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Performance optimalization of patch meshes

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Jakub Melka
2021-03-20 18:04:58 +01:00
parent e9bff58c06
commit 67872a532f
4 changed files with 63 additions and 20 deletions
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7
Pdf4QtLib/sources/pdfpattern.h
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@ -546,7 +546,7 @@ public:
using PointMatrix = std::array<std::array<QPointF, 4>, 4>;
using Colors = std::array<PDFColor, 4>;
explicit inline PDFTensorPatch(PointMatrix P, Colors colors) : m_P(P), m_colors(colors) { }
explicit inline PDFTensorPatch(PointMatrix P, Colors colors) : m_P(P), m_colors(colors) { computeBoundingRectangle(); }
/// Calculates value at point in the patch.
/// \param u Horizontal coordinate of the patch, must be in range [0, 1]
@ -654,8 +654,11 @@ private:
static constexpr PDFReal pow2(PDFReal x) { return x * x; }
static constexpr PDFReal pow3(PDFReal x) { return x * x * x; }
void computeBoundingRectangle();
PointMatrix m_P = { };
Colors m_colors = { };
QRectF m_boundingBox; ///< Bounding box of the tensor product patch
};
using PDFTensorPatches = std::vector<PDFTensorPatch>;
@ -671,7 +674,7 @@ public:
protected:
struct Triangle;
void fillMesh(PDFMesh& mesh, const PDFMeshQualitySettings& settings, const PDFTensorPatch& patch, const PDFCMS* cms, RenderingIntent intent, PDFRenderErrorReporter* reporter) const;
void fillMesh(PDFMesh& mesh, const PDFMeshQualitySettings& settings, const PDFTensorPatch& patch, const PDFCMS* cms, RenderingIntent intent, PDFRenderErrorReporter* reporter, bool fastAlgorithm) const;
void fillMesh(PDFMesh& mesh, const QMatrix& patternSpaceToDeviceSpaceMatrix, const PDFMeshQualitySettings& settings, const PDFTensorPatches& patches, const PDFCMS* cms, RenderingIntent intent, PDFRenderErrorReporter* reporter) const;
static void addTriangle(std::vector<Triangle>& triangles, const PDFTensorPatch& patch, std::array<QPointF, 3> uvCoordinates);