diff options
Diffstat (limited to 'core')
| -rw-r--r-- | core/math/expression.cpp | 8 | ||||
| -rw-r--r-- | core/math/expression.h | 1 | ||||
| -rw-r--r-- | core/math/math_funcs.h | 11 |
3 files changed, 20 insertions, 0 deletions
diff --git a/core/math/expression.cpp b/core/math/expression.cpp index 99251d80e3..6580a25314 100644 --- a/core/math/expression.cpp +++ b/core/math/expression.cpp @@ -68,6 +68,7 @@ const char *Expression::func_name[Expression::FUNC_MAX] = { "lerp", "inverse_lerp", "range_lerp", + "smoothstep", "dectime", "randomize", "randi", @@ -185,6 +186,7 @@ int Expression::get_func_argument_count(BuiltinFunc p_func) { return 2; case MATH_LERP: case MATH_INVERSE_LERP: + case MATH_SMOOTHSTEP: case MATH_DECTIME: case MATH_WRAP: case MATH_WRAPF: @@ -392,6 +394,12 @@ void Expression::exec_func(BuiltinFunc p_func, const Variant **p_inputs, Variant VALIDATE_ARG_NUM(4); *r_return = Math::range_lerp((double)*p_inputs[0], (double)*p_inputs[1], (double)*p_inputs[2], (double)*p_inputs[3], (double)*p_inputs[4]); } break; + case MATH_SMOOTHSTEP: { + VALIDATE_ARG_NUM(0); + VALIDATE_ARG_NUM(1); + VALIDATE_ARG_NUM(2); + *r_return = Math::smoothstep((double)*p_inputs[0], (double)*p_inputs[1], (double)*p_inputs[2]); + } break; case MATH_DECTIME: { VALIDATE_ARG_NUM(0); diff --git a/core/math/expression.h b/core/math/expression.h index fa0878c93c..f9075cb689 100644 --- a/core/math/expression.h +++ b/core/math/expression.h @@ -66,6 +66,7 @@ public: MATH_LERP, MATH_INVERSE_LERP, MATH_RANGE_LERP, + MATH_SMOOTHSTEP, MATH_DECTIME, MATH_RANDOMIZE, MATH_RAND, diff --git a/core/math/math_funcs.h b/core/math/math_funcs.h index 17112d8940..dcfbe94364 100644 --- a/core/math/math_funcs.h +++ b/core/math/math_funcs.h @@ -208,6 +208,17 @@ public: static _ALWAYS_INLINE_ double range_lerp(double p_value, double p_istart, double p_istop, double p_ostart, double p_ostop) { return Math::lerp(p_ostart, p_ostop, Math::inverse_lerp(p_istart, p_istop, p_value)); } static _ALWAYS_INLINE_ float range_lerp(float p_value, float p_istart, float p_istop, float p_ostart, float p_ostop) { return Math::lerp(p_ostart, p_ostop, Math::inverse_lerp(p_istart, p_istop, p_value)); } + static _ALWAYS_INLINE_ double smoothstep(double p_from, double p_to, double p_weight) { + if (is_equal_approx(p_from, p_to)) return p_from; + double x = CLAMP((p_weight - p_from) / (p_to - p_from), 0.0, 1.0); + return x * x * (3.0 - 2.0 * x); + } + static _ALWAYS_INLINE_ float smoothstep(float p_from, float p_to, float p_weight) { + if (is_equal_approx(p_from, p_to)) return p_from; + float x = CLAMP((p_weight - p_from) / (p_to - p_from), 0.0f, 1.0f); + return x * x * (3.0f - 2.0f * x); + } + static _ALWAYS_INLINE_ double linear2db(double p_linear) { return Math::log(p_linear) * 8.6858896380650365530225783783321; } static _ALWAYS_INLINE_ float linear2db(float p_linear) { return Math::log(p_linear) * 8.6858896380650365530225783783321; } |