124 lines
3.2 KiB
C++
124 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_EllipseMaskOperation.h"
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#include "BLI_math.h"
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#include "DNA_node_types.h"
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EllipseMaskOperation::EllipseMaskOperation() : 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 EllipseMaskOperation::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 EllipseMaskOperation::executePixel(float *color, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[])
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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->read(inputMask, x, y, sampler, inputBuffers);
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this->m_inputValue->read(inputValue, x, y, sampler, inputBuffers);
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const float halfHeight = (this->m_data->height) / 2.0f;
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const float halfWidth = this->m_data->width / 2.0f;
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float sx = rx - this->m_data->x;
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sx *= sx;
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const float tx = halfWidth * halfWidth;
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float sy = ry - this->m_data->y;
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sy *= sy;
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const float ty = halfHeight * halfHeight;
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bool inside = ((sx / tx) + (sy / ty)) < 1.0f;
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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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color[0] = max(inputMask[0], inputValue[0]);
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}
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else {
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color[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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color[0] = inputMask[0] - inputValue[0];
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CLAMP(color[0], 0, 1);
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}
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else {
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color[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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color[0] = inputMask[0] * inputValue[0];
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}
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else {
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color[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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color[0] = 0;
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}
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else {
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color[0] = inputValue[0];
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}
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}
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else {
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color[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 EllipseMaskOperation::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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