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/*
* Copyright 2011, Blender Foundation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contributor:
* Jeroen Bakker
* Monique Dewanchand
*/
#include "COM_TextureOperation.h"
#include "BLI_listbase.h"
TextureBaseOperation::TextureBaseOperation() : NodeOperation()
{
this->addInputSocket(COM_DT_VECTOR); //offset
this->addInputSocket(COM_DT_VECTOR); //size
this->m_texture = NULL;
this->m_inputSize = NULL;
this->m_inputOffset = NULL;
this->m_rd = NULL;
}
TextureOperation::TextureOperation() : TextureBaseOperation()
{
this->addOutputSocket(COM_DT_COLOR);
}
TextureAlphaOperation::TextureAlphaOperation() : TextureBaseOperation()
{
this->addOutputSocket(COM_DT_VALUE);
}
void TextureBaseOperation::initExecution()
{
this->m_inputOffset = getInputSocketReader(0);
this->m_inputSize = getInputSocketReader(1);
}
void TextureBaseOperation::deinitExecution()
{
this->m_inputSize = NULL;
this->m_inputOffset = NULL;
}
void TextureBaseOperation::determineResolution(unsigned int resolution[2], unsigned int preferredResolution[2])
{
if (preferredResolution[0] == 0 || preferredResolution[1] == 0) {
int width = this->m_rd->xsch * this->m_rd->size / 100;
int height = this->m_rd->ysch * this->m_rd->size / 100;
resolution[0] = width;
resolution[1] = height;
}
else {
resolution[0] = preferredResolution[0];
resolution[1] = preferredResolution[1];
}
}
void TextureAlphaOperation::executePixel(float *color, float x, float y, PixelSampler sampler)
{
TextureBaseOperation::executePixel(color, x, y, sampler);
color[0] = color[3];
color[1] = 0.0f;
color[2] = 0.0f;
color[3] = 0.0f;
}
void TextureBaseOperation::executePixel(float *color, float x, float y, PixelSampler sampler)
{
TexResult texres = {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, NULL};
float textureSize[4];
float textureOffset[4];
float vec[3];
int retval;
const float cx = this->getWidth() / 2;
const float cy = this->getHeight() / 2;
const float u = (cx - x) / this->getWidth() * 2;
const float v = (cy - y) / this->getHeight() * 2;
this->m_inputSize->read(textureSize, x, y, sampler);
this->m_inputOffset->read(textureOffset, x, y, sampler);
vec[0] = textureSize[0] * (u + textureOffset[0]);
vec[1] = textureSize[1] * (v + textureOffset[1]);
vec[2] = textureSize[2] * textureOffset[2];
retval = multitex_ext(this->m_texture, vec, NULL, NULL, 0, &texres);
if (texres.talpha)
color[3] = texres.ta;
else
color[3] = texres.tin;
if ((retval & TEX_RGB)) {
color[0] = texres.tr;
color[1] = texres.tg;
color[2] = texres.tb;
}
else color[0] = color[1] = color[2] = color[3];
}
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