//If necessary, chop the last element.
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if (polyline2d[i] == polyline2d[j])
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++i;
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for (; j >= i; --j)
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polyline.push_back(T3DPointD(polyline2d[j], 0.0));
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i = l;
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}
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}
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//Finally, copy the remaining (forward) ones
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for (; i < pointNumber; ++i)
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polyline.push_back(T3DPointD(polyline2d[i], 0.0));
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return doAntialiasing;
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}
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/*!
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This function accept a polygon which can have autointersections,
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and creates a number of not-autointersecting polygons. the second function is for recursive calls.
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It is used for The GlTessellator
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*/
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//-------------------------------------------------------------------
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//-------------------------------------------------------------------
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} //end namaspace
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//-------------------------------------------------------------------
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//-------------------------------------------------------------------
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void OutlineRegionProp::computeRegionOutline()
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{
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int subRegionNumber = getRegion()->getSubregionCount();
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TRegionOutline::PointVector app;
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m_outline.m_exterior.clear();
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computeOutline(getRegion(), app, m_pixelSize);
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m_outline.m_doAntialiasing = true;
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m_outline.m_exterior.push_back(app);
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m_outline.m_interior.clear();
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m_outline.m_interior.reserve(subRegionNumber);
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for (int i = 0; i < subRegionNumber; i++) {
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app.clear();
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computeOutline(getRegion()->getSubregion(i), app, m_pixelSize);
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m_outline.m_doAntialiasing = true;
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m_outline.m_interior.push_back(app);
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}
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m_outline.m_bbox = getRegion()->getBBox();
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}
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//-------------------------------------------------------------------
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OutlineRegionProp::OutlineRegionProp(const TRegion *region, const TOutlineStyleP colorStyle)
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: TRegionProp(region), m_pixelSize(0), m_colorStyle(colorStyle)
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{
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m_styleVersionNumber = m_colorStyle->getVersionNumber();
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}
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//-------------------------------------------------------------------
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void OutlineRegionProp::draw(const TVectorRenderData &rd)
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{
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if (rd.m_clippingRect != TRect() && !rd.m_is3dView && !(rd.m_aff * getRegion()->getBBox()).overlaps(convert(rd.m_clippingRect)))
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return;
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glPushMatrix();
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tglMultMatrix(rd.m_aff);
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double pixelSize = sqrt(tglGetPixelSize2());
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if (!isAlmostZero(pixelSize - m_pixelSize, 1e-5) ||
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m_regionChanged ||
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m_styleVersionNumber != m_colorStyle->getVersionNumber()) {
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m_pixelSize = pixelSize;
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m_regionChanged = false;
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computeRegionOutline();
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TOutlineStyle::RegionOutlineModifier *modifier = m_colorStyle->getRegionOutlineModifier();
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if (modifier)
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modifier->modify(m_outline);
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m_styleVersionNumber = m_colorStyle->getVersionNumber();
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}
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assert(!m_outline.m_exterior.empty());
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m_colorStyle->drawRegion(rd.m_cf,
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rd.m_antiAliasing && rd.m_regionAntialias,
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m_outline);
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glPopMatrix();
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}
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//-------------------------------------------------------------------
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TRegionProp *OutlineRegionProp::clone(const TRegion *region) const
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{
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OutlineRegionProp *prop = new OutlineRegionProp(region, m_colorStyle);
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prop->m_regionChanged = m_regionChanged;
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prop->m_pixelSize = m_pixelSize;
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prop->m_outline = m_outline;
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return prop;
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}
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//-------------------------------------------------------------------
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const TColorStyle *OutlineRegionProp::getColorStyle() const
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{
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return m_colorStyle.getPointer();
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}
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//-------------------------------------------------------------------
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void OutlineRegionProp::draw(TFlash &flash)
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{
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m_colorStyle->drawRegion(flash, getRegion());
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/*
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//flash.setColor(m_colorStyle->getMainColor());
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m_colorStyle->setFill(flash);
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//rd.setTexture(m_colorStyle->getMainColor());
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for (i=0; i<(int)r->getEdgeCount(); i++)
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computeQuadChain(*r->getEdge(i), quadArray, toBeDeleted);
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flash.drawPolygon(quadArray);
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clearPointerContainer(toBeDeleted);
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*/
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}
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