Differential D10300 Diff 33525 source/blender/blenkernel/BKE_attribute_math.hh

Changeset View

Standalone View

source/blender/blenkernel/BKE_attribute_math.hh

This file was added.

				/*
				* 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