#include "tregionprop.h"
#include "tstroke.h"
#include "tregion.h"
//#include "tcurves.h"
//#include "tgl.h"
//#include "tcolorfunctions.h"
#include "tmathutil.h"
#include "drawutil.h"
#include "tvectorrenderdata.h"
//#include "tcolorstyles.h"
#include "tsimplecolorstyles.h"
//#include "tcurveutil.h"
//#include "tdebugmessage.h"
//#include "tflash.h"
#ifndef _WIN32
#define CALLBACK
#endif
//=============================================================================
TRegionProp::TRegionProp(const TRegion *region)
: m_region(region), m_regionChanged(true)
{
}
//-------------------------------------------------------------------
//===================================================================
namespace
{
//-------------------------------------------------------------------
bool computeOutline(const TRegion *region,
TRegionOutline::PointVector &polyline,
const double pixelSize)
{
bool doAntialiasing = false;
polyline.clear();
std::vector<TPointD> polyline2d;
std::vector<int> indices;
int i, edgeSize = region->getEdgeCount(), oldSize = 0;
for (i = 0; i < edgeSize; i++) {
TEdge &edge = *region->getEdge(i);
if (edge.m_index >= 0 && edge.m_s) {
bool outline = (edge.m_s->getAverageThickness() == 0.0);
if (outline && !doAntialiasing) {
//The region must be antialiased if it has at least one invisible (0-thin) edge
doAntialiasing = true;
//Plus, edges will have to be reproduced independently from the edge side
indices.reserve(edgeSize);
}
if (outline && (edge.m_w0 > edge.m_w1)) {
int newSize = polyline2d.size();
if (oldSize < newSize) {
//There is a sequence of forward vertices
indices.push_back(newSize - oldSize);
oldSize = newSize;
}
stroke2polyline(polyline2d, *edge.m_s, pixelSize, edge.m_w1, edge.m_w0, true);
//Insert the sequence of backward vertices
newSize = polyline2d.size();
indices.push_back(oldSize - newSize);
oldSize = newSize;
} else
stroke2polyline(polyline2d, *edge.m_s, pixelSize, edge.m_w0, edge.m_w1);
}
}
//Copy points to the output
int pointNumber = polyline2d.size();
polyline.reserve(pointNumber);
int j, k, l, indicesCount = indices.size();
for (i = 0, k = 0; k < indicesCount; ++k) {
l = indices[k];
if (l == 0)
continue;
if (l > 0) {
l = i + l;
for (j = i; j < l; ++j)
polyline.push_back(T3DPointD(polyline2d[j], 0.0));
i = l;
} else {
l = i - l;
j = l - 1;
//Inverted sequences are symmetric by construction.
//If necessary, chop the last element.
if (polyline2d[i] == polyline2d[j])
++i;
for (; j >= i; --j)
polyline.push_back(T3DPointD(polyline2d[j], 0.0));
i = l;
}
}
//Finally, copy the remaining (forward) ones
for (; i < pointNumber; ++i)
polyline.push_back(T3DPointD(polyline2d[i], 0.0));
return doAntialiasing;
}
/*!
This function accept a polygon which can have autointersections,
and creates a number of not-autointersecting polygons. the second function is for recursive calls.
It is used for The GlTessellator
*/
//-------------------------------------------------------------------
//-------------------------------------------------------------------
} //end namaspace
//-------------------------------------------------------------------
//-------------------------------------------------------------------
void OutlineRegionProp::computeRegionOutline()
{
int subRegionNumber = getRegion()->getSubregionCount();
TRegionOutline::PointVector app;
m_outline.m_exterior.clear();
computeOutline(getRegion(), app, m_pixelSize);
m_outline.m_doAntialiasing = true;
m_outline.m_exterior.push_back(app);
m_outline.m_interior.clear();
m_outline.m_interior.reserve(subRegionNumber);
for (int i = 0; i < subRegionNumber; i++) {
app.clear();
computeOutline(getRegion()->getSubregion(i), app, m_pixelSize);
m_outline.m_doAntialiasing = true;
m_outline.m_interior.push_back(app);
}
m_outline.m_bbox = getRegion()->getBBox();
}
//-------------------------------------------------------------------
OutlineRegionProp::OutlineRegionProp(const TRegion *region, const TOutlineStyleP colorStyle)
: TRegionProp(region), m_pixelSize(0), m_colorStyle(colorStyle)
{
m_styleVersionNumber = m_colorStyle->getVersionNumber();
}
//-------------------------------------------------------------------
void OutlineRegionProp::draw(const TVectorRenderData &rd)
{
if (rd.m_clippingRect != TRect() && !rd.m_is3dView && !(rd.m_aff * getRegion()->getBBox()).overlaps(convert(rd.m_clippingRect)))
return;
glPushMatrix();
tglMultMatrix(rd.m_aff);
double pixelSize = sqrt(tglGetPixelSize2());
if (!isAlmostZero(pixelSize - m_pixelSize, 1e-5) ||
m_regionChanged ||
m_styleVersionNumber != m_colorStyle->getVersionNumber()) {
m_pixelSize = pixelSize;
m_regionChanged = false;
computeRegionOutline();
TOutlineStyle::RegionOutlineModifier *modifier = m_colorStyle->getRegionOutlineModifier();
if (modifier)
modifier->modify(m_outline);
m_styleVersionNumber = m_colorStyle->getVersionNumber();
}
assert(!m_outline.m_exterior.empty());
m_colorStyle->drawRegion(rd.m_cf,
rd.m_antiAliasing && rd.m_regionAntialias,
m_outline);
glPopMatrix();
}
//-------------------------------------------------------------------
TRegionProp *OutlineRegionProp::clone(const TRegion *region) const
{
OutlineRegionProp *prop = new OutlineRegionProp(region, m_colorStyle);
prop->m_regionChanged = m_regionChanged;
prop->m_pixelSize = m_pixelSize;
prop->m_outline = m_outline;
return prop;
}
//-------------------------------------------------------------------
const TColorStyle *OutlineRegionProp::getColorStyle() const
{
return m_colorStyle.getPointer();
}
//-------------------------------------------------------------------
void OutlineRegionProp::draw(TFlash &flash)
{
m_colorStyle->drawRegion(flash, getRegion());
/*
//flash.setColor(m_colorStyle->getMainColor());
m_colorStyle->setFill(flash);
//rd.setTexture(m_colorStyle->getMainColor());
for (i=0; i<(int)r->getEdgeCount(); i++)
computeQuadChain(*r->getEdge(i), quadArray, toBeDeleted);
flash.drawPolygon(quadArray);
clearPointerContainer(toBeDeleted);
*/
}