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https://github.com/JakubMelka/PDF4QT.git
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76 lines
3.1 KiB
C++
76 lines
3.1 KiB
C++
// Copyright (C) 2019-2021 Jakub Melka
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//
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// This file is part of Pdf4Qt.
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//
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// Pdf4Qt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// with the written consent of the copyright owner, any later version.
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//
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// Pdf4Qt is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with Pdf4Qt. If not, see <https://www.gnu.org/licenses/>.
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#ifndef PDFMESHQUALITYSETTINGS_H
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#define PDFMESHQUALITYSETTINGS_H
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#include "pdfglobal.h"
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#include <QMatrix>
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namespace pdf
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{
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struct PDFMeshQualitySettings
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{
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/// Initializes default resolution
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void initResolution();
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/// Value used to compute minimal pxiel size resolution (it is multiplied by whole shading area size)
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PDFReal minimalMeshResolutionRatio = 0.005;
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/// Value used to compute pixel size resolution (it is multiplied by whole shading area size)
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PDFReal preferredMeshResolutionRatio = 0.02;
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/// Matrix, which transforms user space points (user space is target space of the shading)
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/// to the device space of the paint device.
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QMatrix userSpaceToDeviceSpaceMatrix;
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/// Rectangle in device space coordinate system, onto which is area meshed.
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QRectF deviceSpaceMeshingArea;
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/// Preferred mesh resolution in device space pixels. Mesh will be created in this
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/// resolution, if it is smooth enough (no jumps in colors occurs).
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PDFReal preferredMeshResolution = 1.0;
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/// Minimal mesh resolution in device space pixels. If jumps in colors occurs (jump
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/// is two colors, that differ more than \p color tolerance), then mesh is meshed to
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/// minimal mesh resolution.
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PDFReal minimalMeshResolution = 1.0;
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/// Color tolerance - 1% by default
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PDFReal tolerance = 0.01;
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/// Test points to determine maximal curvature of the tensor product patch meshes
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PDFInteger patchTestPoints = 64;
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/// Lower value of the surface curvature meshing resolution mapping. When ratio between
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/// current curvature at the center of meshed triangle and maximal curvature is below
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/// this value, then prefered mesh resolution is used. If ratio is higher than this value
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/// and lower than \p patchResolutionMappingRatioHigh, then target length is linearly mapped.
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/// If value is higher, than \p patchResolutionMappingRatioHigh, then minimal mesh resolution
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/// is used when generating triangles on the patch.
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PDFReal patchResolutionMappingRatioLow = 0.3;
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/// Highter value of the surface curvature meshing resolution mapping. \sa patchResolutionMappingRatioLow
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PDFReal patchResolutionMappingRatioHigh = 0.9;
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};
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} // namespace pdf
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#endif // PDFMESHQUALITYSETTINGS_H
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