105 lines
2.7 KiB
C++
105 lines
2.7 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright 2011, Blender Foundation.
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*/
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#pragma once
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#include "COM_NodeOperation.h"
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#include "DNA_node_types.h"
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struct RNG;
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namespace blender::compositor {
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class ScreenLensDistortionOperation : public NodeOperation {
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private:
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/**
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* Cached reference to the inputProgram
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*/
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SocketReader *m_inputProgram;
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struct RNG *m_rng;
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bool m_fit;
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bool m_jitter;
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float m_dispersion;
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float m_distortion;
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bool m_dispersion_const;
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bool m_distortion_const;
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bool m_variables_ready;
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float m_k[3];
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float m_k4[3];
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float m_dk4[3];
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float m_maxk;
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float m_sc, m_cx, m_cy;
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public:
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ScreenLensDistortionOperation();
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/**
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* The inner loop of this operation.
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*/
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void executePixel(float output[4], int x, int y, void *data) override;
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/**
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* Initialize the execution
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*/
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void initExecution() override;
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void *initializeTileData(rcti *rect) override;
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/**
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* Deinitialize the execution
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*/
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void deinitExecution() override;
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void setFit(bool fit)
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{
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m_fit = fit;
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}
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void setJitter(bool jitter)
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{
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m_jitter = jitter;
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}
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/** Set constant distortion value */
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void setDistortion(float distortion);
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/** Set constant dispersion value */
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void setDispersion(float dispersion);
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bool determineDependingAreaOfInterest(rcti *input,
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ReadBufferOperation *readOperation,
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rcti *output) override;
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private:
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void determineUV(float result[6], float x, float y) const;
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void updateVariables(float distortion, float dispersion);
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void get_uv(const float xy[2], float uv[2]) const;
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void distort_uv(const float uv[2], float t, float xy[2]) const;
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bool get_delta(float r_sq, float k4, const float uv[2], float delta[2]) const;
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void accumulate(MemoryBuffer *buffer,
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int a,
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int b,
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float r_sq,
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const float uv[2],
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const float delta[3][2],
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float sum[4],
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int count[3]) const;
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};
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} // namespace blender::compositor
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