TakeV/dxx-rebirth
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity
dxx-rebirth/editor/seguvs.c
zicodxx fb775b35c3 Fixed set but unused variables
2011-09-27 01:31:17 +02:00

1513 lines
49 KiB
C
Raw Blame History

/*
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
*/
/*
*
* u,v coordinate computation for segment faces
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <math.h>
#include <string.h>
#include "inferno.h"
#include "segment.h"
#include "editor/editor.h"
#include "gameseg.h"
#include "fix.h"
#include "error.h"
#include "wall.h"
#include "editor/kdefs.h"
#include "bm.h" // Needed for TmapInfo
#include "effects.h" // Needed for effects_bm_num
#include "fvi.h"
void cast_all_light_in_mine(int quick_flag);
//--rotate_uvs-- vms_vector Rightvec;
// ---------------------------------------------------------------------------------------------
// Returns approximate area of a side
fix area_on_side(side *sidep)
{
fix du,dv,width,height;
du = sidep->uvls[1].u - sidep->uvls[0].u;
dv = sidep->uvls[1].v - sidep->uvls[0].v;
width = fix_sqrt(fixmul(du,du) + fixmul(dv,dv));
du = sidep->uvls[3].u - sidep->uvls[0].u;
dv = sidep->uvls[3].v - sidep->uvls[0].v;
height = fix_sqrt(fixmul(du,du) + fixmul(dv,dv));
return fixmul(width, height);
}
// -------------------------------------------------------------------------------------------
// DEBUG function -- callable from debugger.
// Returns approximate area of all sides which get mapped (ie, are not a connection).
// I wrote this because I was curious how much memory would be required to texture map all
// sides individually with custom artwork. For demo1.min on 2/18/94, it would be about 5 meg.
int area_on_all_sides(void)
{
int i,s;
int total_area = 0;
for (i=0; i<=Highest_segment_index; i++) {
segment *segp = &Segments[i];
for (s=0; s<MAX_SIDES_PER_SEGMENT; s++)
if (!IS_CHILD(segp->children[s]))
total_area += f2i(area_on_side(&segp->sides[s]));
}
return total_area;
}
fix average_connectivity(void)
{
int i,s;
int total_sides = 0, total_mapped_sides = 0;
for (i=0; i<=Highest_segment_index; i++) {
segment *segp = &Segments[i];
for (s=0; s<MAX_SIDES_PER_SEGMENT; s++) {
if (!IS_CHILD(segp->children[s]))
total_mapped_sides++;
total_sides++;
}
}
return 6 * fixdiv(total_mapped_sides, total_sides);
}
#define MAX_LIGHT_SEGS 16
// ---------------------------------------------------------------------------------------------
// Scan all polys in all segments, return average light value for vnum.
// segs = output array for segments containing vertex, terminated by -1.
fix get_average_light_at_vertex(int vnum, short *segs)
{
int segnum, relvnum, sidenum;
fix total_light;
int num_occurrences;
// #ifndef NDEBUG //Removed this ifdef because the version of Assert that I used to get it to compile doesn't work without this symbol. -KRB
short *original_segs;
original_segs = segs;
// #endif
num_occurrences = 0;
total_light = 0;
for (segnum=0; segnum<=Highest_segment_index; segnum++) {
segment *segp = &Segments[segnum];
int *vp = segp->verts;
for (relvnum=0; relvnum<MAX_VERTICES_PER_SEGMENT; relvnum++)
if (*vp++ == vnum)
break;
if (relvnum < MAX_VERTICES_PER_SEGMENT) {
*segs++ = segnum;
Assert(segs - original_segs < MAX_LIGHT_SEGS);
(void)original_segs;
for (sidenum=0; sidenum < MAX_SIDES_PER_SEGMENT; sidenum++) {
if (!IS_CHILD(segp->children[sidenum])) {
side *sidep = &segp->sides[sidenum];
sbyte *vp = Side_to_verts[sidenum];
int v;
for (v=0; v<4; v++)
if (*vp++ == relvnum) {
total_light += sidep->uvls[v].l;
num_occurrences++;
}
} // end if
} // end sidenum
}
} // end segnum
*segs = -1;
if (num_occurrences)
return total_light/num_occurrences;
else
return 0;
}
void set_average_light_at_vertex(int vnum)
{
int relvnum, sidenum;
short Segment_indices[MAX_LIGHT_SEGS];
int segind;
fix average_light;
average_light = get_average_light_at_vertex(vnum, Segment_indices);
if (!average_light)
return;
segind = 0;
while (Segment_indices[segind] != -1) {
int segnum = Segment_indices[segind++];
segment *segp = &Segments[segnum];
for (relvnum=0; relvnum<MAX_VERTICES_PER_SEGMENT; relvnum++)
if (segp->verts[relvnum] == vnum)
break;
if (relvnum < MAX_VERTICES_PER_SEGMENT) {
for (sidenum=0; sidenum < MAX_SIDES_PER_SEGMENT; sidenum++) {
if (!IS_CHILD(segp->children[sidenum])) {
side *sidep = &segp->sides[sidenum];
sbyte *vp = Side_to_verts[sidenum];
int v;
for (v=0; v<4; v++)
if (*vp++ == relvnum)
sidep->uvls[v].l = average_light;
} // end if
} // end sidenum
} // end if
} // end while
Update_flags |= UF_WORLD_CHANGED;
}
void set_average_light_on_side(segment *segp, int sidenum)
{
int v;
if (!IS_CHILD(segp->children[sidenum]))
for (v=0; v<4; v++) {
set_average_light_at_vertex(segp->verts[Side_to_verts[sidenum][v]]);
}
}
int set_average_light_on_curside(void)
{
set_average_light_on_side(Cursegp, Curside);
return 0;
}
// -----------------------------------------------------------------------------------------
void set_average_light_on_all_fast(void)
{
int s,v,relvnum;
fix al;
int alc;
int seglist[MAX_LIGHT_SEGS];
int *segptr;
set_vertex_counts();
// Set total light value for all vertices in array average_light.
for (v=0; v<=Highest_vertex_index; v++) {
al = 0;
alc = 0;
if (Vertex_active[v]) {
segptr = seglist;
for (s=0; s<=Highest_segment_index; s++) {
segment *segp = &Segments[s];
for (relvnum=0; relvnum<MAX_VERTICES_PER_SEGMENT; relvnum++)
if (segp->verts[relvnum] == v)
break;
if (relvnum != MAX_VERTICES_PER_SEGMENT) {
int si;
*segptr++ = s; // Note this segment in list, so we can process it below.
Assert(segptr - seglist < MAX_LIGHT_SEGS);
for (si=0; si<MAX_SIDES_PER_SEGMENT; si++) {
if (!IS_CHILD(segp->children[si])) {
side *sidep = &segp->sides[si];
sbyte *vp = Side_to_verts[si];
int vv;
for (vv=0; vv<4; vv++)
if (*vp++ == relvnum) {
al += sidep->uvls[vv].l;
alc++;
}
} // if (segp->children[si == -1) {
} // for (si=0...
} // if (relvnum != ...
} // for (s=0; ...
*segptr = -1;
// Now, divide average_light by number of number of occurrences for each vertex
if (alc)
al /= alc;
else
al = 0;
segptr = seglist;
while (*segptr != -1) {
int segnum = *segptr++;
segment *segp = &Segments[segnum];
int sidenum;
for (relvnum=0; relvnum<MAX_VERTICES_PER_SEGMENT; relvnum++)
if (segp->verts[relvnum] == v)
break;
Assert(relvnum < MAX_VERTICES_PER_SEGMENT); // IMPOSSIBLE! This segment is in seglist, but vertex v does not occur!
for (sidenum=0; sidenum < MAX_SIDES_PER_SEGMENT; sidenum++) {
int wid_result;
wid_result = WALL_IS_DOORWAY(segp, sidenum);
if ((wid_result != WID_FLY_FLAG) && (wid_result != WID_NO_WALL)) {
side *sidep = &segp->sides[sidenum];
sbyte *vp = Side_to_verts[sidenum];
int v;
for (v=0; v<4; v++)
if (*vp++ == relvnum)
sidep->uvls[v].l = al;
} // end if
} // end sidenum
} // end while
} // if (Vertex_active[v]...
} // for (v=0...
}
extern int Doing_lighting_hack_flag;
int set_average_light_on_all(void)
{
// set_average_light_on_all_fast();
Doing_lighting_hack_flag = 1;
cast_all_light_in_mine(0);
Doing_lighting_hack_flag = 0;
Update_flags |= UF_WORLD_CHANGED;
// int seg, side;
// for (seg=0; seg<=Highest_segment_index; seg++)
// for (side=0; side<MAX_SIDES_PER_SEGMENT; side++)
// if (Segments[seg].segnum != -1)
// set_average_light_on_side(&Segments[seg], side);
return 0;
}
int set_average_light_on_all_quick(void)
{
cast_all_light_in_mine(1);
Update_flags |= UF_WORLD_CHANGED;
return 0;
}
// ---------------------------------------------------------------------------------------------
fix compute_uv_dist(uvl *uv0, uvl *uv1)
{
vms_vector v0,v1;
v0.x = uv0->u;
v0.y = 0;
v0.z = uv0->v;
v1.x = uv1->u;
v1.y = 0;
v1.z = uv1->v;
return vm_vec_dist(&v0,&v1);
}
// ---------------------------------------------------------------------------------------------
// Given a polygon, compress the uv coordinates so that they are as close to 0 as possible.
// Do this by adding a constant u and v to each uv pair.
void compress_uv_coordinates(side *sidep)
{
int v;
fix uc, vc;
uc = 0;
vc = 0;
for (v=0; v<4; v++) {
uc += sidep->uvls[v].u;
vc += sidep->uvls[v].v;
}
uc /= 4;
vc /= 4;
uc = uc & 0xffff0000;
vc = vc & 0xffff0000;
for (v=0; v<4; v++) {
sidep->uvls[v].u -= uc;
sidep->uvls[v].v -= vc;
}
}
// ---------------------------------------------------------------------------------------------
void compress_uv_coordinates_on_side(side *sidep)
{
compress_uv_coordinates(sidep);
}
// ---------------------------------------------------------------------------------------------
void validate_uv_coordinates_on_side(segment *segp, int sidenum)
{
// int v;
// fix uv_dist,threed_dist;
// vms_vector tvec;
// fix dist_ratios[MAX_VERTICES_PER_POLY];
side *sidep = &segp->sides[sidenum];
// sbyte *vp = Side_to_verts[sidenum];
// This next hunk doesn't seem to affect anything. @mk, 02/13/94
// for (v=1; v<4; v++) {
// uv_dist = compute_uv_dist(&sidep->uvls[v],&sidep->uvls[0]);
// threed_dist = vm_vec_mag(vm_vec_sub(&tvec,&Vertices[segp->verts[vp[v]],&Vertices[vp[0]]));
// dist_ratios[v-1] = fixdiv(uv_dist,threed_dist);
// }
compress_uv_coordinates_on_side(sidep);
}
void compress_uv_coordinates_in_segment(segment *segp)
{
int side;
for (side=0; side<MAX_SIDES_PER_SEGMENT; side++)
compress_uv_coordinates_on_side(&segp->sides[side]);
}
void compress_uv_coordinates_all(void)
{
int seg;
for (seg=0; seg<=Highest_segment_index; seg++)
if (Segments[seg].segnum != -1)
compress_uv_coordinates_in_segment(&Segments[seg]);
}
void check_lighting_side(segment *sp, int sidenum)
{
int v;
side *sidep = &sp->sides[sidenum];
for (v=0; v<4; v++)
if ((sidep->uvls[v].l > F1_0*16) || (sidep->uvls[v].l < 0))
Int3();
}
void check_lighting_segment(segment *segp)
{
int side;
for (side=0; side<MAX_SIDES_PER_SEGMENT; side++)
check_lighting_side(segp, side);
}
// Flag bogus lighting values.
void check_lighting_all(void)
{
int seg;
for (seg=0; seg<=Highest_segment_index; seg++)
if (Segments[seg].segnum != -1)
check_lighting_segment(&Segments[seg]);
}
void assign_default_lighting_on_side(segment *segp, int sidenum)
{
int v;
side *sidep = &segp->sides[sidenum];
for (v=0; v<4; v++)
sidep->uvls[v].l = DEFAULT_LIGHTING;
}
void assign_default_lighting(segment *segp)
{
int sidenum;
for (sidenum=0; sidenum<MAX_SIDES_PER_SEGMENT; sidenum++)
assign_default_lighting_on_side(segp, sidenum);
}
void assign_default_lighting_all(void)
{
int seg;
for (seg=0; seg<=Highest_segment_index; seg++)
if (Segments[seg].segnum != -1)
assign_default_lighting(&Segments[seg]);
}
// ---------------------------------------------------------------------------------------------
void validate_uv_coordinates(segment *segp)
{
int s;
for (s=0; s<MAX_SIDES_PER_SEGMENT; s++)
validate_uv_coordinates_on_side(segp,s);
}
// ---------------------------------------------------------------------------------------------
// For all faces in side, copy uv coordinates from uvs array to face.
void copy_uvs_from_side_to_faces(segment *segp, int sidenum, uvl uvls[])
{
int v;
side *sidep = &segp->sides[sidenum];
for (v=0; v<4; v++)
sidep->uvls[v] = uvls[v];
}
#ifdef __WATCOMC__
fix zhypot(fix a,fix b);
#pragma aux zhypot parm [eax] [ebx] value [eax] modify [eax ebx ecx edx] = \
"imul eax" \
"xchg eax,ebx" \
"mov ecx,edx" \
"imul eax" \
"add eax,ebx" \
"adc edx,ecx" \
"call quad_sqrt";
#else
fix zhypot(fix a,fix b) {
double x = (double)a / 65536;
double y = (double)b / 65536;
return (long)(sqrt(x * x + y * y) * 65536);
}
#endif
// ---------------------------------------------------------------------------------------------
// Assign lighting value to side, a function of the normal vector.
void assign_light_to_side(segment *sp, int sidenum)
{
int v;
side *sidep = &sp->sides[sidenum];
for (v=0; v<4; v++)
sidep->uvls[v].l = DEFAULT_LIGHTING;
}
fix Stretch_scale_x = F1_0;
fix Stretch_scale_y = F1_0;
// ---------------------------------------------------------------------------------------------
// Given u,v coordinates at two vertices, assign u,v coordinates to other two vertices on a side.
// (Actually, assign them to the coordinates in the faces.)
// va, vb = face-relative vertex indices corresponding to uva, uvb. Ie, they are always in 0..3 and should be looked up in
// Side_to_verts[side] to get the segment relative index.
void assign_uvs_to_side(segment *segp, int sidenum, uvl *uva, uvl *uvb, int va, int vb)
{
int vlo,vhi,v0,v1,v2,v3;
vms_vector fvec,rvec,tvec;
vms_matrix rotmat;
uvl uvls[4],ruvmag,fuvmag,uvlo,uvhi;
fix fmag,mag01;
sbyte *vp;
Assert( (va<4) && (vb<4) );
Assert((abs(va - vb) == 1) || (abs(va - vb) == 3)); // make sure the verticies specify an edge
vp = (sbyte *)&Side_to_verts[sidenum];
// We want vlo precedes vhi, ie vlo < vhi, or vlo = 3, vhi = 0
if (va == ((vb + 1) % 4)) { // va = vb + 1
vlo = vb;
vhi = va;
uvlo = *uvb;
uvhi = *uva;
} else {
vlo = va;
vhi = vb;
uvlo = *uva;
uvhi = *uvb;
}
Assert(((vlo+1) % 4) == vhi); // If we are on an edge, then uvhi is one more than uvlo (mod 4)
uvls[vlo] = uvlo;
uvls[vhi] = uvhi;
// Now we have vlo precedes vhi, compute vertices ((vhi+1) % 4) and ((vhi+2) % 4)
// Assign u,v scale to a unit length right vector.
fmag = zhypot(uvhi.v - uvlo.v,uvhi.u - uvlo.u);
if (fmag < 64) { // this is a fix, so 64 = 1/1024
ruvmag.u = F1_0*256;
ruvmag.v = F1_0*256;
fuvmag.u = F1_0*256;
fuvmag.v = F1_0*256;
} else {
ruvmag.u = uvhi.v - uvlo.v;
ruvmag.v = uvlo.u - uvhi.u;
fuvmag.u = uvhi.u - uvlo.u;
fuvmag.v = uvhi.v - uvlo.v;
}
v0 = segp->verts[vp[vlo]];
v1 = segp->verts[vp[vhi]];
v2 = segp->verts[vp[(vhi+1)%4]];
v3 = segp->verts[vp[(vhi+2)%4]];
// Compute right vector by computing orientation matrix from:
// forward vector = vlo:vhi
// right vector = vlo:(vhi+2) % 4
vm_vec_sub(&fvec,&Vertices[v1],&Vertices[v0]);
vm_vec_sub(&rvec,&Vertices[v3],&Vertices[v0]);
if (((fvec.x == 0) && (fvec.y == 0) && (fvec.z == 0)) || ((rvec.x == 0) && (rvec.y == 0) && (rvec.z == 0))) {
rotmat = vmd_identity_matrix;
} else
vm_vector_2_matrix(&rotmat,&fvec,0,&rvec);
rvec = rotmat.rvec; vm_vec_negate(&rvec);
fvec = rotmat.fvec;
mag01 = vm_vec_dist(&Vertices[v1],&Vertices[v0]);
if ((va == 0) || (va == 2))
mag01 = fixmul(mag01, Stretch_scale_x);
else
mag01 = fixmul(mag01, Stretch_scale_y);
if (mag01 < F1_0/1024 )
editor_status("U, V bogosity in segment #%i, probably on side #%i. CLEAN UP YOUR MESS!", segp-Segments, sidenum);
else {
vm_vec_sub(&tvec,&Vertices[v2],&Vertices[v1]);
uvls[(vhi+1)%4].u = uvhi.u +
fixdiv(fixmul(ruvmag.u,vm_vec_dotprod(&rvec,&tvec)),mag01) +
fixdiv(fixmul(fuvmag.u,vm_vec_dotprod(&fvec,&tvec)),mag01);
uvls[(vhi+1)%4].v = uvhi.v +
fixdiv(fixmul(ruvmag.v,vm_vec_dotprod(&rvec,&tvec)),mag01) +
fixdiv(fixmul(fuvmag.v,vm_vec_dotprod(&fvec,&tvec)),mag01);
vm_vec_sub(&tvec,&Vertices[v3],&Vertices[v0]);
uvls[(vhi+2)%4].u = uvlo.u +
fixdiv(fixmul(ruvmag.u,vm_vec_dotprod(&rvec,&tvec)),mag01) +
fixdiv(fixmul(fuvmag.u,vm_vec_dotprod(&fvec,&tvec)),mag01);
uvls[(vhi+2)%4].v = uvlo.v +
fixdiv(fixmul(ruvmag.v,vm_vec_dotprod(&rvec,&tvec)),mag01) +
fixdiv(fixmul(fuvmag.v,vm_vec_dotprod(&fvec,&tvec)),mag01);
uvls[(vhi+1)%4].l = uvhi.l;
uvls[(vhi+2)%4].l = uvlo.l;
copy_uvs_from_side_to_faces(segp, sidenum, uvls);
}
}
int Vmag = VMAG;
// -----------------------------------------------------------------------------------------------------------
// Assign default uvs to side.
// This means:
// v0 = 0,0
// v1 = k,0 where k is 3d size dependent
// v2, v3 assigned by assign_uvs_to_side
void assign_default_uvs_to_side(segment *segp,int side)
{
uvl uv0,uv1;
sbyte *vp;
uv0.u = 0;
uv0.v = 0;
vp = Side_to_verts[side];
uv1.u = 0;
uv1.v = Num_tilings * fixmul(Vmag, vm_vec_dist(&Vertices[segp->verts[vp[1]]],&Vertices[segp->verts[vp[0]]]));
assign_uvs_to_side(segp, side, &uv0, &uv1, 0, 1);
}
// -----------------------------------------------------------------------------------------------------------
// Assign default uvs to side.
// This means:
// v0 = 0,0
// v1 = k,0 where k is 3d size dependent
// v2, v3 assigned by assign_uvs_to_side
void stretch_uvs_from_curedge(segment *segp, int side)
{
uvl uv0,uv1;
int v0, v1;
v0 = Curedge;
v1 = (v0 + 1) % 4;
uv0.u = segp->sides[side].uvls[v0].u;
uv0.v = segp->sides[side].uvls[v0].v;
uv1.u = segp->sides[side].uvls[v1].u;
uv1.v = segp->sides[side].uvls[v1].v;
assign_uvs_to_side(segp, side, &uv0, &uv1, v0, v1);
}
// --------------------------------------------------------------------------------------------------------------
// Assign default uvs to a segment.
void assign_default_uvs_to_segment(segment *segp)
{
int s;
for (s=0; s<MAX_SIDES_PER_SEGMENT; s++) {
assign_default_uvs_to_side(segp,s);
assign_light_to_side(segp, s);
}
}
// -- mk021394 -- // --------------------------------------------------------------------------------------------------------------
// -- mk021394 -- // Find the face:poly:vertex index in base_seg:base_common_side which is segment relative vertex v1
// -- mk021394 -- // This very specific routine is subsidiary to med_assign_uvs_to_side.
// -- mk021394 -- void get_face_and_vert(segment *base_seg, int base_common_side, int v1, int *ff, int *vv, int *pi)
// -- mk021394 -- {
// -- mk021394 -- int p,f,v;
// -- mk021394 --
// -- mk021394 -- for (f=0; f<base_seg->sides[base_common_side].num_faces; f++) {
// -- mk021394 -- face *fp = &base_seg->sides[base_common_side].faces[f];
// -- mk021394 -- for (p=0; p<fp->num_polys; p++) {
// -- mk021394 -- poly *pp = &fp->polys[p];
// -- mk021394 -- for (v=0; v<pp->num_vertices; v++)
// -- mk021394 -- if (pp->verts[v] == v1) {
// -- mk021394 -- *ff = f;
// -- mk021394 -- *vv = v;
// -- mk021394 -- *pi = p;
// -- mk021394 -- return;
// -- mk021394 -- }
// -- mk021394 -- }
// -- mk021394 -- }
// -- mk021394 --
// -- mk021394 -- Assert(0); // Error -- Couldn't find face:vertex which matched vertex v1 on base_seg:base_common_side
// -- mk021394 -- }
// -- mk021394 -- // --------------------------------------------------------------------------------------------------------------
// -- mk021394 -- // Find the vertex index in base_seg:base_common_side which is segment relative vertex v1
// -- mk021394 -- // This very specific routine is subsidiary to med_assign_uvs_to_side.
// -- mk021394 -- void get_side_vert(segment *base_seg,int base_common_side,int v1,int *vv)
// -- mk021394 -- {
// -- mk021394 -- int p,f,v;
// -- mk021394 --
// -- mk021394 -- Assert((base_seg->sides[base_common_side].tri_edge == 0) || (base_seg->sides[base_common_side].tri_edge == 1));
// -- mk021394 -- Assert(base_seg->sides[base_common_side].num_faces <= 2);
// -- mk021394 --
// -- mk021394 -- for (f=0; f<base_seg->sides[base_common_side].num_faces; f++) {
// -- mk021394 -- face *fp = &base_seg->sides[base_common_side].faces[f];
// -- mk021394 -- for (p=0; p<fp->num_polys; p++) {
// -- mk021394 -- poly *pp = &fp->polys[p];
// -- mk021394 -- for (v=0; v<pp->num_vertices; v++)
// -- mk021394 -- if (pp->verts[v] == v1) {
// -- mk021394 -- if (pp->num_vertices == 4) {
// -- mk021394 -- *vv = v;
// -- mk021394 -- return;
// -- mk021394 -- }
// -- mk021394 --
// -- mk021394 -- if (base_seg->sides[base_common_side].tri_edge == 0) { // triangulated 012, 023, so if f==0, *vv = v, if f==1, *vv = v if v=0, else v+1
// -- mk021394 -- if ((f == 1) && (v > 0))
// -- mk021394 -- v++;
// -- mk021394 -- *vv = v;
// -- mk021394 -- return;
// -- mk021394 -- } else { // triangulated 013, 123
// -- mk021394 -- if (f == 0) {
// -- mk021394 -- if (v == 2)
// -- mk021394 -- v++;
// -- mk021394 -- } else
// -- mk021394 -- v++;
// -- mk021394 -- *vv = v;
// -- mk021394 -- return;
// -- mk021394 -- }
// -- mk021394 -- }
// -- mk021394 -- }
// -- mk021394 -- }
// -- mk021394 --
// -- mk021394 -- Assert(0); // Error -- Couldn't find face:vertex which matched vertex v1 on base_seg:base_common_side
// -- mk021394 -- }
//--rotate_uvs-- // --------------------------------------------------------------------------------------------------------------
//--rotate_uvs-- // Rotate uvl coordinates uva, uvb about their center point by heading
//--rotate_uvs-- void rotate_uvs(uvl *uva, uvl *uvb, vms_vector *rvec)
//--rotate_uvs-- {
//--rotate_uvs-- uvl uvc, uva1, uvb1;
//--rotate_uvs--
//--rotate_uvs-- uvc.u = (uva->u + uvb->u)/2;
//--rotate_uvs-- uvc.v = (uva->v + uvb->v)/2;
//--rotate_uvs--
//--rotate_uvs-- uva1.u = fixmul(uva->u - uvc.u, rvec->x) - fixmul(uva->v - uvc.v, rvec->z);
//--rotate_uvs-- uva1.v = fixmul(uva->u - uvc.u, rvec->z) + fixmul(uva->v - uvc.v, rvec->x);
//--rotate_uvs--
//--rotate_uvs-- uva->u = uva1.u + uvc.u;
//--rotate_uvs-- uva->v = uva1.v + uvc.v;
//--rotate_uvs--
//--rotate_uvs-- uvb1.u = fixmul(uvb->u - uvc.u, rvec->x) - fixmul(uvb->v - uvc.v, rvec->z);
//--rotate_uvs-- uvb1.v = fixmul(uvb->u - uvc.u, rvec->z) + fixmul(uvb->v - uvc.v, rvec->x);
//--rotate_uvs--
//--rotate_uvs-- uvb->u = uvb1.u + uvc.u;
//--rotate_uvs-- uvb->v = uvb1.v + uvc.v;
//--rotate_uvs-- }
// --------------------------------------------------------------------------------------------------------------
void med_assign_uvs_to_side(segment *con_seg, int con_common_side, segment *base_seg, int base_common_side, int abs_id1, int abs_id2)
{
uvl uv1,uv2;
int v,bv1,bv2, vv1, vv2;
int cv1=0, cv2=0;
bv1 = -1; bv2 = -1;
// Find which vertices in segment match abs_id1, abs_id2
for (v=0; v<MAX_VERTICES_PER_SEGMENT; v++) {
if (base_seg->verts[v] == abs_id1)
bv1 = v;
if (base_seg->verts[v] == abs_id2)
bv2 = v;
if (con_seg->verts[v] == abs_id1)
cv1 = v;
if (con_seg->verts[v] == abs_id2)
cv2 = v;
}
// Now, bv1, bv2 are segment relative vertices in base segment which are the same as absolute vertices abs_id1, abs_id2
// cv1, cv2 are segment relative vertices in conn segment which are the same as absolute vertices abs_id1, abs_id2
Assert((bv1 != -1) && (bv2 != -1) && (cv1 != -1) && (cv2 != -1));
// Now, scan 4 vertices in base side and 4 vertices in connected side.
// Set uv1, uv2 to uv coordinates from base side which correspond to vertices bv1, bv2.
// Set vv1, vv2 to relative vertex ids (in 0..3) in connecting side which correspond to cv1, cv2
vv1 = -1; vv2 = -1;
for (v=0; v<4; v++) {
if (bv1 == Side_to_verts[base_common_side][v])
uv1 = base_seg->sides[base_common_side].uvls[v];
if (bv2 == Side_to_verts[base_common_side][v])
uv2 = base_seg->sides[base_common_side].uvls[v];
if (cv1 == Side_to_verts[con_common_side][v])
vv1 = v;
if (cv2 == Side_to_verts[con_common_side][v])
vv2 = v;
}
Assert((uv1.u != uv2.u) || (uv1.v != uv2.v));
Assert( (vv1 != -1) && (vv2 != -1) );
assign_uvs_to_side(con_seg, con_common_side, &uv1, &uv2, vv1, vv2);
}
// -----------------------------------------------------------------------------
// Given a base and a connecting segment, a side on each of those segments and two global vertex ids,
// determine which side in each of the segments shares those two vertices.
// This is used to propagate a texture map id to a connecting segment in an expected and desired way.
// Since we can attach any side of a segment to any side of another segment, and do so in each case in
// four different rotations (for a total of 6*6*4 = 144 ways), not having this nifty function will cause
// great confusion.
void get_side_ids(segment *base_seg, segment *con_seg, int base_side, int con_side, int abs_id1, int abs_id2, int *base_common_side, int *con_common_side)
{
sbyte *base_vp,*con_vp;
int v0,side;
*base_common_side = -1;
// Find side in base segment which contains the two global vertex ids.
for (side=0; side<MAX_SIDES_PER_SEGMENT; side++) {
if (side != base_side) {
base_vp = Side_to_verts[side];
for (v0=0; v0<4; v0++)
if (((base_seg->verts[(int) base_vp[v0]] == abs_id1) && (base_seg->verts[(int) base_vp[(v0+1) % 4]] == abs_id2)) || ((base_seg->verts[(int) base_vp[v0]] == abs_id2) && (base_seg->verts[(int)base_vp[ (v0+1) % 4]] == abs_id1))) {
Assert(*base_common_side == -1); // This means two different sides shared the same edge with base_side == impossible!
*base_common_side = side;
}
}
}
// Note: For connecting segment, process vertices in reversed order.
*con_common_side = -1;
// Find side in connecting segment which contains the two global vertex ids.
for (side=0; side<MAX_SIDES_PER_SEGMENT; side++) {
if (side != con_side) {
con_vp = Side_to_verts[side];
for (v0=0; v0<4; v0++)
if (((con_seg->verts[(int) con_vp[(v0 + 1) % 4]] == abs_id1) && (con_seg->verts[(int) con_vp[v0]] == abs_id2)) || ((con_seg->verts[(int) con_vp[(v0 + 1) % 4]] == abs_id2) && (con_seg->verts[(int) con_vp[v0]] == abs_id1))) {
Assert(*con_common_side == -1); // This means two different sides shared the same edge with con_side == impossible!
*con_common_side = side;
}
}
}
Assert((*base_common_side != -1) && (*con_common_side != -1));
}
// -----------------------------------------------------------------------------
// Propagate texture map u,v coordinates from base_seg:base_side to con_seg:con_side.
// The two vertices abs_id1 and abs_id2 are the only two vertices common to the two sides.
// If uv_only_flag is 1, then don't assign texture map ids, only update the uv coordinates
// If uv_only_flag is -1, then ONLY assign texture map ids, don't update the uv coordinates
void propagate_tmaps_to_segment_side(segment *base_seg, int base_side, segment *con_seg, int con_side, int abs_id1, int abs_id2, int uv_only_flag)
{
int base_common_side,con_common_side;
int tmap_num;
Assert ((uv_only_flag == -1) || (uv_only_flag == 0) || (uv_only_flag == 1));
// Set base_common_side = side in base_seg which contains edge abs_id1:abs_id2
// Set con_common_side = side in con_seg which contains edge abs_id1:abs_id2
if (base_seg != con_seg)
get_side_ids(base_seg, con_seg, base_side, con_side, abs_id1, abs_id2, &base_common_side, &con_common_side);
else {
base_common_side = base_side;
con_common_side = con_side;
}
// Now, all faces in con_seg which are on side con_common_side get their tmap_num set to whatever tmap is assigned
// to whatever face I find which is on side base_common_side.
// First, find tmap_num for base_common_side. If it doesn't exist (ie, there is a connection there), look at the segment
// that is connected through it.
if (!IS_CHILD(con_seg->children[con_common_side])) {
if (!IS_CHILD(base_seg->children[base_common_side])) {
// There is at least one face here, so get the tmap_num from there.
tmap_num = base_seg->sides[base_common_side].tmap_num;
// Now assign all faces in the connecting segment on side con_common_side to tmap_num.
if ((uv_only_flag == -1) || (uv_only_flag == 0))
con_seg->sides[con_common_side].tmap_num = tmap_num;
if (uv_only_flag != -1)
med_assign_uvs_to_side(con_seg, con_common_side, base_seg, base_common_side, abs_id1, abs_id2);
} else { // There are no faces here, there is a connection, trace through the connection.
int cside;
cside = find_connect_side(base_seg, &Segments[base_seg->children[base_common_side]]);
propagate_tmaps_to_segment_side(&Segments[base_seg->children[base_common_side]], cside, con_seg, con_side, abs_id1, abs_id2, uv_only_flag);
}
}
}
sbyte Edge_between_sides[MAX_SIDES_PER_SEGMENT][MAX_SIDES_PER_SEGMENT][2] = {
// left top right bottom back front
{ {-1,-1}, { 3, 7}, {-1,-1}, { 2, 6}, { 6, 7}, { 2, 3} }, // left
{ { 3, 7}, {-1,-1}, { 0, 4}, {-1,-1}, { 4, 7}, { 0, 3} }, // top
{ {-1,-1}, { 0, 4}, {-1,-1}, { 1, 5}, { 4, 5}, { 0, 1} }, // right
{ { 2, 6}, {-1,-1}, { 1, 5}, {-1,-1}, { 5, 6}, { 1, 2} }, // bottom
{ { 6, 7}, { 4, 7}, { 4, 5}, { 5, 6}, {-1,-1}, {-1,-1} }, // back
{ { 2, 3}, { 0, 3}, { 0, 1}, { 1, 2}, {-1,-1}, {-1,-1} }}; // front
// -----------------------------------------------------------------------------
// Propagate texture map u,v coordinates to base_seg:back_side from base_seg:some-other-side
// There is no easy way to figure out which side is adjacent to another side along some edge, so we do a bit of searching.
void med_propagate_tmaps_to_back_side(segment *base_seg, int back_side, int uv_only_flag)
{
int v1=0,v2=0;
int s,ss,tmap_num,back_side_tmap;
if (IS_CHILD(base_seg->children[back_side]))
return; // connection, so no sides here.
// Scan all sides, look for an occupied side which is not back_side or Side_opposite[back_side]
for (s=0; s<MAX_SIDES_PER_SEGMENT; s++)
if ((s != back_side) && (s != Side_opposite[back_side])) {
v1 = Edge_between_sides[s][back_side][0];
v2 = Edge_between_sides[s][back_side][1];
goto found1;
}
Assert(0); // Error -- couldn't find edge != back_side and Side_opposite[back_side]
found1: ;
Assert( (v1 != -1) && (v2 != -1)); // This means there was no shared edge between the two sides.
propagate_tmaps_to_segment_side(base_seg, s, base_seg, back_side, base_seg->verts[v1], base_seg->verts[v2], uv_only_flag);
// Assign an unused tmap id to the back side.
// Note that this can get undone by the caller if this was not part of a new attach, but a rotation or a scale (which
// both do attaches).
// First see if tmap on back side is anywhere else.
if (!uv_only_flag) {
back_side_tmap = base_seg->sides[back_side].tmap_num;
for (s=0; s<MAX_SIDES_PER_SEGMENT; s++) {
if (s != back_side)
if (base_seg->sides[s].tmap_num == back_side_tmap) {
for (tmap_num=0; tmap_num < MAX_SIDES_PER_SEGMENT; tmap_num++) {
for (ss=0; ss<MAX_SIDES_PER_SEGMENT; ss++)
if (ss != back_side)
if (base_seg->sides[ss].tmap_num == New_segment.sides[tmap_num].tmap_num)
goto found2; // current texture map (tmap_num) is used on current (ss) side, so try next one
// Current texture map (tmap_num) has not been used, assign to all faces on back_side.
base_seg->sides[back_side].tmap_num = New_segment.sides[tmap_num].tmap_num;
goto done1;
found2: ;
}
}
}
done1: ;
}
}
int fix_bogus_uvs_on_side(void)
{
med_propagate_tmaps_to_back_side(Cursegp, Curside, 1);
return 0;
}
void fix_bogus_uvs_on_side1(segment *sp, int sidenum, int uvonly_flag)
{
side *sidep = &sp->sides[sidenum];
if ((sidep->uvls[0].u == 0) && (sidep->uvls[1].u == 0) && (sidep->uvls[2].u == 0)) {
med_propagate_tmaps_to_back_side(sp, sidenum, uvonly_flag);
}
}
void fix_bogus_uvs_seg(segment *segp)
{
int s;
for (s=0; s<MAX_SIDES_PER_SEGMENT; s++) {
if (!IS_CHILD(segp->children[s]))
fix_bogus_uvs_on_side1(segp, s, 1);
}
}
int fix_bogus_uvs_all(void)
{
int seg;
for (seg=0; seg<=Highest_segment_index; seg++)
if (Segments[seg].segnum != -1)
fix_bogus_uvs_seg(&Segments[seg]);
return 0;
}
// -----------------------------------------------------------------------------
// Propagate texture map u,v coordinates to base_seg:back_side from base_seg:some-other-side
// There is no easy way to figure out which side is adjacent to another side along some edge, so we do a bit of searching.
void med_propagate_tmaps_to_any_side(segment *base_seg, int back_side, int tmap_num, int uv_only_flag)
{
int v1=0,v2=0;
int s;
// Scan all sides, look for an occupied side which is not back_side or Side_opposite[back_side]
for (s=0; s<MAX_SIDES_PER_SEGMENT; s++)
if ((s != back_side) && (s != Side_opposite[back_side])) {
v1 = Edge_between_sides[s][back_side][0];
v2 = Edge_between_sides[s][back_side][1];
goto found1;
}
Assert(0); // Error -- couldn't find edge != back_side and Side_opposite[back_side]
found1: ;
Assert( (v1 != -1) && (v2 != -1)); // This means there was no shared edge between the two sides.
propagate_tmaps_to_segment_side(base_seg, s, base_seg, back_side, base_seg->verts[v1], base_seg->verts[v2], uv_only_flag);
base_seg->sides[back_side].tmap_num = tmap_num;
}
// -----------------------------------------------------------------------------
// Segment base_seg is connected through side base_side to segment con_seg on con_side.
// For all walls in con_seg, find the wall in base_seg which shares an edge. Copy tmap_num
// from that side in base_seg to the wall in con_seg. If the wall in base_seg is not present
// (ie, there is another segment connected through it), follow the connection through that
// segment to get the wall in the connected segment which shares the edge, and get tmap_num from there.
void propagate_tmaps_to_segment_sides(segment *base_seg, int base_side, segment *con_seg, int con_side, int uv_only_flag)
{
sbyte *base_vp;
int abs_id1,abs_id2;
int v;
base_vp = Side_to_verts[base_side];
// Do for each edge on connecting face.
for (v=0; v<4; v++) {
abs_id1 = base_seg->verts[(int) base_vp[v]];
abs_id2 = base_seg->verts[(int) base_vp[(v+1) % 4]];
propagate_tmaps_to_segment_side(base_seg, base_side, con_seg, con_side, abs_id1, abs_id2, uv_only_flag);
}
}
// -----------------------------------------------------------------------------
// Propagate texture maps in base_seg to con_seg.
// For each wall in con_seg, find the wall in base_seg which shared an edge. Copy tmap_num from that
// wall in base_seg to the wall in con_seg. If the wall in base_seg is not present, then look at the
// segment connected through base_seg through the wall. The wall with a common edge is the new wall
// of interest. Continue searching in this way until a wall of interest is present.
void med_propagate_tmaps_to_segments(segment *base_seg,segment *con_seg, int uv_only_flag)
{
int s;
for (s=0; s<MAX_SIDES_PER_SEGMENT; s++)
if (base_seg->children[s] == con_seg-Segments)
propagate_tmaps_to_segment_sides(base_seg, s, con_seg, find_connect_side(base_seg, con_seg), uv_only_flag);
con_seg->static_light = base_seg->static_light;
validate_uv_coordinates(con_seg);
}
// -------------------------------------------------------------------------------
// Copy texture map uvs from srcseg to destseg.
// If two segments have different face structure (eg, destseg has two faces on side 3, srcseg has only 1)
// then assign uvs according to side vertex id, not face vertex id.
void copy_uvs_seg_to_seg(segment *destseg,segment *srcseg)
{
int s;
for (s=0; s<MAX_SIDES_PER_SEGMENT; s++) {
destseg->sides[s].tmap_num = srcseg->sides[s].tmap_num;
destseg->sides[s].tmap_num2 = srcseg->sides[s].tmap_num2;
}
destseg->static_light = srcseg->static_light;
}
// _________________________________________________________________________________________________________________________
// Maximum distance between a segment containing light to a segment to receive light.
#define LIGHT_DISTANCE_THRESHOLD (F1_0*80)
fix Magical_light_constant = (F1_0*16);
// int Seg0, Seg1;
//int Bugseg = 27;
typedef struct {
sbyte flag, hit_type;
vms_vector vector;
} hash_info;
#define FVI_HASH_SIZE 8
#define FVI_HASH_AND_MASK (FVI_HASH_SIZE - 1)
// Note: This should be malloced.
// Also, the vector should not be 12 bytes, you should only care about some smaller portion of it.
hash_info fvi_cache[FVI_HASH_SIZE];
int Hash_hits=0, Hash_retries=0, Hash_calcs=0;
// -----------------------------------------------------------------------------------------
// Set light from a light source.
// Light incident on a surface is defined by the light incident at its points.
// Light at a point = K * (V . N) / d
// where:
// K = some magical constant to make everything look good
// V = normalized vector from light source to point
// N = surface normal at point
// d = distance from light source to point
// (Note that the above equation can be simplified to K * (VV . N) / d^2 where VV = non-normalized V)
// Light intensity emitted from a light source is defined to be cast from four points.
// These four points are 1/64 of the way from the corners of the light source to the center
// of its segment. By assuming light is cast from these points, rather than from on the
// light surface itself, light will be properly cast on the light surface. Otherwise, the
// vector V would be the null vector.
// If quick_light set, then don't use find_vector_intersection
void cast_light_from_side(segment *segp, int light_side, fix light_intensity, int quick_light)
{
vms_vector segment_center;
int segnum,sidenum,vertnum, lightnum;
compute_segment_center(&segment_center, segp);
// Do for four lights, one just inside each corner of side containing light.
for (lightnum=0; lightnum<4; lightnum++) {
int light_vertex_num, i;
vms_vector vector_to_center;
vms_vector light_location;
// fix inverse_segment_magnitude;
light_vertex_num = segp->verts[Side_to_verts[light_side][lightnum]];
light_location = Vertices[light_vertex_num];
// New way, 5/8/95: Move towards center irrespective of size of segment.
vm_vec_sub(&vector_to_center, &segment_center, &light_location);
vm_vec_normalize_quick(&vector_to_center);
vm_vec_add2(&light_location, &vector_to_center);
// -- Old way, before 5/8/95 -- // -- This way was kind of dumb. In larger segments, you move LESS towards the center.
// -- Old way, before 5/8/95 -- // Main problem, though, is vertices don't illuminate themselves well in oblong segments because the dot product is small.
// -- Old way, before 5/8/95 -- vm_vec_sub(&vector_to_center, &segment_center, &light_location);
// -- Old way, before 5/8/95 -- inverse_segment_magnitude = fixdiv(F1_0/5, vm_vec_mag(&vector_to_center));
// -- Old way, before 5/8/95 -- vm_vec_scale_add(&light_location, &light_location, &vector_to_center, inverse_segment_magnitude);
for (segnum=0; segnum<=Highest_segment_index; segnum++) {
segment *rsegp = &Segments[segnum];
vms_vector r_segment_center;
fix dist_to_rseg;
for (i=0; i<FVI_HASH_SIZE; i++)
fvi_cache[i].flag = 0;
// efficiency hack (I hope!), for faraway segments, don't check each point.
compute_segment_center(&r_segment_center, rsegp);
dist_to_rseg = vm_vec_dist_quick(&r_segment_center, &segment_center);
if (dist_to_rseg <= LIGHT_DISTANCE_THRESHOLD) {
for (sidenum=0; sidenum<MAX_SIDES_PER_SEGMENT; sidenum++) {
if (WALL_IS_DOORWAY(rsegp, sidenum) != WID_NO_WALL) {
side *rsidep = &rsegp->sides[sidenum];
vms_vector *side_normalp = &rsidep->normals[0]; // kinda stupid? always use vector 0.
for (vertnum=0; vertnum<4; vertnum++) {
fix distance_to_point, light_at_point, light_dot;
vms_vector vert_location, vector_to_light;
int abs_vertnum;
abs_vertnum = rsegp->verts[Side_to_verts[sidenum][vertnum]];
vert_location = Vertices[abs_vertnum];
distance_to_point = vm_vec_dist_quick(&vert_location, &light_location);
vm_vec_sub(&vector_to_light, &light_location, &vert_location);
vm_vec_normalize(&vector_to_light);
// Hack: In oblong segments, it's possible to get a very small dot product
// but the light source is very nearby (eg, illuminating light itself!).
light_dot = vm_vec_dot(&vector_to_light, side_normalp);
if (distance_to_point < F1_0)
if (light_dot > 0)
light_dot = (light_dot + F1_0)/2;
if (light_dot > 0) {
light_at_point = fixdiv(fixmul(light_dot, light_dot), distance_to_point);
light_at_point = fixmul(light_at_point, Magical_light_constant);
if (light_at_point >= 0) {
fvi_info hit_data;
int hit_type;
vms_vector vert_location_1, r_vector_to_center;
fix inverse_segment_magnitude;
vm_vec_sub(&r_vector_to_center, &r_segment_center, &vert_location);
inverse_segment_magnitude = fixdiv(F1_0/3, vm_vec_mag(&r_vector_to_center));
vm_vec_scale_add(&vert_location_1, &vert_location, &r_vector_to_center, inverse_segment_magnitude);
vert_location = vert_location_1;
//if ((segp-Segments == 199) && (rsegp-Segments==199))
// Int3();
// Seg0 = segp-Segments;
// Seg1 = rsegp-Segments;
if (!quick_light) {
int hash_value = Side_to_verts[sidenum][vertnum];
hash_info *hashp = &fvi_cache[hash_value];
while (1) {
if (hashp->flag) {
if ((hashp->vector.x == vector_to_light.x) && (hashp->vector.y == vector_to_light.y) && (hashp->vector.z == vector_to_light.z)) {
hit_type = hashp->hit_type;
Hash_hits++;
break;
} else {
Int3(); // How is this possible? Should be no hits!
Hash_retries++;
hash_value = (hash_value+1) & FVI_HASH_AND_MASK;
hashp = &fvi_cache[hash_value];
}
} else {
fvi_query fq;
Hash_calcs++;
hashp->vector = vector_to_light;
hashp->flag = 1;
fq.p0 = &light_location;
fq.startseg = segp-Segments;
fq.p1 = &vert_location;
fq.rad = 0;
fq.thisobjnum = -1;
fq.ignore_obj_list = NULL;
fq.flags = 0;
hit_type = find_vector_intersection(&fq,&hit_data);
hashp->hit_type = hit_type;
break;
}
}
} else
hit_type = HIT_NONE;
switch (hit_type) {
case HIT_NONE:
light_at_point = fixmul(light_at_point, light_intensity);
rsidep->uvls[vertnum].l += light_at_point;
if (rsidep->uvls[vertnum].l > F1_0)
rsidep->uvls[vertnum].l = F1_0;
break;
case HIT_WALL:
break;
case HIT_OBJECT:
Int3(); // Hit object, should be ignoring objects!
break;
case HIT_BAD_P0:
Int3(); // Ugh, this thing again, what happened, what does it mean?
break;
}
} // end if (light_at_point...
} // end if (light_dot >...
} // end for (vertnum=0...
} // end if (rsegp...
} // end for (sidenum=0...
} // end if (dist_to_rseg...
} // end for (segnum=0...
} // end for (lightnum=0...
}
// ------------------------------------------------------------------------------------------
// Zero all lighting values.
void calim_zero_light_values(void)
{
int segnum, sidenum, vertnum;
for (segnum=0; segnum<=Highest_segment_index; segnum++) {
segment *segp = &Segments[segnum];
for (sidenum=0; sidenum<MAX_SIDES_PER_SEGMENT; sidenum++) {
side *sidep = &segp->sides[sidenum];
for (vertnum=0; vertnum<4; vertnum++)
sidep->uvls[vertnum].l = F1_0/64; // Put a tiny bit of light here.
}
Segments[segnum].static_light = F1_0 / 64;
}
}
// ------------------------------------------------------------------------------------------
// Used in setting average light value in a segment, cast light from a side to the center
// of all segments.
void cast_light_from_side_to_center(segment *segp, int light_side, fix light_intensity, int quick_light)
{
vms_vector segment_center;
int segnum, lightnum;
compute_segment_center(&segment_center, segp);
// Do for four lights, one just inside each corner of side containing light.
for (lightnum=0; lightnum<4; lightnum++) {
int light_vertex_num;
vms_vector vector_to_center;
vms_vector light_location;
light_vertex_num = segp->verts[Side_to_verts[light_side][lightnum]];
light_location = Vertices[light_vertex_num];
vm_vec_sub(&vector_to_center, &segment_center, &light_location);
vm_vec_scale_add(&light_location, &light_location, &vector_to_center, F1_0/64);
for (segnum=0; segnum<=Highest_segment_index; segnum++) {
segment *rsegp = &Segments[segnum];
vms_vector r_segment_center;
fix dist_to_rseg;
//if ((segp == &Segments[Bugseg]) && (rsegp == &Segments[Bugseg]))
// Int3();
compute_segment_center(&r_segment_center, rsegp);
dist_to_rseg = vm_vec_dist_quick(&r_segment_center, &segment_center);
if (dist_to_rseg <= LIGHT_DISTANCE_THRESHOLD) {
fix light_at_point;
if (dist_to_rseg > F1_0)
light_at_point = fixdiv(Magical_light_constant, dist_to_rseg);
else
light_at_point = Magical_light_constant;
if (light_at_point >= 0) {
int hit_type;
if (!quick_light) {
fvi_query fq;
fvi_info hit_data;
fq.p0 = &light_location;
fq.startseg = segp-Segments;
fq.p1 = &r_segment_center;
fq.rad = 0;
fq.thisobjnum = -1;
fq.ignore_obj_list = NULL;
fq.flags = 0;
hit_type = find_vector_intersection(&fq,&hit_data);
}
else
hit_type = HIT_NONE;
switch (hit_type) {
case HIT_NONE:
light_at_point = fixmul(light_at_point, light_intensity);
if (light_at_point >= F1_0)
light_at_point = F1_0-1;
rsegp->static_light += light_at_point;
if (segp->static_light < 0) // if it went negative, saturate
segp->static_light = 0;
break;
case HIT_WALL:
break;
case HIT_OBJECT:
Int3(); // Hit object, should be ignoring objects!
break;
case HIT_BAD_P0:
Int3(); // Ugh, this thing again, what happened, what does it mean?
break;
}
} // end if (light_at_point...
} // end if (dist_to_rseg...
} // end for (segnum=0...
} // end for (lightnum=0...
}
// ------------------------------------------------------------------------------------------
// Process all lights.
void calim_process_all_lights(int quick_light)
{
int segnum, sidenum;
for (segnum=0; segnum<=Highest_segment_index; segnum++) {
segment *segp = &Segments[segnum];
for (sidenum=0; sidenum<MAX_SIDES_PER_SEGMENT; sidenum++) {
// if (!IS_CHILD(segp->children[sidenum])) {
if (WALL_IS_DOORWAY(segp, sidenum) != WID_NO_WALL) {
side *sidep = &segp->sides[sidenum];
fix light_intensity;
light_intensity = TmapInfo[sidep->tmap_num].lighting + TmapInfo[sidep->tmap_num2 & 0x3fff].lighting;
// if (segp->sides[sidenum].wall_num != -1) {
// int wall_num, bitmap_num, effect_num;
// wall_num = segp->sides[sidenum].wall_num;
// effect_num = Walls[wall_num].type;
// bitmap_num = effects_bm_num[effect_num];
//
// light_intensity += TmapInfo[bitmap_num].lighting;
// }
if (light_intensity) {
light_intensity /= 4; // casting light from four spots, so divide by 4.
cast_light_from_side(segp, sidenum, light_intensity, quick_light);
cast_light_from_side_to_center(segp, sidenum, light_intensity, quick_light);
}
}
}
}
}
// ------------------------------------------------------------------------------------------
// Apply static light in mine.
// First, zero all light values.
// Then, for all light sources, cast their light.
void cast_all_light_in_mine(int quick_flag)
{
validate_segment_all();
calim_zero_light_values();
calim_process_all_lights(quick_flag);
}
// int Fvit_num = 1000;
//
// fix find_vector_intersection_test(void)
// {
// int i;
// fvi_info hit_data;
// int p0_seg, p1_seg, this_objnum, ignore_obj, check_obj_flag;
// fix rad;
// int start_time = timer_get_milliseconds();;
// vms_vector p0,p1;
//
// ignore_obj = 1;
// check_obj_flag = 0;
// this_objnum = -1;
// rad = F1_0/4;
//
// for (i=0; i<Fvit_num; i++) {
// p0_seg = d_rand()*(Highest_segment_index+1)/32768;
// compute_segment_center(&p0, &Segments[p0_seg]);
//
// p1_seg = d_rand()*(Highest_segment_index+1)/32768;
// compute_segment_center(&p1, &Segments[p1_seg]);
//
// find_vector_intersection(&hit_data, &p0, p0_seg, &p1, rad, this_objnum, ignore_obj, check_obj_flag);
// }
//
// return timer_get_milliseconds() - start_time;
// }
vms_vector Normals[MAX_SEGMENTS*12];
int Normal_nearness = 4;
int normal_near(vms_vector *v1, vms_vector *v2)
{
if (abs(v1->x - v2->x) < Normal_nearness)
if (abs(v1->y - v2->y) < Normal_nearness)
if (abs(v1->z - v2->z) < Normal_nearness)
return 1;
return 0;
}
int Total_normals=0;
int Diff_normals=0;
void print_normals(void)
{
int i,j,s,n,nn;
// vms_vector *normal;
int num_normals=0;
Total_normals = 0;
Diff_normals = 0;
for (i=0; i<=Highest_segment_index; i++)
for (s=0; s<6; s++) {
if (Segments[i].sides[s].type == SIDE_IS_QUAD)
nn=1;
else
nn=2;
for (n=0; n<nn; n++) {
for (j=0; j<num_normals; j++)
if (normal_near(&Segments[i].sides[s].normals[n],&Normals[j]))
break;
if (j == num_normals) {
Normals[num_normals++] = Segments[i].sides[s].normals[n];
Diff_normals++;
}
Total_normals++;
}
}
}
Reference in a new issue View git blame Copy permalink