//draws a line. takes two points. returns true if drew
bool g3_draw_line(g3s_point *p0,g3s_point *p1)
{
ubyte codes_or;
if (p0->p3_codes & p1->p3_codes)
return 0;
codes_or = p0->p3_codes | p1->p3_codes;
if (codes_or & CC_BEHIND)
return must_clip_line(p0,p1,codes_or);
if (!(p0->p3_flags&PF_PROJECTED))
g3_project_point(p0);
if (p0->p3_flags&PF_OVERFLOW)
return must_clip_line(p0,p1,codes_or);
if (!(p1->p3_flags&PF_PROJECTED))
g3_project_point(p1);
if (p1->p3_flags&PF_OVERFLOW)
return must_clip_line(p0,p1,codes_or);
return (bool) (*line_drawer_ptr)(p0->p3_sx,p0->p3_sy,p1->p3_sx,p1->p3_sy);
}
//draws a bitmap with the specified 3d width & height
//returns 1 if off screen, 0 if drew
void g3_draw_bitmap(const vms_vector &pos,fix width,fix height,grs_bitmap &bm)
{
g3s_point pnt;
fix w,h;
if (g3_rotate_point(pnt,pos) & CC_BEHIND)
return;
g3_project_point(pnt);
if (pnt.p3_flags & PF_OVERFLOW)
return;
#ifndef __powerc
fix t;
if (checkmuldiv(&t,width,Canv_w2,pnt.p3_z))
w = fixmul(t,Matrix_scale.x);
else
return;
if (checkmuldiv(&t,height,Canv_h2,pnt.p3_z))
h = fixmul(t,Matrix_scale.y);
else
return;
#else
if (pnt.p3_z == 0)
return;
double fz = f2fl(pnt.p3_z);
w = fixmul(fl2f(((f2fl(width)*fCanv_w2) / fz)), Matrix_scale.x);
h = fixmul(fl2f(((f2fl(height)*fCanv_h2) / fz)), Matrix_scale.y);
#endif
const fix blob0y = pnt.p3_sy - h, blob1x = pnt.p3_sx + w;
const array<grs_point, 3> blob_vertices{{
{pnt.p3_sx - w, blob0y},
{blob1x, blob0y},
{blob1x, pnt.p3_sy + h},
}};
scale_bitmap(bm, blob_vertices, 0);
}
void draw_stars()
{
int i;
int intensity=31;
g3s_point p;
for (i=0;i<MAX_STARS;i++) {
if ((i&63) == 0) {
gr_setcolor(BM_XRGB(intensity,intensity,intensity));
intensity-=3;
}
//g3_rotate_point(&p,&stars[i]);
g3_rotate_delta_vec(&p.p3_vec,&stars[i]);
g3_code_point(&p);
if (p.p3_codes == 0) {
p.p3_flags &= ~PF_PROJECTED;
g3_project_point(&p);
#ifndef OGL
gr_pixel(f2i(p.p3_sx),f2i(p.p3_sy));
#else
g3_draw_sphere(&p,F1_0*3);
#endif
}
}
//@@ {
//@@ vms_vector delta;
//@@ g3s_point top_pnt;
//@@
//@@ g3_rotate_point(&p,&satellite_pos);
//@@ g3_rotate_delta_vec(&delta,&satellite_upvec);
//@@
//@@ g3_add_delta_vec(&top_pnt,&p,&delta);
//@@
//@@ if (! (p.p3_codes & CC_BEHIND)) {
//@@ int save_im = Interpolation_method;
//@@ Interpolation_method = 0;
//@@ //p.p3_flags &= ~PF_PROJECTED;
//@@ g3_project_point(&p);
//@@ if (! (p.p3_flags & PF_OVERFLOW))
//@@ //gr_bitmapm(f2i(p.p3_sx)-32,f2i(p.p3_sy)-32,satellite_bitmap);
//@@ g3_draw_rod_tmap(satellite_bitmap,&p,SATELLITE_WIDTH,&top_pnt,SATELLITE_WIDTH,f1_0);
//@@ Interpolation_method = save_im;
//@@ }
//@@ }
}
//draw a texture-mapped face.
//returns 1 if off screen, 0 if drew
bool g3_draw_tmap(int nv,g3s_point **pointlist,g3s_uvl *uvl_list,g3s_lrgb *light_rgb,grs_bitmap *bm)
{
int i;
g3s_point **bufptr;
g3s_codes cc;
cc.uor = 0; cc.uand = 0xff;
bufptr = Vbuf0;
for (i=0;i<nv;i++) {
g3s_point *p;
p = bufptr[i] = pointlist[i];
cc.uand &= p->p3_codes;
cc.uor |= p->p3_codes;
p->p3_u = uvl_list[i].u;
p->p3_v = uvl_list[i].v;
p->p3_l = (light_rgb[i].r+light_rgb[i].g+light_rgb[i].b)/3;
p->p3_flags |= PF_UVS + PF_LS;
}
if (cc.uand)
return 1; //all points off screen
if (cc.uor)
return must_clip_tmap_face(nv,cc,bm);
//now make list of 2d coords (& check for overflow)
for (i=0;i<nv;i++) {
g3s_point *p = bufptr[i];
if (!(p->p3_flags&PF_PROJECTED))
g3_project_point(p);
if (p->p3_flags&PF_OVERFLOW) {
Int3(); //should not overflow after clip
return 255;
}
}
(*tmap_drawer_ptr)(bm,nv,bufptr);
return 0; //say it drew
}
//draw a flat-shaded face.
//returns 1 if off screen, 0 if drew
bool g3_draw_poly(int nv,g3s_point **pointlist)
{
int i;
g3s_point **bufptr;
g3s_codes cc;
cc.uor = 0; cc.uand = 0xff;
bufptr = Vbuf0;
for (i=0;i<nv;i++) {
bufptr[i] = pointlist[i];
cc.uand &= bufptr[i]->p3_codes;
cc.uor |= bufptr[i]->p3_codes;
}
if (cc.uand)
return 1; //all points off screen
if (cc.uor)
return must_clip_flat_face(nv,cc);
//now make list of 2d coords (& check for overflow)
for (i=0;i<nv;i++) {
g3s_point *p = bufptr[i];
if (!(p->p3_flags&PF_PROJECTED))
g3_project_point(p);
if (p->p3_flags&PF_OVERFLOW)
return must_clip_flat_face(nv,cc);
Vertex_list[i*2] = p->p3_sx;
Vertex_list[i*2+1] = p->p3_sy;
}
(*flat_drawer_ptr)(nv,(int *)Vertex_list);
return 0; //say it drew
}
//deal with face that must be clipped
bool must_clip_flat_face(int nv,g3s_codes cc)
{
int i;
bool ret=0;
g3s_point **bufptr;
bufptr = clip_polygon(Vbuf0,Vbuf1,&nv,&cc);
if (nv>0 && !(cc.uor&CC_BEHIND) && !cc.uand) {
for (i=0;i<nv;i++) {
g3s_point *p = bufptr[i];
if (!(p->p3_flags&PF_PROJECTED))
g3_project_point(p);
if (p->p3_flags&PF_OVERFLOW) {
ret = 1;
goto free_points;
}
Vertex_list[i*2] = p->p3_sx;
Vertex_list[i*2+1] = p->p3_sy;
}
(*flat_drawer_ptr)(nv,(int *)Vertex_list);
}
else
ret=1;
//free temp points
free_points:
;
for (i=0;i<nv;i++)
if (Vbuf1[i]->p3_flags & PF_TEMP_POINT)
free_temp_point(Vbuf1[i]);
// Assert(free_point_num==0);
return ret;
}
//draw a sortof sphere - i.e., the 2d radius is proportional to the 3d
//radius, but not to the distance from the eye
int g3_draw_sphere(g3s_point *pnt,fix rad)
{
if (! (pnt->p3_codes & CC_BEHIND)) {
if (! (pnt->p3_flags & PF_PROJECTED))
g3_project_point(pnt);
if (! (pnt->p3_codes & PF_OVERFLOW)) {
fix r2,t;
r2 = fixmul(rad,Matrix_scale.x);
#ifndef __powerc
if (checkmuldiv(&t,r2,Canv_w2,pnt->p3_z))
return gr_disk(pnt->p3_sx,pnt->p3_sy,t);
#else
if (pnt->p3_z == 0)
return 0;
return gr_disk(pnt->p3_sx, pnt->p3_sy, fl2f(((f2fl(r2) * fCanv_w2) / f2fl(pnt->p3_z))));
#endif
}
}
return 0;
}
bool must_clip_tmap_face(int nv,g3s_codes cc,grs_bitmap *bm)
{
g3s_point **bufptr;
int i;
bufptr = clip_polygon(Vbuf0,Vbuf1,&nv,&cc);
if (nv && !(cc.uor&CC_BEHIND) && !cc.uand) {
for (i=0;i<nv;i++) {
g3s_point *p = bufptr[i];
if (!(p->p3_flags&PF_PROJECTED))
g3_project_point(p);
if (p->p3_flags&PF_OVERFLOW) {
Int3(); //should not overflow after clip
goto free_points;
}
}
(*tmap_drawer_ptr)(bm,nv,bufptr);
}
free_points:
;
for (i=0;i<nv;i++)
if (bufptr[i]->p3_flags & PF_TEMP_POINT)
free_temp_point(bufptr[i]);
// Assert(free_point_num==0);
return 0;
}
void DrawMarkerNumber (automap *am, int num)
{
int i;
g3s_point BasePoint,FromPoint,ToPoint;
float ArrayX[10][20]={ {-.25, 0.0, 0.0, 0.0, -1.0, 1.0},
{-1.0, 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, -1.0, -1.0, 1.0},
{-1.0, 1.0, 1.0, 1.0, -1.0, 1.0, 0.0, 1.0},
{-1.0, -1.0, -1.0, 1.0, 1.0, 1.0},
{-1.0, 1.0, -1.0, -1.0, -1.0, 1.0, 1.0, 1.0, -1.0, 1.0},
{-1.0, 1.0, -1.0, -1.0, -1.0, 1.0, 1.0, 1.0, -1.0, 1.0},
{-1.0, 1.0, 1.0, 1.0},
{-1.0, 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, -1.0, -1.0, 1.0},
{-1.0, 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, -1.0}
};
float ArrayY[10][20]={ {.75, 1.0, 1.0, -1.0, -1.0, -1.0},
{1.0, 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, -1.0, -1.0, -1.0},
{1.0, 1.0, 1.0, -1.0, -1.0, -1.0, 0.0, 0.0},
{1.0, 0.0, 0.0, 0.0, 1.0, -1.0},
{1.0, 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, -1.0, -1.0, -1.0},
{1.0, 1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 0.0, 0.0, 0.0},
{1.0, 1.0, 1.0, -1.0},
{1.0, 1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 1.0, 0.0, 0.0},
{1.0, 1.0, 1.0, -1.0, 0.0, 0.0, 0.0, 1.0}
};
int NumOfPoints[]={6,10,8,6,10,10,4,10,8};
for (i=0;i<NumOfPoints[num];i++)
{
ArrayX[num][i]*=MarkerScale;
ArrayY[num][i]*=MarkerScale;
}
if (num==HighlightMarker)
gr_setcolor (am->white_63);
else
gr_setcolor (am->blue_48);
g3_rotate_point(&BasePoint,&Objects[MarkerObject[(Player_num*2)+num]].pos);
for (i=0;i<NumOfPoints[num];i+=2)
{
FromPoint=BasePoint;
ToPoint=BasePoint;
FromPoint.p3_x+=fixmul ((fl2f (ArrayX[num][i])),Matrix_scale.x);
FromPoint.p3_y+=fixmul ((fl2f (ArrayY[num][i])),Matrix_scale.y);
g3_code_point (&FromPoint);
g3_project_point (&FromPoint);
ToPoint.p3_x+=fixmul ((fl2f (ArrayX[num][i+1])),Matrix_scale.x);
ToPoint.p3_y+=fixmul ((fl2f (ArrayY[num][i+1])),Matrix_scale.y);
g3_code_point (&ToPoint);
g3_project_point (&ToPoint);
automap_draw_line(&FromPoint, &ToPoint);
}
}
//draws a bitmap with the specified 3d width & height
//returns 1 if off screen, 0 if drew
bool g3_draw_bitmap(vms_vector *pos,fix width,fix height,grs_bitmap *bm)
{
#ifndef __powerc
g3s_point pnt;
fix t,w,h;
if (g3_rotate_point(&pnt,pos) & CC_BEHIND)
return 1;
g3_project_point(&pnt);
if (pnt.p3_flags & PF_OVERFLOW)
return 1;
if (checkmuldiv(&t,width,Canv_w2,pnt.p3_z))
w = fixmul(t,Matrix_scale.x);
else
return 1;
if (checkmuldiv(&t,height,Canv_h2,pnt.p3_z))
h = fixmul(t,Matrix_scale.y);
else
return 1;
blob_vertices[0].x = pnt.p3_sx - w;
blob_vertices[0].y = blob_vertices[1].y = pnt.p3_sy - h;
blob_vertices[1].x = blob_vertices[2].x = pnt.p3_sx + w;
blob_vertices[2].y = pnt.p3_sy + h;
scale_bitmap(bm,blob_vertices,0);
return 0;
#else
g3s_point pnt;
fix w,h;
double fz;
if (g3_rotate_point(&pnt,pos) & CC_BEHIND)
return 1;
g3_project_point(&pnt);
if (pnt.p3_flags & PF_OVERFLOW)
return 1;
if (pnt.p3_z == 0)
return 1;
fz = f2fl(pnt.p3_z);
w = fixmul(fl2f(((f2fl(width)*fCanv_w2) / fz)), Matrix_scale.x);
h = fixmul(fl2f(((f2fl(height)*fCanv_h2) / fz)), Matrix_scale.y);
blob_vertices[0].x = pnt.p3_sx - w;
blob_vertices[0].y = blob_vertices[1].y = pnt.p3_sy - h;
blob_vertices[1].x = blob_vertices[2].x = pnt.p3_sx + w;
blob_vertices[2].y = pnt.p3_sy + h;
scale_bitmap(bm, blob_vertices, 0);
return 0;
#endif
}
