1 files changed, 111 insertions, 0 deletions
diff --git a/libs/pwyazh/v3f.h b/libs/pwyazh/v3f.h
new file mode 100644
index 0000000..ba2e140
--- /dev/null
+++ b/libs/pwyazh/v3f.h
@@ -0,0 +1,111 @@
+#ifndef V3F_H
+#define V3F_H
+
+V3F
+v3f(F32 x, F32 y, F32 z)
+{
+    V3F result = { x, y, z };
+    return(result);
+}
+
+V3F
+v3f_zero()
+{
+    V3F result = { 0.0f, 0.0f, 0.0f };
+    return(result);
+}
+
+V3F
+v3f_one()
+{
+    V3F result = { 1.0f, 1.0f, 1.0f };
+    return(result);
+}
+
+V3F
+v3f_negate(V3F a)
+{
+    V3F result = { -a.x, -a.y, -a.z };
+    return(result);
+}
+
+V3F
+v3f_add(V3F a, V3F b)
+{
+    V3F result = { a.x+b.x, a.y+b.y, a.z+b.z };
+    return(result);
+}
+
+V3F
+v3f_sub(V3F a, V3F b)
+{
+    V3F result = { a.x-b.x, a.y-b.y, a.z-b.z };
+    return(result);
+}
+
+V3F
+v3f_scalef(V3F a, F32 scale)
+{
+    V3F result = { a.x*scale, a.y*scale, a.z*scale };
+    return(result);
+}
+
+V3F
+v3f_scalev(V3F a, V3F scale)
+{
+    V3F result = { a.x*scale.x, a.y*scale.y, a.z*scale.z };
+    return(result);
+}
+
+F32
+v3f_length2(V3F a)
+{
+    F32 result = a.x*a.x+a.y*a.y+a.z*a.z;
+    return(result);
+}
+
+F32
+v3f_length(V3F a)
+{
+    F32 result = f32_sqrt(v3f_length2(a));
+    return(result);
+}
+
+V3F
+v3f_norm(V3F a)
+{
+    F32 length = v3f_length(a);
+    V3F result = v3f_zero();
+    if (length) {
+        result = v3f(a.x/length, a.y/length, a.z/length);
+    }
+    return(result);
+}
+
+V3F
+v3f_dot(V3F a, V3F b)
+{
+    V3F result;
+    result.x = a.x*b.x;
+    result.y = a.y*b.y;
+    result.z = a.z*b.z;
+    return(result);
+}
+
+V3F
+v3f_cross(V3F left, V3F right)
+{
+    V3F result;
+    result.x = (left.y*right.z-right.y*left.z);
+    result.y = (right.x*left.z-left.x*right.z);
+    result.z = (left.x*right.y-right.x*left.y);
+    return(result);
+}
+
+void
+v3f_print(V3F a)
+{
+    printf("[%4.4f\n%4.4f\n%4.4f]\n\n", a.x, a.y, a.z);
+}
+
+#endif /* V3F_H */