Initial commit

2026-04-18 11:05:46 +03:00
commit 415ec3ecd3
24 changed files with 2234 additions and 0 deletions
--- a/Vec4f.c
+++ b/Vec4f.c
@@ -0,0 +1,108 @@
+#include "CgeMath.h"
+#include <math.h>
+
+#define SET_ROW(row, val) row[0] = row[1] = row[2] = row[3] = val
+
+void CgeVec4fAdd(const float a[4], const float b[4], float out[4]) {
+    out[0] = a[0] + b[0];
+    out[1] = a[1] + b[1];
+    out[2] = a[2] + b[2];
+    out[3] = a[3] + b[3];
+}
+
+void CgeVec4fSub(const float a[4], const float b[4], float out[4]) {
+    out[0] = a[0] - b[0];
+    out[1] = a[1] - b[1];
+    out[2] = a[2] - b[2];
+    out[3] = a[3] - b[3];
+}
+
+void CgeVec4fMul(const float a[4], const float b[4], float out[4]) {
+    out[0] = a[0] * b[0];
+    out[1] = a[1] * b[1];
+    out[2] = a[2] * b[2];
+    out[3] = a[3] * b[3];
+}
+
+void CgeVec4fScale(const float a[4], float b, float out[4]) {
+    out[0] = a[0] * b;
+    out[1] = a[1] * b;
+    out[2] = a[2] * b;
+    out[3] = a[3] * b;
+}
+
+void CgeVec4fMulAdd(const float a[4], const float b[4], const float c[4],
+                    float out[4]) {
+    out[0] = a[0] * b[0] + c[0];
+    out[1] = a[1] * b[1] + c[1];
+    out[2] = a[2] * b[2] + c[2];
+    out[3] = a[3] * b[3] + c[3];
+}
+
+void CgeVec4fNegate(const float in[4], float out[4]) {
+    out[0] = -in[0];
+    out[1] = -in[1];
+    out[2] = -in[2];
+    out[3] = -in[3];
+}
+
+float CgeVec4fDot(const float a[4], const float b[4]) {
+    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+}
+
+float CgeVec4fLength(const float in[4]) {
+    return sqrtf(CgeVec4fDot(in, in));
+}
+
+void CgeVec4fNormal(const float in[4],
+                    float out[4]) {
+    CgeVec4fScale(in, 1.0f / CgeVec4fLength(in), out);
+}
+
+float CgeVec4fNormalEx(const float in[4], float out[4]) {
+    float length;
+
+    length = CgeVec4fLength(in);
+    CgeVec4fScale(in, 1.0f / length, out);
+    return length;
+}
+
+void CgeVec4fMin(const float a[4], const float b[4], float out[4]) {
+    if (a[0] < b[0]) out[0] = a[0]; else out[0] = b[0];
+    if (a[1] < b[1]) out[1] = a[1]; else out[1] = b[1];
+    if (a[2] < b[2]) out[2] = a[2]; else out[2] = b[2];
+    if (a[3] < b[3]) out[3] = a[3]; else out[3] = b[3];
+}
+
+void CgeVec4fMax(const float a[4], const float b[4], float out[4]) {
+    if (a[0] > b[0]) out[0] = a[0]; else out[0] = b[0];
+    if (a[1] > b[1]) out[1] = a[1]; else out[1] = b[1];
+    if (a[2] > b[2]) out[2] = a[2]; else out[2] = b[2];
+    if (a[3] > b[3]) out[3] = a[3]; else out[3] = b[3];
+}
+
+void CgeVec4fLerp(const float a[4], const float b[4], float t, float out[4]) {
+    float tmp[4];
+
+    CgeVec4fSub(b, a, tmp);
+    CgeVec4fScale(tmp, t, tmp);
+    CgeVec4fAdd(a, tmp, out);
+}
+
+void CgeVec4fProject(const float a[4], const float b[4], float out[4]) {
+    float amount;
+
+    amount = CgeVec4fDot(a, b) / CgeVec4fDot(b, b);
+    CgeVec4fScale(b, amount, out);
+}
+
+void CgeVec4fBarycentric(const float a[4], const float b[4], const float c[4],
+                         float v, float w, float out[4]) {
+    float tmp1[4], tmp2[4];
+    float u;
+
+    u = 1.0f - v - w;
+    SET_ROW(tmp1, u); CgeVec4fMul(a, tmp1, tmp2);
+    SET_ROW(tmp1, v); CgeVec4fMulAdd(b, tmp1, tmp2, tmp2);
+    SET_ROW(tmp1, w); CgeVec4fMulAdd(c, tmp1, tmp2, out);
+}