Initial commit

Misc.c

@@ -0,0 +1,27 @@
+#include "CgeMath.h"
+
+float CgeLerpf(float a, float b, float t) {
+    return a + (b - a) * t;
+}
+
+void CgeTriangle3fBarycentric(const float a[3], const float b[3],
+                              const float c[3], const float point[3],
+                              float out[3]) {
+    float tmp1[3], tmp2[3], tmp3[3];
+    float t11, t12, t22, t31, t32, denom;
+
+    CgeVec3fSub(b, a, tmp1);
+    CgeVec3fSub(c, a, tmp2);
+    CgeVec3fSub(point, a, tmp3);
+
+    t11 = CgeVec3fDot(tmp1, tmp1);
+    t12 = CgeVec3fDot(tmp1, tmp2);
+    t22 = CgeVec3fDot(tmp2, tmp2);
+    t31 = CgeVec3fDot(tmp3, tmp1);
+    t32 = CgeVec3fDot(tmp3, tmp2);
+    denom = 1.0f / (t11 * t22 - t12 * t12);
+
+    out[1] = (t22 * t31 - t12 * t32) * denom;
+    out[2] = (t11 * t32 - t12 * t31) * denom;
+    out[0] = 1.0f - out[1] - out[2];
+}