-#ifndef VECTOR_H
-#define VECTOR_H
+#pragma once
+noref vector _vlen2;
+#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';
return v;
}
-float vlen2d(vector v)
-{
- return sqrt(v.x * v.x + v.y * v.y);
-}
-
float vlen_maxnorm2d(vector v)
{
return max(v.x, v.y, -v.x, -v.y);
/** requires the same as boxesoverlap, but is a stronger condition */
float boxinsidebox(vector smins, vector smaxs, vector bmins, vector bmaxs) { return smins.x >= bmins.x && smaxs.x <= bmaxs.x && smins.y >= bmins.y && smaxs.y <= bmaxs.y && smins.z >= bmins.z && smaxs.z <= bmaxs.z; }
+#define PITCH(v) ((v).x)
+#define YAW(v) ((v).y)
+#define ROLL(v) ((v).z)
-vector vec2(vector v)
-{
- v.z = 0;
- return v;
-}
+#define MAKEVECTORS(f, angles, forward, right, up) MACRO_BEGIN { \
+ f(angles); \
+ forward = v_forward; \
+ right = v_right; \
+ up = v_up; \
+} MACRO_END
-vector vec3(float x, float y, float z)
-{
- vector v;
- v.x = x;
- v.y = y;
- v.z = z;
- return v;
-}
+noref vector _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)
vector rotate(vector v, float a)
{
return r;
}
-vector yinvert(vector v)
+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)
{
- v.y = 1 - v.y;
- return v;
+ return dir - 2 * (dir * norm) * norm;
}
#ifndef MENUQC
return ret;
}
#endif
-
-#endif