ns/releases/3.03/source/common/vec_op.h
tankefugl 54a4ac5469 o Branched from 3.02
git-svn-id: https://unknownworlds.svn.cloudforge.com/ns1@85 67975925-1194-0748-b3d5-c16f83f1a3a1
2005-04-26 15:38:32 +00:00

10 lines
No EOL
427 B
C

#ifndef VECOP_H
#define VECOP_H
#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 VectorClear(a) { a[0]=0.0;a[1]=0.0;a[2]=0.0;}
#endif