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
112 lines
3.2 KiB
C++
112 lines
3.2 KiB
C++
/*
|
|
* 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
|
|
* Thomas Beck (plasmasolutions.de)
|
|
*/
|
|
|
|
#include "COM_WrapOperation.h"
|
|
|
|
WrapOperation::WrapOperation() : ReadBufferOperation()
|
|
{
|
|
this->m_wrappingType = CMP_NODE_WRAP_NONE;
|
|
}
|
|
|
|
inline float WrapOperation::getWrappedOriginalXPos(float x)
|
|
{
|
|
if (this->getWidth() == 0) return 0;
|
|
while (x < 0) x += this->m_width;
|
|
return fmodf(x, this->getWidth());
|
|
}
|
|
|
|
inline float WrapOperation::getWrappedOriginalYPos(float y)
|
|
{
|
|
if (this->getHeight() == 0) return 0;
|
|
while (y < 0) y += this->m_height;
|
|
return fmodf(y, this->getHeight());
|
|
}
|
|
|
|
void WrapOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
|
|
{
|
|
float nx, ny;
|
|
nx = x;
|
|
ny = y;
|
|
MemoryBufferExtend extend_x = COM_MB_CLIP, extend_y = COM_MB_CLIP;
|
|
switch (m_wrappingType) {
|
|
case CMP_NODE_WRAP_NONE:
|
|
//Intentionally empty, originalXPos and originalYPos have been set before
|
|
break;
|
|
case CMP_NODE_WRAP_X:
|
|
// wrap only on the x-axis
|
|
nx = this->getWrappedOriginalXPos(x);
|
|
extend_x = COM_MB_REPEAT;
|
|
break;
|
|
case CMP_NODE_WRAP_Y:
|
|
// wrap only on the y-axis
|
|
ny = this->getWrappedOriginalYPos(y);
|
|
extend_y = COM_MB_REPEAT;
|
|
break;
|
|
case CMP_NODE_WRAP_XY:
|
|
// wrap on both
|
|
nx = this->getWrappedOriginalXPos(x);
|
|
ny = this->getWrappedOriginalYPos(y);
|
|
extend_x = COM_MB_REPEAT;
|
|
extend_y = COM_MB_REPEAT;
|
|
break;
|
|
}
|
|
|
|
executePixelExtend(output, nx, ny, sampler, extend_x, extend_y);
|
|
}
|
|
|
|
bool WrapOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
|
|
{
|
|
rcti newInput;
|
|
|
|
newInput.xmin = input->xmin;
|
|
newInput.xmax = input->xmax;
|
|
newInput.ymin = input->ymin;
|
|
newInput.ymax = input->ymax;
|
|
|
|
if (m_wrappingType == 1 || m_wrappingType == 3) {
|
|
// wrap only on the x-axis if tile is wrapping
|
|
newInput.xmin = getWrappedOriginalXPos(input->xmin);
|
|
newInput.xmax = getWrappedOriginalXPos(input->xmax);
|
|
if (newInput.xmin > newInput.xmax) {
|
|
newInput.xmin = 0;
|
|
newInput.xmax = this->getWidth();
|
|
}
|
|
}
|
|
if (m_wrappingType == 2 || m_wrappingType == 3) {
|
|
// wrap only on the y-axis if tile is wrapping
|
|
newInput.ymin = getWrappedOriginalYPos(input->ymin);
|
|
newInput.ymax = getWrappedOriginalYPos(input->ymax);
|
|
if (newInput.ymin > newInput.ymax) {
|
|
newInput.ymin = 0;
|
|
newInput.ymax = this->getHeight();
|
|
}
|
|
}
|
|
|
|
return ReadBufferOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
|
|
}
|
|
|
|
void WrapOperation::setWrapping(int wrapping_type)
|
|
{
|
|
m_wrappingType = wrapping_type;
|
|
}
|