-#ifndef VECTOR_H
-#define VECTOR_H
+#pragma once
noref vector _vlen2;
-#define vlen2(v) \
- (_vlen2 = (v), \
- _vlen2.x * _vlen2.x \
- + _vlen2.y * _vlen2.y \
- + _vlen2.z * _vlen2.z)
+#define vlen2(v) (_vlen2 = (v), dotproduct(_vlen2, _vlen2))
+#if 1
noref float _vdist_f;
/** Vector distance comparison, avoids sqrt() */
#define vdist(v, cmp, f) (vlen2(v) cmp (_vdist_f = (f), _vdist_f * _vdist_f))
-/*
+#else
#define vdist(v, cmp, f) (vlen(v) cmp (f))
-*/
+#endif
+
+#if 1
+#define dotproduct(a, b) ((a) * (b))
+#else
+noref vector _dotproduct_a, _dotproduct_b;
+#define dotproduct(a, b) \
+ (_dotproduct_a = (a), _dotproduct_b = (b), \
+ _dotproduct_a.x * _dotproduct_b.x \
+ + _dotproduct_a.y * _dotproduct_b.y \
+ + _dotproduct_a.z * _dotproduct_b.z)
+#endif
+#if 1
#define cross(a, b) ((a) >< (b))
-/*
+#else
vector cross(vector a, vector b)
{
return
+ '0 1 0' * (a.z * b.x - a.x * b.z)
+ '0 0 1' * (a.x * b.y - a.y * b.x);
}
-*/
+#endif
const vector eX = '1 0 0';
const vector eY = '0 1 0';
} MACRO_END
noref vector _vec2;
-#define vec2(v) (_vec2 = (v), _vec2.z = 0, _vec2)
+#define vec2(...) EVAL(OVERLOAD(vec2, __VA_ARGS__))
+#define vec2_1(v) (_vec2 = (v), _vec2.z = 0, _vec2)
+#define vec2_2(x, y) (_vec2_x = (x), _vec2_y = (y), _vec2)
noref vector _vec3;
-#define vec3(x, y, z) (_vec3_x = (x), _vec3_y = (y), _vec3_z = (z), _vec3)
+#define vec3(_x, _y, _z) (_vec3.x = (_x), _vec3.y = (_y), _vec3.z = (_z), _vec3)
vector rotate(vector v, float a)
{
noref vector _yinvert;
#define yinvert(v) (_yinvert = (v), _yinvert.y = 1 - _yinvert.y, _yinvert)
+/**
+ * @param dir the directional vector
+ * @param norm the normalized normal
+ * @returns dir reflected by norm
+ */
+vector reflect(vector dir, vector norm)
+{
+ return dir - 2 * (dir * norm) * norm;
+}
+
#ifndef MENUQC
vector get_corner_position(entity box, int corner)
{
return ret;
}
#endif
-
-#endif