Campbell Barton
e12c08e8d1
Apply clang format as proposed in T53211. For details on usage and instructions for migrating branches without conflicts, see: https://wiki.blender.org/wiki/Tools/ClangFormat
132 lines
4.2 KiB
C++
132 lines
4.2 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 2012, Blender Foundation.
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*/
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#include "COM_DisplaceSimpleOperation.h"
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#include "BLI_math.h"
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#include "BLI_utildefines.h"
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DisplaceSimpleOperation::DisplaceSimpleOperation() : NodeOperation()
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{
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this->addInputSocket(COM_DT_COLOR);
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this->addInputSocket(COM_DT_VECTOR);
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this->addInputSocket(COM_DT_VALUE);
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this->addInputSocket(COM_DT_VALUE);
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this->addOutputSocket(COM_DT_COLOR);
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this->m_inputColorProgram = NULL;
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this->m_inputVectorProgram = NULL;
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this->m_inputScaleXProgram = NULL;
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this->m_inputScaleYProgram = NULL;
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}
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void DisplaceSimpleOperation::initExecution()
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{
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this->m_inputColorProgram = this->getInputSocketReader(0);
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this->m_inputVectorProgram = this->getInputSocketReader(1);
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this->m_inputScaleXProgram = this->getInputSocketReader(2);
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this->m_inputScaleYProgram = this->getInputSocketReader(3);
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this->m_width_x4 = this->getWidth() * 4;
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this->m_height_x4 = this->getHeight() * 4;
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}
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/* minimum distance (in pixels) a pixel has to be displaced
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* in order to take effect */
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// #define DISPLACE_EPSILON 0.01f
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void DisplaceSimpleOperation::executePixelSampled(float output[4],
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float x,
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float y,
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PixelSampler sampler)
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{
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float inVector[4];
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float inScale[4];
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float p_dx, p_dy; /* main displacement in pixel space */
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float u, v;
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this->m_inputScaleXProgram->readSampled(inScale, x, y, sampler);
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float xs = inScale[0];
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this->m_inputScaleYProgram->readSampled(inScale, x, y, sampler);
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float ys = inScale[0];
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/* clamp x and y displacement to triple image resolution -
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* to prevent hangs from huge values mistakenly plugged in eg. z buffers */
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CLAMP(xs, -this->m_width_x4, this->m_width_x4);
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CLAMP(ys, -this->m_height_x4, this->m_height_x4);
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this->m_inputVectorProgram->readSampled(inVector, x, y, sampler);
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p_dx = inVector[0] * xs;
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p_dy = inVector[1] * ys;
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/* displaced pixel in uv coords, for image sampling */
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/* clamp nodes to avoid glitches */
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u = x - p_dx + 0.5f;
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v = y - p_dy + 0.5f;
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CLAMP(u, 0.0f, this->getWidth() - 1.0f);
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CLAMP(v, 0.0f, this->getHeight() - 1.0f);
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this->m_inputColorProgram->readSampled(output, u, v, sampler);
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}
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void DisplaceSimpleOperation::deinitExecution()
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{
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this->m_inputColorProgram = NULL;
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this->m_inputVectorProgram = NULL;
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this->m_inputScaleXProgram = NULL;
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this->m_inputScaleYProgram = NULL;
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}
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bool DisplaceSimpleOperation::determineDependingAreaOfInterest(rcti *input,
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ReadBufferOperation *readOperation,
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rcti *output)
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{
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rcti colorInput;
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NodeOperation *operation = NULL;
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/* the vector buffer only needs a 2x2 buffer. The image needs whole buffer */
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/* image */
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operation = getInputOperation(0);
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colorInput.xmax = operation->getWidth();
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colorInput.xmin = 0;
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colorInput.ymax = operation->getHeight();
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colorInput.ymin = 0;
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if (operation->determineDependingAreaOfInterest(&colorInput, readOperation, output)) {
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return true;
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}
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/* vector */
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if (operation->determineDependingAreaOfInterest(input, readOperation, output)) {
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return true;
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}
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/* scale x */
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operation = getInputOperation(2);
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if (operation->determineDependingAreaOfInterest(input, readOperation, output)) {
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return true;
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}
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/* scale y */
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operation = getInputOperation(3);
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if (operation->determineDependingAreaOfInterest(input, readOperation, output)) {
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return true;
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}
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return false;
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}
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