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/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
#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
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