Add LERP(a, b, x) macro

maximecb · Nov 30, 2023 · 845a68f · 845a68f
1 parent aef97d4
commit 845a68f
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/ncc/include/uvm/math.h b/ncc/include/uvm/math.h
@@ -1,8 +1,6 @@
 #ifndef __UVM_MATH_H__
 #define __UVM_MATH_H__
 
-//#include <assert.h>
-
 // Minimum of two values
 #ifndef MIN
 #define MIN(a, b) (a < b? a:b)
@@ -18,6 +16,11 @@
 #define CLAMP(x, min, max) MIN(MAX(x, min), max)
 #endif
 
+// Linear interpolation between two values
+#ifndef LERP
+#define LERP(a, b, x) ((1 - x) * a + (x * b))
+#define LERP
+
 // Remap a value from range [a0, a1] into range [b0, b1]
 #ifndef REMAP
 #define REMAP(v, a0, a1, b0, b1) (b0 + (b1 - b0) * ((v) - a0) / (a1 - a0))