da376e0237
Cycles uses code from some great open source projects, many thanks them: * BVH building and traversal code from NVidia's "Understanding the Efficiency of Ray Traversal on GPUs": http://code.google.com/p/understanding-the-efficiency-of-ray-traversal-on-gpus/ * Open Shading Language for a large part of the shading system: http://code.google.com/p/openshadinglanguage/ * Blender for procedural textures and a few other nodes. * Approximate Catmull Clark subdivision from NVidia Mesh tools: http://code.google.com/p/nvidia-mesh-tools/ * Sobol direction vectors from: http://web.maths.unsw.edu.au/~fkuo/sobol/ * Film response functions from: http://www.cs.columbia.edu/CAVE/software/softlib/dorf.php
104 lines
2.1 KiB
C++
104 lines
2.1 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.
|
|
*/
|
|
|
|
#include "subd_stencil.h"
|
|
|
|
#include "util_debug.h"
|
|
#include "util_math.h"
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
StencilMask::StencilMask()
|
|
{
|
|
}
|
|
|
|
StencilMask::StencilMask(int size)
|
|
{
|
|
/* initialize weights to zero. */
|
|
weights.resize(size, 0.0f);
|
|
}
|
|
|
|
void StencilMask::resize(int size)
|
|
{
|
|
weights.resize(size, 0.0f);
|
|
}
|
|
|
|
StencilMask& StencilMask::operator=(float value)
|
|
{
|
|
const int size = weights.size();
|
|
for(int i = 0; i < size; i++)
|
|
weights[i] = value;
|
|
|
|
return *this;
|
|
}
|
|
|
|
void StencilMask::operator+=(const StencilMask& mask)
|
|
{
|
|
assert(mask.size() == size());
|
|
|
|
const int size = weights.size();
|
|
for(int i = 0; i < size; i++)
|
|
weights[i] += mask.weights[i];
|
|
}
|
|
|
|
void StencilMask::operator-=(const StencilMask& mask)
|
|
{
|
|
assert(mask.size() == size());
|
|
|
|
const int size = weights.size();
|
|
for(int i = 0; i < size; i++)
|
|
weights[i] -= mask.weights[i];
|
|
}
|
|
|
|
void StencilMask::operator*=(float scale)
|
|
{
|
|
const int size = weights.size();
|
|
|
|
for(int i = 0; i < size; i++)
|
|
weights[i] *= scale;
|
|
}
|
|
|
|
void StencilMask::operator/=(float scale)
|
|
{
|
|
*this *= 1.0f/scale;
|
|
}
|
|
|
|
float StencilMask::sum() const
|
|
{
|
|
float total = 0.0f;
|
|
const int size = weights.size();
|
|
|
|
for(int i = 0; i < size; i++)
|
|
total += weights[i];
|
|
|
|
return total;
|
|
}
|
|
|
|
bool StencilMask::is_normalized() const
|
|
{
|
|
return fabsf(sum() - 1.0f) < 0.0001f;
|
|
}
|
|
|
|
void StencilMask::normalize()
|
|
{
|
|
*this /= sum();
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|
|
|