void Matrix4x4_ConcatRotate( matrix4x4 out, float angle, float x, float y, float z )
{
matrix4x4 base, temp;
Matrix4x4_Copy( base, out );
Matrix4x4_CreateRotate( temp, angle, x, y, z );
Matrix4x4_Concat( out, base, temp );
}
void recalcLightViewMats(light_t *l){
// printf("updatin");
//todo if it is attached, just grab the attached matrix (same as entities do it)
Matrix4x4_CreateRotate(&l->view, l->angle[2], 0.0f, 0.0f, 1.0f);
Matrix4x4_ConcatRotate(&l->view, l->angle[0], 1.0f, 0.0f, 0.0f);
Matrix4x4_ConcatRotate(&l->view, l->angle[1], 0.0f, 1.0f, 0.0f);
Matrix4x4_ConcatTranslate(&l->view, -l->pos[0], -l->pos[1], -l->pos[2]);
// Matrix4x4_CreateFromQuakeEntity(&l->cam, l->pos[0], l->pos[1], l->pos[2], l->angle[2], l->angle[1], l->angle[0], 1.0);
// Matrix4x4_CreateFromQuakeEntity(&l->cam, l->pos[0], l->pos[1], l->pos[2], l->angle[2], l->angle[1], l->angle[0], l->scale);
Matrix4x4_Invert_Simple(&l->cam, &l->view); //temp? hack
}
static void R_RotateSprite(const mspriteframe_t *frame, vec3_t origin, vec3_t left, vec3_t up, int edge, float dir_angle)
{
if(!(r_track_sprites_flags.integer & TSF_ROTATE))
{
// move down by its size if on top, otherwise it's invisible
if(edge == SIDE_TOP)
VectorMA(origin, -(fabs(frame->up)+fabs(frame->down)), up, origin);
} else {
static float rotation_angles[5] =
{
0, // no edge
-90.0f, //top
0.0f, // left
90.0f, // bottom
180.0f, // right
};
// rotate around the hotspot according to which edge it's on
// since the hotspot == the origin, only rotate the vectors
matrix4x4_t rotm;
vec3_t axis;
vec3_t temp;
vec2_t dir;
float angle;
if(edge < 1 || edge > 4)
return; // this usually means something went wrong somewhere, there's no way to get a wrong edge value currently
dir[0] = frame->right + frame->left;
dir[1] = frame->down + frame->up;
// only rotate when the hotspot isn't the center though.
if(dir[0] < MIN_EPSILON && dir[1] < MIN_EPSILON)
{
return;
}
// Now that we've kicked center-hotspotted sprites, rotate using the appropriate matrix :)
// determine the angle of a sprite, we could only do that once though and
// add a `qboolean initialized' to the mspriteframe_t struct... let's get the direction vector of it :)
angle = atan(dir[1] / dir[0]) * 180.0f/M_PI;
// we need the real, full angle
if(dir[0] < 0.0f)
angle += 180.0f;
// Rotate around rotation_angle - frame_angle
// The axis SHOULD equal r_refdef.view.forward, but let's generalize this:
CrossProduct(up, left, axis);
if(r_track_sprites_flags.integer & TSF_ROTATE_CONTINOUSLY)
Matrix4x4_CreateRotate(&rotm, dir_angle - angle, axis[0], axis[1], axis[2]);
else
Matrix4x4_CreateRotate(&rotm, rotation_angles[edge] - angle, axis[0], axis[1], axis[2]);
Matrix4x4_Transform(&rotm, up, temp);
VectorCopy(temp, up);
Matrix4x4_Transform(&rotm, left, temp);
VectorCopy(temp, left);
}
}
