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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
*/
#include "opengl/RenderList.hxx"
#include "opengl/VertexUtils.hxx"
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/polygon/b2dpolygontriangulator.hxx>
#include <basegfx/polygon/b2dpolypolygoncutter.hxx>
#include <basegfx/polygon/b2dtrapezoid.hxx>
namespace
{
inline void lclAddLineSegmentVertices(RenderParameters& rRenderParameter, GLfloat fX1, GLfloat fY1, GLfloat fX2, GLfloat fY2,
const SalColor& rColor, double fTransparency)
{
glm::vec2 aPoint1(fX1, fY1);
glm::vec2 aPoint2(fX2, fY2);
glm::vec2 aLineVector = vcl::vertex::normalize(aPoint2 - aPoint1);
glm::vec2 aNormal = glm::vec2(-aLineVector.y, aLineVector.x);
vcl::vertex::addLinePointFirst(rRenderParameter.maVertices, rRenderParameter.maExtrusionVectors,
aPoint1, aNormal, 1.0f);
vcl::vertex::addLinePointNext (rRenderParameter.maVertices, rRenderParameter.maExtrusionVectors,
aPoint1, aNormal, 1.0f,
aPoint2, aNormal, 1.0f);
vcl::vertex::addQuadColors<GL_TRIANGLES>(rRenderParameter.maColors, rColor, fTransparency);
}
} // end anonymous namespace
void RenderList::addDrawPixel(long nX, long nY, const SalColor& rColor)
{
if (rColor == SALCOLOR_NONE)
return;
checkOverlapping(basegfx::B2DRange(nX, nY, nX, nY));
RenderParameters& rRenderParameter = maRenderEntries.back().maTriangleParameters;
vcl::vertex::addRectangle<GL_TRIANGLES>(rRenderParameter.maVertices, nX - 0.5f, nY - 0.5f, nX + 0.5f, nY + 0.5f);
vcl::vertex::addQuadColors<GL_TRIANGLES>(rRenderParameter.maColors, rColor, 0.0f);
vcl::vertex::addQuadEmptyExtrusionVectors<GL_TRIANGLES>(rRenderParameter.maExtrusionVectors);
}
void RenderList::addDrawRectangle(long nX, long nY, long nWidth, long nHeight, const SalColor& rLineColor, const SalColor& rFillColor)
{
if (rLineColor == SALCOLOR_NONE && rFillColor == SALCOLOR_NONE)
return;
GLfloat fX1(nX);
GLfloat fY1(nY);
GLfloat fX2(nX + nWidth - 1);
GLfloat fY2(nY + nHeight - 1);
checkOverlapping(basegfx::B2DRange(fX1, fY1, fX2, fY2));
RenderParameters& rRenderParameter = maRenderEntries.back().maTriangleParameters;
// Draw rectangle stroke with line color
if (rLineColor != SALCOLOR_NONE)
{
vcl::vertex::addRectangle<GL_TRIANGLES>(rRenderParameter.maVertices, fX1 - 0.5f, fY1 - 0.5f, fX1 + 0.5f, fY2 + 0.5f);
vcl::vertex::addRectangle<GL_TRIANGLES>(rRenderParameter.maVertices, fX1 - 0.5f, fY1 - 0.5f, fX2 + 0.5f, fY1 + 0.5f);
vcl::vertex::addRectangle<GL_TRIANGLES>(rRenderParameter.maVertices, fX2 - 0.5f, fY1 - 0.5f, fX2 + 0.5f, fY2 + 0.5f);
vcl::vertex::addRectangle<GL_TRIANGLES>(rRenderParameter.maVertices, fX1 - 0.5f, fY2 - 0.5f, fX2 + 0.5f, fY2 + 0.5f);
vcl::vertex::addQuadColors<GL_TRIANGLES>(rRenderParameter.maColors, rLineColor, 0.0f);
vcl::vertex::addQuadColors<GL_TRIANGLES>(rRenderParameter.maColors, rLineColor, 0.0f);
vcl::vertex::addQuadColors<GL_TRIANGLES>(rRenderParameter.maColors, rLineColor, 0.0f);
vcl::vertex::addQuadColors<GL_TRIANGLES>(rRenderParameter.maColors, rLineColor, 0.0f);
vcl::vertex::addQuadEmptyExtrusionVectors<GL_TRIANGLES>(rRenderParameter.maExtrusionVectors);
vcl::vertex::addQuadEmptyExtrusionVectors<GL_TRIANGLES>(rRenderParameter.maExtrusionVectors);
vcl::vertex::addQuadEmptyExtrusionVectors<GL_TRIANGLES>(rRenderParameter.maExtrusionVectors);
vcl::vertex::addQuadEmptyExtrusionVectors<GL_TRIANGLES>(rRenderParameter.maExtrusionVectors);
}
if (rFillColor != SALCOLOR_NONE)
{
if (rLineColor == SALCOLOR_NONE)
{
// Draw rectangle stroke with fill color
vcl::vertex::addRectangle<GL_TRIANGLES>(rRenderParameter.maVertices, fX1 - 0.5f, fY1 - 0.5f, fX1 + 0.5f, fY2 + 0.5f);
vcl::vertex::addRectangle<GL_TRIANGLES>(rRenderParameter.maVertices, fX1 - 0.5f, fY1 - 0.5f, fX2 + 0.5f, fY1 + 0.5f);
vcl::vertex::addRectangle<GL_TRIANGLES>(rRenderParameter.maVertices, fX2 - 0.5f, fY1 - 0.5f, fX2 + 0.5f, fY2 + 0.5f);
vcl::vertex::addRectangle<GL_TRIANGLES>(rRenderParameter.maVertices, fX1 - 0.5f, fY2 - 0.5f, fX2 + 0.5f, fY2 + 0.5f);
vcl::vertex::addQuadColors<GL_TRIANGLES>(rRenderParameter.maColors, rFillColor, 0.0f);
vcl::vertex::addQuadColors<GL_TRIANGLES>(rRenderParameter.maColors, rFillColor, 0.0f);
vcl::vertex::addQuadColors<GL_TRIANGLES>(rRenderParameter.maColors, rFillColor, 0.0f);
vcl::vertex::addQuadColors<GL_TRIANGLES>(rRenderParameter.maColors, rFillColor, 0.0f);
vcl::vertex::addQuadEmptyExtrusionVectors<GL_TRIANGLES>(rRenderParameter.maExtrusionVectors);
vcl::vertex::addQuadEmptyExtrusionVectors<GL_TRIANGLES>(rRenderParameter.maExtrusionVectors);
vcl::vertex::addQuadEmptyExtrusionVectors<GL_TRIANGLES>(rRenderParameter.maExtrusionVectors);
vcl::vertex::addQuadEmptyExtrusionVectors<GL_TRIANGLES>(rRenderParameter.maExtrusionVectors);
}
// Draw rectangle fill with fill color
vcl::vertex::addRectangle<GL_TRIANGLES>(rRenderParameter.maVertices, fX1 + 0.5f, fY1 + 0.5f, fX2 - 0.5f, fY2 - 0.5f);
vcl::vertex::addQuadColors<GL_TRIANGLES>(rRenderParameter.maColors, rFillColor, 0.0f);
vcl::vertex::addQuadEmptyExtrusionVectors<GL_TRIANGLES>(rRenderParameter.maExtrusionVectors);
}
}
void RenderList::addDrawLine(long nX1, long nY1, long nX2, long nY2, const SalColor& rLineColor, bool bUseAA)
{
if (rLineColor == SALCOLOR_NONE)
return;
checkOverlapping(basegfx::B2DRange(nX1, nY1, nX2, nY2));
RenderParameters& rRenderParameter = bUseAA ? maRenderEntries.back().maLineAAParameters :
maRenderEntries.back().maLineParameters;
lclAddLineSegmentVertices(rRenderParameter, nX1, nY1, nX2, nY2, rLineColor, 0.0f);
}
void RenderList::addDrawPolyPolygon(const basegfx::B2DPolyPolygon& rPolyPolygon, double fTransparency,
const SalColor& rLineColor, const SalColor& rFillColor, bool bUseAA)
{
if (rPolyPolygon.count() <= 0)
return;
if (rLineColor == SALCOLOR_NONE && rFillColor == SALCOLOR_NONE)
return;
if (fTransparency == 1.0)
return;
checkOverlapping(rPolyPolygon.getB2DRange());
RenderParameters& rLineParameter = maRenderEntries.back().maLineParameters;
RenderParameters& rLineAAParameter = maRenderEntries.back().maLineAAParameters;
if (rFillColor != SALCOLOR_NONE)
{
RenderParameters& rTriangleParameter = maRenderEntries.back().maTriangleParameters;
const basegfx::B2DPolyPolygon& aSimplePolyPolygon = ::basegfx::tools::solveCrossovers(rPolyPolygon);
basegfx::B2DTrapezoidVector aTrapezoidVector;
basegfx::tools::trapezoidSubdivide(aTrapezoidVector, aSimplePolyPolygon);
if (!aTrapezoidVector.empty())
{
for (basegfx::B2DTrapezoid & rTrapezoid : aTrapezoidVector)
{
GLfloat topX1 = rTrapezoid.getTopXLeft();
GLfloat topX2 = rTrapezoid.getTopXRight();
GLfloat topY = rTrapezoid.getTopY();
GLfloat bottomX1 = rTrapezoid.getBottomXLeft();
GLfloat bottomX2 = rTrapezoid.getBottomXRight();
GLfloat bottomY = rTrapezoid.getBottomY();
vcl::vertex::addTrapezoid<GL_TRIANGLES>(rTriangleParameter.maVertices,
topX1, topY,
topX2, topY,
bottomX1, bottomY,
bottomX2, bottomY);
vcl::vertex::addQuadColors<GL_TRIANGLES>(rTriangleParameter.maColors, rFillColor, fTransparency);
vcl::vertex::addQuadEmptyExtrusionVectors<GL_TRIANGLES>(rTriangleParameter.maExtrusionVectors);
if (bUseAA)
{
lclAddLineSegmentVertices(rLineAAParameter, topX1, topY, topX2, topY,
rFillColor, fTransparency);
lclAddLineSegmentVertices(rLineAAParameter, topX2, topY, bottomX2, bottomY,
rFillColor, fTransparency);
lclAddLineSegmentVertices(rLineAAParameter, bottomX2, bottomY, bottomX1, bottomY,
rFillColor, fTransparency);
lclAddLineSegmentVertices(rLineAAParameter, bottomX1, bottomY, topX1, topY,
rFillColor, fTransparency);
}
}
}
}
if (rLineColor != SALCOLOR_NONE && rLineColor != rFillColor)
{
RenderParameters& rParameter = bUseAA ? rLineAAParameter : rLineParameter;
for (const basegfx::B2DPolygon& rPolygon : rPolyPolygon)
{
basegfx::B2DPolygon aPolygon(rPolygon);
if (rPolygon.areControlPointsUsed())
aPolygon = rPolygon.getDefaultAdaptiveSubdivision();
sal_uInt32 nPoints = aPolygon.count();
GLfloat x1, y1, x2, y2;
sal_uInt32 index1, index2;
for (sal_uInt32 i = 0; i <= nPoints; ++i)
{
index1 = (i) % nPoints;
index2 = (i + 1) % nPoints;
x1 = aPolygon.getB2DPoint(index1).getX();
y1 = aPolygon.getB2DPoint(index1).getY();
x2 = aPolygon.getB2DPoint(index2).getX();
y2 = aPolygon.getB2DPoint(index2).getY();
lclAddLineSegmentVertices(rParameter, x1, y1, x2, y2, rLineColor, fTransparency);
}
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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