Lukas Tönne
c566e408e4
Distinguish the 3 different methods for acquiring pixel color values (executePixel, executePixelSampled, executePixelFiltered). This makes it easier to keep track of the different sampling methods (and works nicer with IDEs that do code parsing). Differential Revision: http://developer.blender.org/D7
120 lines
3.2 KiB
C++
120 lines
3.2 KiB
C++
/*
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* Copyright 2011, Blender Foundation.
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*
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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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* Contributor:
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* Jeroen Bakker
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* Monique Dewanchand
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*/
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#include "COM_BoxMaskOperation.h"
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#include "BLI_math.h"
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#include "DNA_node_types.h"
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BoxMaskOperation::BoxMaskOperation() : NodeOperation()
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{
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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_VALUE);
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this->m_inputMask = NULL;
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this->m_inputValue = NULL;
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this->m_cosine = 0.0f;
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this->m_sine = 0.0f;
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}
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void BoxMaskOperation::initExecution()
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{
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this->m_inputMask = this->getInputSocketReader(0);
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this->m_inputValue = this->getInputSocketReader(1);
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const double rad = DEG2RAD((double)this->m_data->rotation);
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this->m_cosine = cos(rad);
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this->m_sine = sin(rad);
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this->m_aspectRatio = ((float)this->getWidth()) / this->getHeight();
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}
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void BoxMaskOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
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{
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float inputMask[4];
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float inputValue[4];
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float rx = x / this->getWidth();
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float ry = y / this->getHeight();
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const float dy = (ry - this->m_data->y) / this->m_aspectRatio;
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const float dx = rx - this->m_data->x;
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rx = this->m_data->x + (this->m_cosine * dx + this->m_sine * dy);
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ry = this->m_data->y + (-this->m_sine * dx + this->m_cosine * dy);
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this->m_inputMask->readSampled(inputMask, x, y, sampler);
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this->m_inputValue->readSampled(inputValue, x, y, sampler);
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float halfHeight = this->m_data->height / 2.0f;
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float halfWidth = this->m_data->width / 2.0f;
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bool inside = (rx > this->m_data->x - halfWidth &&
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rx < this->m_data->x + halfWidth &&
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ry > this->m_data->y - halfHeight &&
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ry < this->m_data->y + halfHeight);
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switch (this->m_maskType) {
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case CMP_NODE_MASKTYPE_ADD:
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if (inside) {
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output[0] = max(inputMask[0], inputValue[0]);
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}
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else {
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output[0] = inputMask[0];
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}
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break;
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case CMP_NODE_MASKTYPE_SUBTRACT:
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if (inside) {
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output[0] = inputMask[0] - inputValue[0];
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CLAMP(output[0], 0, 1);
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}
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else {
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output[0] = inputMask[0];
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}
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break;
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case CMP_NODE_MASKTYPE_MULTIPLY:
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if (inside) {
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output[0] = inputMask[0] * inputValue[0];
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}
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else {
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output[0] = 0;
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}
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break;
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case CMP_NODE_MASKTYPE_NOT:
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if (inside) {
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if (inputMask[0] > 0.0f) {
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output[0] = 0;
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}
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else {
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output[0] = inputValue[0];
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}
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}
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else {
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output[0] = inputMask[0];
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}
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break;
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}
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}
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void BoxMaskOperation::deinitExecution()
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{
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this->m_inputMask = NULL;
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this->m_inputValue = NULL;
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}
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