void DebugLineDouble(vec3_t start, vec3_t end, int color) {
vec3_t points[4], morepoints[4], dir, cross, up = {0, 0, 1};
float dot;
VectorCopy(start, points[0]);
VectorCopy(start, points[1]);
//points[1][2] -= 2;
VectorCopy(end, points[2]);
//points[2][2] -= 2;
VectorCopy(end, points[3]);
VectorSubtract(end, start, dir);
VectorNormalize(dir);
dot = DotProduct(dir, up);
if (dot > 0.99 || dot < -0.99) VectorSet(cross, 1, 0, 0);
else CrossProduct(dir, up, cross);
VectorNormalize(cross);
VectorMA(points[0], 2, up, morepoints[0]);
VectorMA(points[1], -2, up, morepoints[1]);
VectorMA(points[2], -2, up, morepoints[2]);
VectorMA(points[3], 2, up, morepoints[3]);
VectorMA(points[0], 2, cross, points[0]);
VectorMA(points[1], -2, cross, points[1]);
VectorMA(points[2], -2, cross, points[2]);
VectorMA(points[3], 2, cross, points[3]);
trap_DebugPolygonCreate(color, 4, points);
trap_DebugPolygonCreate(color, 4, morepoints);
}
/*
================
DebugLine
debug polygons only work when running a local game
with r_debugSurface set to 2
================
*/
int DebugLine( vec3_t start, vec3_t end, int color ) {
vec3_t points[4], dir, cross, up = {0, 0, 1};
float dot;
VectorCopy( start, points[0] );
VectorCopy( start, points[1] );
VectorCopy( end, points[2] );
VectorCopy( end, points[3] );
VectorSubtract( end, start, dir );
VectorNormalize( dir );
dot = DotProduct( dir, up );
if ( dot > 0.99 || dot < -0.99 ) {
VectorSet( cross, 1, 0, 0 );
} else { CrossProduct( dir, up, cross ); }
VectorNormalize( cross );
VectorMA( points[0], 2, cross, points[0] );
VectorMA( points[1], -2, cross, points[1] );
VectorMA( points[2], -2, cross, points[2] );
VectorMA( points[3], 2, cross, points[3] );
return trap_DebugPolygonCreate( color, 4, points );
}
