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/*
* 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 "BLI_color.hh"
#include "BLI_float2.hh"
#include "BLI_float3.hh"
#include "DNA_customdata_types.h"
namespace blender::attribute_math {
/**
* Utility function that simplifies calling a templated function based on a custom data type.
*/
template<typename Func>
void convert_to_static_type(const CustomDataType data_type, const Func &func)
{
switch (data_type) {
case CD_PROP_FLOAT:
func(float());
break;
case CD_PROP_FLOAT2:
func(float2());
break;
case CD_PROP_FLOAT3:
func(float3());
break;
case CD_PROP_INT32:
func(int());
break;
case CD_PROP_BOOL:
func(bool());
break;
case CD_PROP_COLOR:
func(Color4f());
break;
default:
BLI_assert(false);
break;
}
}
/* Interpolate between three values. */
template<typename T> T mix3(const float3 &weights, const T &v0, const T &v1, const T &v2);
template<> inline bool mix3(const float3 &weights, const bool &v0, const bool &v1, const bool &v2)
{
return (weights.x * v0 + weights.y * v1 + weights.z * v2) >= 0.5f;
}
template<> inline int mix3(const float3 &weights, const int &v0, const int &v1, const int &v2)
{
return static_cast<int>(weights.x * v0 + weights.y * v1 + weights.z * v2);
}
template<>
inline float mix3(const float3 &weights, const float &v0, const float &v1, const float &v2)
{
return weights.x * v0 + weights.y * v1 + weights.z * v2;
}
template<>
inline float2 mix3(const float3 &weights, const float2 &v0, const float2 &v1, const float2 &v2)
{
return weights.x * v0 + weights.y * v1 + weights.z * v2;
}
template<>
inline float3 mix3(const float3 &weights, const float3 &v0, const float3 &v1, const float3 &v2)
{
return weights.x * v0 + weights.y * v1 + weights.z * v2;
}
template<>
inline Color4f mix3(const float3 &weights, const Color4f &v0, const Color4f &v1, const Color4f &v2)
{
Color4f result;
interp_v4_v4v4v4(result, v0, v1, v2, weights);
return result;
}
} // namespace blender::attribute_math
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