return min(max(v.x, -v.x), max(v.y, -v.y));
}
-ERASEABLE
-float dist_point_line(vector p, vector l0, vector ldir)
-{
- ldir = normalize(ldir);
-
- // remove the component in line direction
- p = p - (p * ldir) * ldir;
-
- // vlen of the remaining vector
- return vlen(p);
-}
-
/** requires that m2>m1 in all coordinates, and that m4>m3 */
ERASEABLE
float boxesoverlap(vector m1, vector m2, vector m3, vector m4) { return m2_x >= m3_x && m1_x <= m4_x && m2_y >= m3_y && m1_y <= m4_y && m2_z >= m3_z && m1_z <= m4_z; }
#define YAW(v) ((v).y)
#define ROLL(v) ((v).z)
-#define MAKEVECTORS(f, angles, forward, right, up) MACRO_BEGIN { \
- f(angles); \
- forward = v_forward; \
- right = v_right; \
- up = v_up; \
-} MACRO_END
-
//pseudo prototypes:
// vector vec2(vector v); // returns a vector with just the x and y components of the given vector
// vector vec2(float x, float y); // returns a vector with the given x and y components
noref vector _vec3;
#define vec3(_x, _y, _z) (_vec3.x = (_x), _vec3.y = (_y), _vec3.z = (_z), _vec3)
+#define VEC_NAN vec3(FLOAT_NAN, FLOAT_NAN, FLOAT_NAN);
+
+ERASEABLE
+bool is_all_nans(vector v) {
+ return isnan(v.x) && isnan(v.y) && isnan(v.z);
+}
+
ERASEABLE
vector Rotate(vector v, float a)
{
noref vector _yinvert;
#define yinvert(v) (_yinvert = (v), _yinvert.y = 1 - _yinvert.y, _yinvert)
+/// \param[in] p point
+/// \param[in] l0 starting point of ldir
+/// \param[in] ldir line
+/// \return Vector starting from p perpendicular to ldir
+ERASEABLE
+vector point_line_vec(vector p, vector l0, vector ldir)
+{
+ ldir = normalize(ldir);
+ p = l0 - p;
+ // remove the component in line direction from p
+ return p - ((p * ldir) * ldir);
+}
+
/**
* @param dir the directional vector
* @param norm the normalized normal