From e5d4a0c5596daaae14251872755df1e71e54e108 Mon Sep 17 00:00:00 2001 From: Germano Cavalcante Date: Wed, 4 Aug 2021 10:38:03 -0300 Subject: BLI: add double version of 'scaleform' No functional changes. New utility. --- source/blender/blenlib/BLI_math_base.h | 3 +++ source/blender/blenlib/intern/math_base_inline.c | 7 +++++++ 2 files changed, 10 insertions(+) (limited to 'source') diff --git a/source/blender/blenlib/BLI_math_base.h b/source/blender/blenlib/BLI_math_base.h index 88dc20a64f2..e877503e835 100644 --- a/source/blender/blenlib/BLI_math_base.h +++ b/source/blender/blenlib/BLI_math_base.h @@ -120,6 +120,9 @@ MINLINE double interpd(double a, double b, double t); MINLINE float ratiof(float min, float max, float pos); MINLINE double ratiod(double min, double max, double pos); +MINLINE float scalenorm(float a, float b, float x); +MINLINE double scalenormd(double a, double b, double x); + /* NOTE: Compilers will upcast all types smaller than int to int when performing arithmetic * operation. */ MINLINE int square_s(short a); diff --git a/source/blender/blenlib/intern/math_base_inline.c b/source/blender/blenlib/intern/math_base_inline.c index 6e3846e59c6..a80c495ecf3 100644 --- a/source/blender/blenlib/intern/math_base_inline.c +++ b/source/blender/blenlib/intern/math_base_inline.c @@ -199,6 +199,13 @@ MINLINE float scalenorm(float a, float b, float x) return (x * (b - a)) + a; } +/* Map a normalized value, i.e. from interval [0, 1] to interval [a, b]. */ +MINLINE double scalenormd(double a, double b, double x) +{ + BLI_assert(x <= 1 && x >= 0); + return (x * (b - a)) + a; +} + /* Used for zoom values. */ MINLINE float power_of_2(float val) { -- cgit v1.2.3