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Free form gourad triangle shading

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This commit is contained in:
Jakub Melka
2019-09-15 16:50:34 +02:00
parent 40290fd2ec
commit dc6bc3e96c
7 changed files with 433 additions and 23 deletions
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53
PdfForQtLib/sources/pdfpattern.h
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@ -312,6 +312,59 @@ private:
PDFReal m_r1 = 0.0;
};
class PDFGouradTriangleShading : public PDFShadingPattern
{
public:
explicit PDFGouradTriangleShading() = default;
protected:
friend class PDFPattern;
void addSubdividedTriangles(const PDFMeshQualitySettings& settings, PDFMesh& mesh, uint32_t v1, uint32_t v2, uint32_t v3, PDFColor c1, PDFColor c2, PDFColor c3) const;
uint8_t m_bitsPerCoordinate = 0;
uint8_t m_bitsPerComponent = 0;
PDFReal m_xmin = 0.0;
PDFReal m_xmax = 0.0;
PDFReal m_ymin = 0.0;
PDFReal m_ymax = 0.0;
std::vector<PDFReal> m_limits;
size_t m_colorComponentCount;
/// Color functions. This array can be empty. If it is empty,
/// then colors should be determined directly from color space.
std::vector<PDFFunctionPtr> m_functions;
/// Data of the shading, containing triangles and colors
QByteArray m_data;
};
class PDFFreeFormGouradTriangleShading : public PDFGouradTriangleShading
{
public:
explicit PDFFreeFormGouradTriangleShading() = default;
virtual ShadingType getShadingType() const override;
virtual PDFMesh createMesh(const PDFMeshQualitySettings& settings) const override;
private:
friend class PDFPattern;
uint8_t m_bitsPerFlag = 0;
};
class PDFLatticeFormGouradTriangleShading : public PDFGouradTriangleShading
{
public:
explicit PDFLatticeFormGouradTriangleShading() = default;
virtual ShadingType getShadingType() const override;
virtual PDFMesh createMesh(const PDFMeshQualitySettings& settings) const override;
private:
friend class PDFPattern;
};
} // namespace pdf
#endif // PDFPATTERN_H