increased build number to 103

[xonotic/darkplaces.git] / mathlib.h

diff --git a/mathlib.h b/mathlib.h
index 19d9a808eb5305bcf23db4037e674db4502fe24c..4b613ba9f2e7332e654591f5d1cf6fc918d97e44 100644 (file)
--- a/mathlib.h
+++ b/mathlib.h
@@ -20,8 +20,13 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 // mathlib.h
 
 typedef float vec_t;
+typedef vec_t vec2_t[2];
 typedef vec_t vec3_t[3];
+typedef vec_t vec4_t[4];
 typedef vec_t vec5_t[5];
+typedef vec_t vec6_t[6];
+typedef vec_t vec7_t[7];
+typedef vec_t vec8_t[8];
 
 typedef        int     fixed4_t;
 typedef        int     fixed8_t;
@@ -31,6 +36,10 @@ typedef      int     fixed16_t;
 #define M_PI           3.14159265358979323846  // matches value in gcc v2 math.h
 #endif
 
+#define DEG2RAD(a) ((a) * ((float) M_PI / 180.0f))
+#define RAD2DEG(a) ((a) * (180.0f / (float) M_PI))
+#define ANGLEMOD(a) (((int) ((a) * (65536.0f / 360.0f)) & 65535) * (360.0f / 65536.0f))
+
 struct mplane_s;
 
 extern vec3_t vec3_origin;
@@ -40,13 +49,21 @@ extern      int nanmask;
 
 #define bound(min,num,max) (num >= min ? (num < max ? num : max) : min)
 
+#define VectorNegate(a,b) {b[0] = -(a[0]);b[1] = -(a[1]);b[2] = -(a[2]);}
+#define VectorSet(a,b,c,d) {d[0]=(a);d[1]=(b);d[2]=(c);}
+#define VectorClear(a) {a[0]=a[1]=a[2]=0;}
 #define DotProduct(x,y) (x[0]*y[0]+x[1]*y[1]+x[2]*y[2])
 #define VectorSubtract(a,b,c) {c[0]=a[0]-b[0];c[1]=a[1]-b[1];c[2]=a[2]-b[2];}
 #define VectorAdd(a,b,c) {c[0]=a[0]+b[0];c[1]=a[1]+b[1];c[2]=a[2]+b[2];}
 #define VectorCopy(a,b) {b[0]=a[0];b[1]=a[1];b[2]=a[2];}
 #define CrossProduct(v1,v2,cross) {cross[0] = v1[1]*v2[2] - v1[2]*v2[1];cross[1] = v1[2]*v2[0] - v1[0]*v2[2];cross[2] = v1[0]*v2[1] - v1[1]*v2[0];}
-#define VectorNormalize(v) {float ilength;if (ilength = sqrt (v[0]*v[0] + v[1]*v[1] + v[2]*v[2])) {ilength = 1/ilength;v[0] *= ilength;v[1] *= ilength;v[2] *= ilength;}}
-#define VectorNormalize2(v,dest) {float ilength;if (ilength = sqrt (v[0]*v[0] + v[1]*v[1] + v[2]*v[2])) {ilength = 1/ilength;dest[0] = v[0] * ilength;dest[1] = v[1] * ilength;dest[2] = v[2] * ilength;}}
+#define VectorNormalize(v) {float ilength = 1.0f / (float) sqrt(DotProduct(v,v));v[0] *= ilength;v[1] *= ilength;v[2] *= ilength;}
+#define VectorNormalize2(v,dest) {float ilength = 1.0f / (float) sqrt(DotProduct(v,v));dest[0] = v[0] * ilength;dest[1] = v[1] * ilength;dest[2] = v[2] * ilength;}
+#define VectorDistance2(a, b) ((a[0] - b[0]) * (a[0] - b[0]) + (a[1] - b[1]) * (a[1] - b[1]) + (a[2] - b[2]) * (a[2] - b[2]))
+#define VectorDistance(a, b) (sqrt(VectorDistance2(a,b)))
+#define VectorLength(a) sqrt(DotProduct(a, a))
+#define VectorScaleQuick(in, scale, out) {(out)[0] = (in)[0] * (scale);(out)[1] = (in)[1] * (scale);(out)[2] = (in)[2] * (scale);}
+#define VectorMAQuick(a, scale, b, c) {(c)[0] = (a)[0] + (scale) * (b)[0];(c)[1] = (a)[1] + (scale) * (b)[1];(c)[2] = (a)[2] + (scale) * (b)[2];}
 
 
 void VectorMA (vec3_t veca, float scale, vec3_t vecb, vec3_t vecc);
@@ -58,25 +75,28 @@ void _VectorCopy (vec3_t in, vec3_t out);
 
 int VectorCompare (vec3_t v1, vec3_t v2);
 vec_t Length (vec3_t v);
-//void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross);
 float VectorNormalizeLength (vec3_t v);                // returns vector length
 float VectorNormalizeLength2 (vec3_t v, vec3_t dest);          // returns vector length
 void VectorInverse (vec3_t v);
 void VectorScale (vec3_t in, vec_t scale, vec3_t out);
 int Q_log2(int val);
 
+#define NUMVERTEXNORMALS       162
+extern float m_bytenormals[NUMVERTEXNORMALS][3];
+
+byte NormalToByte(vec3_t n);
+void ByteToNormal(byte num, vec3_t n);
+
 void R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3]);
 void R_ConcatTransforms (float in1[3][4], float in2[3][4], float out[3][4]);
 
-void FloorDivMod (double numer, double denom, int *quotient,
-               int *rem);
-fixed16_t Invert24To16(fixed16_t val);
+void FloorDivMod (double numer, double denom, int *quotient, int *rem);
 int GreatestCommonDivisor (int i1, int i2);
 
 void AngleVectors (vec3_t angles, vec3_t forward, vec3_t right, vec3_t up);
-//int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct mplane_s *plane);
-float  anglemod(float a);
 
+// LordHavoc: like AngleVectors, but taking a forward vector instead of angles, useful!
+void VectorVectors(const vec3_t forward, vec3_t right, vec3_t up);
 
 void BoxOnPlaneSideClassify(struct mplane_s *p);
 
@@ -96,7 +116,12 @@ void BoxOnPlaneSideClassify(struct mplane_s *p);
        :                                                                               \
                (p)->BoxOnPlaneSideFunc( (emins), (emaxs), (p)))
 
-//             BoxOnPlaneSide( (emins), (emaxs), (p)))
+#define PlaneDist(point,plane)  ((plane)->type < 3 ? (point)[(plane)->type] : DotProduct((point), (plane)->normal))
+#define PlaneDiff(point,plane) (((plane)->type < 3 ? (point)[(plane)->type] : DotProduct((point), (plane)->normal)) - (plane)->dist)
 
-#define PlaneDist(point,plane) ((plane)->type < 3 ? (point)[(plane)->type] : DotProduct((point), (plane)->normal))
-#define PlaneDiff(point,plane) ((plane)->type < 3 ? (point)[(plane)->type] - (plane)->dist : DotProduct((point), (plane)->normal) - (plane)->dist)
\ No newline at end of file
+#define lhrandom(MIN,MAX) ((rand() & 32767) * (((MAX)-(MIN)) * (1.0f / 32767.0f)) + (MIN))
+
+#ifndef min
+#define min(A,B) (A < B ? A : B)
+#define max(A,B) (A > B ? A : B)
+#endif