diff options
Diffstat (limited to 'source/blender/blenkernel/BKE_attribute_math.hh')
-rw-r--r-- | source/blender/blenkernel/BKE_attribute_math.hh | 82 |
1 files changed, 79 insertions, 3 deletions
diff --git a/source/blender/blenkernel/BKE_attribute_math.hh b/source/blender/blenkernel/BKE_attribute_math.hh index 16fc0db60fb..0afdc436415 100644 --- a/source/blender/blenkernel/BKE_attribute_math.hh +++ b/source/blender/blenkernel/BKE_attribute_math.hh @@ -14,6 +14,8 @@ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ +#pragma once + #include "BLI_array.hh" #include "BLI_color.hh" #include "BLI_float2.hh" @@ -21,13 +23,17 @@ #include "DNA_customdata_types.h" +#include "FN_cpp_type.hh" + namespace blender::attribute_math { +using fn::CPPType; + /** * 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) +inline void convert_to_static_type(const CustomDataType data_type, const Func &func) { switch (data_type) { case CD_PROP_FLOAT: @@ -54,6 +60,32 @@ void convert_to_static_type(const CustomDataType data_type, const Func &func) } } +template<typename Func> +inline void convert_to_static_type(const fn::CPPType &cpp_type, const Func &func) +{ + if (cpp_type.is<float>()) { + func(float()); + } + else if (cpp_type.is<float2>()) { + func(float2()); + } + else if (cpp_type.is<float3>()) { + func(float3()); + } + else if (cpp_type.is<int>()) { + func(int()); + } + else if (cpp_type.is<bool>()) { + func(bool()); + } + else if (cpp_type.is<Color4f>()) { + func(Color4f()); + } + else { + BLI_assert_unreachable(); + } +} + /* -------------------------------------------------------------------- */ /** \name Mix three values of the same type. * @@ -101,6 +133,48 @@ inline Color4f mix3(const float3 &weights, const Color4f &v0, const Color4f &v1, /** \} */ /* -------------------------------------------------------------------- */ +/** \name Mix two values of the same type. + * + * This is just basic linear interpolation. + * \{ */ + +template<typename T> T mix2(const float factor, const T &a, const T &b); + +template<> inline bool mix2(const float factor, const bool &a, const bool &b) +{ + return ((1.0f - factor) * a + factor * b) >= 0.5f; +} + +template<> inline int mix2(const float factor, const int &a, const int &b) +{ + return static_cast<int>((1.0f - factor) * a + factor * b); +} + +template<> inline float mix2(const float factor, const float &a, const float &b) +{ + return (1.0f - factor) * a + factor * b; +} + +template<> inline float2 mix2(const float factor, const float2 &a, const float2 &b) +{ + return float2::interpolate(a, b, factor); +} + +template<> inline float3 mix2(const float factor, const float3 &a, const float3 &b) +{ + return float3::interpolate(a, b, factor); +} + +template<> inline Color4f mix2(const float factor, const Color4f &a, const Color4f &b) +{ + Color4f result; + interp_v4_v4v4(result, a, b, factor); + return result; +} + +/** \} */ + +/* -------------------------------------------------------------------- */ /** \name Mix a dynamic amount of values with weights for many elements. * * This section provides an abstraction for "mixers". The abstraction encapsulates details about @@ -153,8 +227,10 @@ template<typename T> class SimpleMixer { } }; -/** This mixer accumulates values in a type that is different from the one that is mixed. Some - * types cannot encode the floating point weights in their values (e.g. int and bool). */ +/** + * This mixer accumulates values in a type that is different from the one that is mixed. + * Some types cannot encode the floating point weights in their values (e.g. int and bool). + */ template<typename T, typename AccumulationT, T (*ConvertToT)(const AccumulationT &value)> class SimpleMixerWithAccumulationType { private: |