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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_EllipseMaskOperation.h"
#include "BLI_math.h"
#include "DNA_node_types.h"
EllipseMaskOperation::EllipseMaskOperation(): NodeOperation() {
this->addInputSocket(COM_DT_VALUE);
this->addInputSocket(COM_DT_VALUE);
this->addOutputSocket(COM_DT_VALUE);
this->inputMask = NULL;
this->inputValue = NULL;
this->cosine = 0.0f;
this->sine = 0.0f;
}
void EllipseMaskOperation::initExecution() {
this->inputMask = this->getInputSocketReader(0);
this->inputValue = this->getInputSocketReader(1);
const double rad = DEG2RAD(this->data->rotation);
this->cosine = cos(rad);
this->sine = sin(rad);
this->aspectRatio = ((float)this->getWidth())/this->getHeight();
}
void EllipseMaskOperation::executePixel(float* color, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) {
float inputMask[4];
float inputValue[4];
float rx = x/this->getWidth();
float ry = y/this->getHeight();
const float dy = (ry - this->data->y)/this->aspectRatio;
const float dx = rx - this->data->x;
rx = this->data->x+(this->cosine*dx + this->sine*dy);
ry = this->data->y+(-this->sine*dx + this->cosine*dy);
this->inputMask->read(inputMask, x, y, sampler, inputBuffers);
this->inputValue->read(inputValue, x, y, sampler, inputBuffers);
const float halfHeight = (this->data->height)/2.0f;
const float halfWidth = this->data->width/2.0f;
float sx = rx-this->data->x;
sx *= sx;
const float tx = halfWidth * halfWidth;
float sy = ry-this->data->y;
sy *= sy;
const float ty = halfHeight * halfHeight;
bool inside = ((sx/tx)+(sy/ty))<1.0f;
switch (this->maskType) {
case CMP_NODE_MASKTYPE_ADD:
if (inside) {
color[0] = max(inputMask[0],inputValue[0]);
}
else {
color[0] = inputMask[0];
}
break;
case CMP_NODE_MASKTYPE_SUBTRACT:
if (inside) {
color[0] = inputMask[0]-inputValue[0];
CLAMP(color[0], 0, 1);
}
else {
color[0] = inputMask[0];
}
break;
case CMP_NODE_MASKTYPE_MULTIPLY:
if (inside) {
color[0] = inputMask[0]*inputValue[0];
}
else {
color[0] = 0;
}
break;
case CMP_NODE_MASKTYPE_NOT:
if (inside) {
if (inputMask[0]>0.0f) {
color[0] = 0;
}
else {
color[0] = inputValue[0];
}
}
else {
color[0] = inputMask[0];
}
break;
}
}
void EllipseMaskOperation::deinitExecution() {
this->inputMask = NULL;
this->inputValue = NULL;
}
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