mirror of
https://github.com/ReactionQuake3/reaction.git
synced 2024-11-22 12:22:12 +00:00
761 lines
19 KiB
C
761 lines
19 KiB
C
/*
|
|
===========================================================================
|
|
Copyright (C) 1999-2005 Id Software, Inc.
|
|
|
|
This file is part of Quake III Arena source code.
|
|
|
|
Quake III Arena source code is free software; you can redistribute it
|
|
and/or modify it under the terms of the GNU General Public License as
|
|
published by the Free Software Foundation; either version 2 of the License,
|
|
or (at your option) any later version.
|
|
|
|
Quake III Arena source code is distributed in the hope that it will be
|
|
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with Quake III Arena source code; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
===========================================================================
|
|
*/
|
|
|
|
#include "tr_local.h"
|
|
|
|
/*
|
|
|
|
This file does all of the processing necessary to turn a raw grid of points
|
|
read from the map file into a srfBspSurface_t ready for rendering.
|
|
|
|
The level of detail solution is direction independent, based only on subdivided
|
|
distance from the true curve.
|
|
|
|
Only a single entry point:
|
|
|
|
srfBspSurface_t *R_SubdividePatchToGrid( int width, int height,
|
|
srfVert_t points[MAX_PATCH_SIZE*MAX_PATCH_SIZE] ) {
|
|
|
|
*/
|
|
|
|
|
|
/*
|
|
============
|
|
LerpDrawVert
|
|
============
|
|
*/
|
|
static void LerpDrawVert( srfVert_t *a, srfVert_t *b, srfVert_t *out ) {
|
|
out->xyz[0] = 0.5f * (a->xyz[0] + b->xyz[0]);
|
|
out->xyz[1] = 0.5f * (a->xyz[1] + b->xyz[1]);
|
|
out->xyz[2] = 0.5f * (a->xyz[2] + b->xyz[2]);
|
|
|
|
out->st[0] = 0.5f * (a->st[0] + b->st[0]);
|
|
out->st[1] = 0.5f * (a->st[1] + b->st[1]);
|
|
|
|
out->lightmap[0] = 0.5f * (a->lightmap[0] + b->lightmap[0]);
|
|
out->lightmap[1] = 0.5f * (a->lightmap[1] + b->lightmap[1]);
|
|
|
|
out->vertexColors[0] = 0.5f * (a->vertexColors[0] + b->vertexColors[0]);
|
|
out->vertexColors[1] = 0.5f * (a->vertexColors[1] + b->vertexColors[1]);
|
|
out->vertexColors[2] = 0.5f * (a->vertexColors[2] + b->vertexColors[2]);
|
|
out->vertexColors[3] = 0.5f * (a->vertexColors[3] + b->vertexColors[3]);
|
|
}
|
|
|
|
/*
|
|
============
|
|
Transpose
|
|
============
|
|
*/
|
|
static void Transpose( int width, int height, srfVert_t ctrl[MAX_GRID_SIZE][MAX_GRID_SIZE] ) {
|
|
int i, j;
|
|
srfVert_t temp;
|
|
|
|
if ( width > height ) {
|
|
for ( i = 0 ; i < height ; i++ ) {
|
|
for ( j = i + 1 ; j < width ; j++ ) {
|
|
if ( j < height ) {
|
|
// swap the value
|
|
temp = ctrl[j][i];
|
|
ctrl[j][i] = ctrl[i][j];
|
|
ctrl[i][j] = temp;
|
|
} else {
|
|
// just copy
|
|
ctrl[j][i] = ctrl[i][j];
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
for ( i = 0 ; i < width ; i++ ) {
|
|
for ( j = i + 1 ; j < height ; j++ ) {
|
|
if ( j < width ) {
|
|
// swap the value
|
|
temp = ctrl[i][j];
|
|
ctrl[i][j] = ctrl[j][i];
|
|
ctrl[j][i] = temp;
|
|
} else {
|
|
// just copy
|
|
ctrl[i][j] = ctrl[j][i];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
=================
|
|
MakeMeshNormals
|
|
|
|
Handles all the complicated wrapping and degenerate cases
|
|
=================
|
|
*/
|
|
static void MakeMeshNormals( int width, int height, srfVert_t ctrl[MAX_GRID_SIZE][MAX_GRID_SIZE] ) {
|
|
int i, j, k, dist;
|
|
vec3_t normal;
|
|
vec3_t sum;
|
|
int count = 0;
|
|
vec3_t base;
|
|
vec3_t delta;
|
|
int x, y;
|
|
srfVert_t *dv;
|
|
vec3_t around[8], temp;
|
|
qboolean good[8];
|
|
qboolean wrapWidth, wrapHeight;
|
|
float len;
|
|
static int neighbors[8][2] = {
|
|
{0,1}, {1,1}, {1,0}, {1,-1}, {0,-1}, {-1,-1}, {-1,0}, {-1,1}
|
|
};
|
|
|
|
wrapWidth = qfalse;
|
|
for ( i = 0 ; i < height ; i++ ) {
|
|
VectorSubtract( ctrl[i][0].xyz, ctrl[i][width-1].xyz, delta );
|
|
len = VectorLengthSquared( delta );
|
|
if ( len > 1.0 ) {
|
|
break;
|
|
}
|
|
}
|
|
if ( i == height ) {
|
|
wrapWidth = qtrue;
|
|
}
|
|
|
|
wrapHeight = qfalse;
|
|
for ( i = 0 ; i < width ; i++ ) {
|
|
VectorSubtract( ctrl[0][i].xyz, ctrl[height-1][i].xyz, delta );
|
|
len = VectorLengthSquared( delta );
|
|
if ( len > 1.0 ) {
|
|
break;
|
|
}
|
|
}
|
|
if ( i == width) {
|
|
wrapHeight = qtrue;
|
|
}
|
|
|
|
|
|
for ( i = 0 ; i < width ; i++ ) {
|
|
for ( j = 0 ; j < height ; j++ ) {
|
|
count = 0;
|
|
dv = &ctrl[j][i];
|
|
VectorCopy( dv->xyz, base );
|
|
for ( k = 0 ; k < 8 ; k++ ) {
|
|
VectorClear( around[k] );
|
|
good[k] = qfalse;
|
|
|
|
for ( dist = 1 ; dist <= 3 ; dist++ ) {
|
|
x = i + neighbors[k][0] * dist;
|
|
y = j + neighbors[k][1] * dist;
|
|
if ( wrapWidth ) {
|
|
if ( x < 0 ) {
|
|
x = width - 1 + x;
|
|
} else if ( x >= width ) {
|
|
x = 1 + x - width;
|
|
}
|
|
}
|
|
if ( wrapHeight ) {
|
|
if ( y < 0 ) {
|
|
y = height - 1 + y;
|
|
} else if ( y >= height ) {
|
|
y = 1 + y - height;
|
|
}
|
|
}
|
|
|
|
if ( x < 0 || x >= width || y < 0 || y >= height ) {
|
|
break; // edge of patch
|
|
}
|
|
VectorSubtract( ctrl[y][x].xyz, base, temp );
|
|
if ( VectorNormalize2( temp, temp ) == 0 ) {
|
|
continue; // degenerate edge, get more dist
|
|
} else {
|
|
good[k] = qtrue;
|
|
VectorCopy( temp, around[k] );
|
|
break; // good edge
|
|
}
|
|
}
|
|
}
|
|
|
|
VectorClear( sum );
|
|
for ( k = 0 ; k < 8 ; k++ ) {
|
|
if ( !good[k] || !good[(k+1)&7] ) {
|
|
continue; // didn't get two points
|
|
}
|
|
CrossProduct( around[(k+1)&7], around[k], normal );
|
|
if ( VectorNormalize2( normal, normal ) == 0 ) {
|
|
continue;
|
|
}
|
|
VectorAdd( normal, sum, sum );
|
|
count++;
|
|
}
|
|
//if ( count == 0 ) {
|
|
// printf("bad normal\n");
|
|
//}
|
|
VectorNormalize2( sum, dv->normal );
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef USE_VERT_TANGENT_SPACE
|
|
static void MakeMeshTangentVectors(int width, int height, srfVert_t ctrl[MAX_GRID_SIZE][MAX_GRID_SIZE], int numIndexes,
|
|
glIndex_t indexes[(MAX_GRID_SIZE-1)*(MAX_GRID_SIZE-1)*2*3])
|
|
{
|
|
int i, j;
|
|
srfVert_t *dv[3];
|
|
static srfVert_t ctrl2[MAX_GRID_SIZE * MAX_GRID_SIZE];
|
|
glIndex_t *tri;
|
|
|
|
// FIXME: use more elegant way
|
|
for(i = 0; i < width; i++)
|
|
{
|
|
for(j = 0; j < height; j++)
|
|
{
|
|
dv[0] = &ctrl2[j * width + i];
|
|
*dv[0] = ctrl[j][i];
|
|
}
|
|
}
|
|
|
|
for(i = 0, tri = indexes; i < numIndexes; i += 3, tri += 3)
|
|
{
|
|
dv[0] = &ctrl2[tri[0]];
|
|
dv[1] = &ctrl2[tri[1]];
|
|
dv[2] = &ctrl2[tri[2]];
|
|
|
|
R_CalcTangentVectors(dv);
|
|
}
|
|
|
|
for(i = 0; i < width; i++)
|
|
{
|
|
for(j = 0; j < height; j++)
|
|
{
|
|
dv[0] = &ctrl2[j * width + i];
|
|
dv[1] = &ctrl[j][i];
|
|
|
|
VectorCopy4(dv[0]->tangent, dv[1]->tangent);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
static int MakeMeshIndexes(int width, int height, srfVert_t ctrl[MAX_GRID_SIZE][MAX_GRID_SIZE],
|
|
glIndex_t indexes[(MAX_GRID_SIZE-1)*(MAX_GRID_SIZE-1)*2*3])
|
|
{
|
|
int i, j;
|
|
int numIndexes;
|
|
int w, h;
|
|
srfVert_t *dv;
|
|
static srfVert_t ctrl2[MAX_GRID_SIZE * MAX_GRID_SIZE];
|
|
|
|
h = height - 1;
|
|
w = width - 1;
|
|
numIndexes = 0;
|
|
for(i = 0; i < h; i++)
|
|
{
|
|
for(j = 0; j < w; j++)
|
|
{
|
|
int v1, v2, v3, v4;
|
|
|
|
// vertex order to be reckognized as tristrips
|
|
v1 = i * width + j + 1;
|
|
v2 = v1 - 1;
|
|
v3 = v2 + width;
|
|
v4 = v3 + 1;
|
|
|
|
indexes[numIndexes++] = v2;
|
|
indexes[numIndexes++] = v3;
|
|
indexes[numIndexes++] = v1;
|
|
|
|
indexes[numIndexes++] = v1;
|
|
indexes[numIndexes++] = v3;
|
|
indexes[numIndexes++] = v4;
|
|
}
|
|
}
|
|
|
|
// FIXME: use more elegant way
|
|
for(i = 0; i < width; i++)
|
|
{
|
|
for(j = 0; j < height; j++)
|
|
{
|
|
dv = &ctrl2[j * width + i];
|
|
*dv = ctrl[j][i];
|
|
}
|
|
}
|
|
|
|
return numIndexes;
|
|
}
|
|
|
|
|
|
/*
|
|
============
|
|
InvertCtrl
|
|
============
|
|
*/
|
|
static void InvertCtrl( int width, int height, srfVert_t ctrl[MAX_GRID_SIZE][MAX_GRID_SIZE] ) {
|
|
int i, j;
|
|
srfVert_t temp;
|
|
|
|
for ( i = 0 ; i < height ; i++ ) {
|
|
for ( j = 0 ; j < width/2 ; j++ ) {
|
|
temp = ctrl[i][j];
|
|
ctrl[i][j] = ctrl[i][width-1-j];
|
|
ctrl[i][width-1-j] = temp;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
=================
|
|
InvertErrorTable
|
|
=================
|
|
*/
|
|
static void InvertErrorTable( float errorTable[2][MAX_GRID_SIZE], int width, int height ) {
|
|
int i;
|
|
float copy[2][MAX_GRID_SIZE];
|
|
|
|
Com_Memcpy( copy, errorTable, sizeof( copy ) );
|
|
|
|
for ( i = 0 ; i < width ; i++ ) {
|
|
errorTable[1][i] = copy[0][i]; //[width-1-i];
|
|
}
|
|
|
|
for ( i = 0 ; i < height ; i++ ) {
|
|
errorTable[0][i] = copy[1][height-1-i];
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
==================
|
|
PutPointsOnCurve
|
|
==================
|
|
*/
|
|
static void PutPointsOnCurve( srfVert_t ctrl[MAX_GRID_SIZE][MAX_GRID_SIZE],
|
|
int width, int height ) {
|
|
int i, j;
|
|
srfVert_t prev, next;
|
|
|
|
for ( i = 0 ; i < width ; i++ ) {
|
|
for ( j = 1 ; j < height ; j += 2 ) {
|
|
LerpDrawVert( &ctrl[j][i], &ctrl[j+1][i], &prev );
|
|
LerpDrawVert( &ctrl[j][i], &ctrl[j-1][i], &next );
|
|
LerpDrawVert( &prev, &next, &ctrl[j][i] );
|
|
}
|
|
}
|
|
|
|
|
|
for ( j = 0 ; j < height ; j++ ) {
|
|
for ( i = 1 ; i < width ; i += 2 ) {
|
|
LerpDrawVert( &ctrl[j][i], &ctrl[j][i+1], &prev );
|
|
LerpDrawVert( &ctrl[j][i], &ctrl[j][i-1], &next );
|
|
LerpDrawVert( &prev, &next, &ctrl[j][i] );
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
=================
|
|
R_CreateSurfaceGridMesh
|
|
=================
|
|
*/
|
|
srfBspSurface_t *R_CreateSurfaceGridMesh(int width, int height,
|
|
srfVert_t ctrl[MAX_GRID_SIZE][MAX_GRID_SIZE], float errorTable[2][MAX_GRID_SIZE],
|
|
int numIndexes, glIndex_t indexes[(MAX_GRID_SIZE-1)*(MAX_GRID_SIZE-1)*2*3]) {
|
|
int i, j, size;
|
|
srfVert_t *vert;
|
|
vec3_t tmpVec;
|
|
srfBspSurface_t *grid;
|
|
|
|
// copy the results out to a grid
|
|
size = (width * height - 1) * sizeof( srfVert_t ) + sizeof( *grid );
|
|
|
|
#ifdef PATCH_STITCHING
|
|
grid = /*ri.Hunk_Alloc*/ ri.Malloc( size );
|
|
Com_Memset(grid, 0, size);
|
|
|
|
grid->widthLodError = /*ri.Hunk_Alloc*/ ri.Malloc( width * 4 );
|
|
Com_Memcpy( grid->widthLodError, errorTable[0], width * 4 );
|
|
|
|
grid->heightLodError = /*ri.Hunk_Alloc*/ ri.Malloc( height * 4 );
|
|
Com_Memcpy( grid->heightLodError, errorTable[1], height * 4 );
|
|
|
|
grid->numIndexes = numIndexes;
|
|
grid->indexes = ri.Malloc(grid->numIndexes * sizeof(glIndex_t));
|
|
Com_Memcpy(grid->indexes, indexes, numIndexes * sizeof(glIndex_t));
|
|
|
|
grid->numVerts = (width * height);
|
|
grid->verts = ri.Malloc(grid->numVerts * sizeof(srfVert_t));
|
|
#else
|
|
grid = ri.Hunk_Alloc( size );
|
|
Com_Memset(grid, 0, size);
|
|
|
|
grid->widthLodError = ri.Hunk_Alloc( width * 4 );
|
|
Com_Memcpy( grid->widthLodError, errorTable[0], width * 4 );
|
|
|
|
grid->heightLodError = ri.Hunk_Alloc( height * 4 );
|
|
Com_Memcpy( grid->heightLodError, errorTable[1], height * 4 );
|
|
|
|
grid->numIndexes = numIndexes;
|
|
grid->indexes = ri.Hunk_Alloc(grid->numIndexes * sizeof(glIndex_t), h_low);
|
|
Com_Memcpy(grid->indexes, indexes, numIndexes * sizeof(glIndex_t));
|
|
|
|
grid->numVerts = (width * height);
|
|
grid->verts = ri.Hunk_Alloc(grid->numVerts * sizeof(srfVert_t), h_low);
|
|
#endif
|
|
|
|
grid->width = width;
|
|
grid->height = height;
|
|
grid->surfaceType = SF_GRID;
|
|
ClearBounds( grid->cullBounds[0], grid->cullBounds[1] );
|
|
for ( i = 0 ; i < width ; i++ ) {
|
|
for ( j = 0 ; j < height ; j++ ) {
|
|
vert = &grid->verts[j*width+i];
|
|
*vert = ctrl[j][i];
|
|
AddPointToBounds( vert->xyz, grid->cullBounds[0], grid->cullBounds[1] );
|
|
}
|
|
}
|
|
|
|
// compute local origin and bounds
|
|
VectorAdd( grid->cullBounds[0], grid->cullBounds[1], grid->cullOrigin );
|
|
VectorScale( grid->cullOrigin, 0.5f, grid->cullOrigin );
|
|
VectorSubtract( grid->cullBounds[0], grid->cullOrigin, tmpVec );
|
|
grid->cullRadius = VectorLength( tmpVec );
|
|
|
|
VectorCopy( grid->cullOrigin, grid->lodOrigin );
|
|
grid->lodRadius = grid->cullRadius;
|
|
//
|
|
return grid;
|
|
}
|
|
|
|
/*
|
|
=================
|
|
R_FreeSurfaceGridMesh
|
|
=================
|
|
*/
|
|
void R_FreeSurfaceGridMesh( srfBspSurface_t *grid ) {
|
|
ri.Free(grid->widthLodError);
|
|
ri.Free(grid->heightLodError);
|
|
ri.Free(grid->indexes);
|
|
ri.Free(grid->verts);
|
|
ri.Free(grid);
|
|
}
|
|
|
|
/*
|
|
=================
|
|
R_SubdividePatchToGrid
|
|
=================
|
|
*/
|
|
srfBspSurface_t *R_SubdividePatchToGrid( int width, int height,
|
|
srfVert_t points[MAX_PATCH_SIZE*MAX_PATCH_SIZE] ) {
|
|
int i, j, k, l;
|
|
srfVert_t_cleared( prev );
|
|
srfVert_t_cleared( next );
|
|
srfVert_t_cleared( mid );
|
|
float len, maxLen;
|
|
int dir;
|
|
int t;
|
|
srfVert_t ctrl[MAX_GRID_SIZE][MAX_GRID_SIZE];
|
|
float errorTable[2][MAX_GRID_SIZE];
|
|
int numIndexes;
|
|
static glIndex_t indexes[(MAX_GRID_SIZE-1)*(MAX_GRID_SIZE-1)*2*3];
|
|
int consecutiveComplete;
|
|
|
|
for ( i = 0 ; i < width ; i++ ) {
|
|
for ( j = 0 ; j < height ; j++ ) {
|
|
ctrl[j][i] = points[j*width+i];
|
|
}
|
|
}
|
|
|
|
for ( dir = 0 ; dir < 2 ; dir++ ) {
|
|
|
|
for ( j = 0 ; j < MAX_GRID_SIZE ; j++ ) {
|
|
errorTable[dir][j] = 0;
|
|
}
|
|
|
|
consecutiveComplete = 0;
|
|
|
|
// horizontal subdivisions
|
|
for ( j = 0 ; ; j = (j + 2) % (width - 1) ) {
|
|
// check subdivided midpoints against control points
|
|
|
|
// FIXME: also check midpoints of adjacent patches against the control points
|
|
// this would basically stitch all patches in the same LOD group together.
|
|
|
|
maxLen = 0;
|
|
for ( i = 0 ; i < height ; i++ ) {
|
|
vec3_t midxyz;
|
|
vec3_t midxyz2;
|
|
vec3_t dir;
|
|
vec3_t projected;
|
|
float d;
|
|
|
|
// calculate the point on the curve
|
|
for ( l = 0 ; l < 3 ; l++ ) {
|
|
midxyz[l] = (ctrl[i][j].xyz[l] + ctrl[i][j+1].xyz[l] * 2
|
|
+ ctrl[i][j+2].xyz[l] ) * 0.25f;
|
|
}
|
|
|
|
// see how far off the line it is
|
|
// using dist-from-line will not account for internal
|
|
// texture warping, but it gives a lot less polygons than
|
|
// dist-from-midpoint
|
|
VectorSubtract( midxyz, ctrl[i][j].xyz, midxyz );
|
|
VectorSubtract( ctrl[i][j+2].xyz, ctrl[i][j].xyz, dir );
|
|
VectorNormalize( dir );
|
|
|
|
d = DotProduct( midxyz, dir );
|
|
VectorScale( dir, d, projected );
|
|
VectorSubtract( midxyz, projected, midxyz2);
|
|
len = VectorLengthSquared( midxyz2 ); // we will do the sqrt later
|
|
if ( len > maxLen ) {
|
|
maxLen = len;
|
|
}
|
|
}
|
|
|
|
maxLen = sqrt(maxLen);
|
|
|
|
// if all the points are on the lines, remove the entire columns
|
|
if ( maxLen < 0.1f ) {
|
|
errorTable[dir][j+1] = 999;
|
|
// if we go over the whole grid twice without adding any columns, stop
|
|
if (++consecutiveComplete >= width)
|
|
break;
|
|
continue;
|
|
}
|
|
|
|
// see if we want to insert subdivided columns
|
|
if ( width + 2 > MAX_GRID_SIZE ) {
|
|
errorTable[dir][j+1] = 1.0f/maxLen;
|
|
break; // can't subdivide any more
|
|
}
|
|
|
|
if ( maxLen <= r_subdivisions->value ) {
|
|
errorTable[dir][j+1] = 1.0f/maxLen;
|
|
// if we go over the whole grid twice without adding any columns, stop
|
|
if (++consecutiveComplete >= width)
|
|
break;
|
|
continue; // didn't need subdivision
|
|
}
|
|
|
|
errorTable[dir][j+2] = 1.0f/maxLen;
|
|
|
|
consecutiveComplete = 0;
|
|
|
|
// insert two columns and replace the peak
|
|
width += 2;
|
|
for ( i = 0 ; i < height ; i++ ) {
|
|
LerpDrawVert( &ctrl[i][j], &ctrl[i][j+1], &prev );
|
|
LerpDrawVert( &ctrl[i][j+1], &ctrl[i][j+2], &next );
|
|
LerpDrawVert( &prev, &next, &mid );
|
|
|
|
for ( k = width - 1 ; k > j + 3 ; k-- ) {
|
|
ctrl[i][k] = ctrl[i][k-2];
|
|
}
|
|
ctrl[i][j + 1] = prev;
|
|
ctrl[i][j + 2] = mid;
|
|
ctrl[i][j + 3] = next;
|
|
}
|
|
|
|
// skip the new one, we'll get it on the next pass
|
|
j += 2;
|
|
}
|
|
|
|
Transpose( width, height, ctrl );
|
|
t = width;
|
|
width = height;
|
|
height = t;
|
|
}
|
|
|
|
|
|
// put all the aproximating points on the curve
|
|
PutPointsOnCurve( ctrl, width, height );
|
|
|
|
// cull out any rows or columns that are colinear
|
|
for ( i = 1 ; i < width-1 ; i++ ) {
|
|
if ( errorTable[0][i] != 999 ) {
|
|
continue;
|
|
}
|
|
for ( j = i+1 ; j < width ; j++ ) {
|
|
for ( k = 0 ; k < height ; k++ ) {
|
|
ctrl[k][j-1] = ctrl[k][j];
|
|
}
|
|
errorTable[0][j-1] = errorTable[0][j];
|
|
}
|
|
width--;
|
|
}
|
|
|
|
for ( i = 1 ; i < height-1 ; i++ ) {
|
|
if ( errorTable[1][i] != 999 ) {
|
|
continue;
|
|
}
|
|
for ( j = i+1 ; j < height ; j++ ) {
|
|
for ( k = 0 ; k < width ; k++ ) {
|
|
ctrl[j-1][k] = ctrl[j][k];
|
|
}
|
|
errorTable[1][j-1] = errorTable[1][j];
|
|
}
|
|
height--;
|
|
}
|
|
|
|
#if 1
|
|
// flip for longest tristrips as an optimization
|
|
// the results should be visually identical with or
|
|
// without this step
|
|
if ( height > width ) {
|
|
Transpose( width, height, ctrl );
|
|
InvertErrorTable( errorTable, width, height );
|
|
t = width;
|
|
width = height;
|
|
height = t;
|
|
InvertCtrl( width, height, ctrl );
|
|
}
|
|
#endif
|
|
|
|
// calculate indexes
|
|
numIndexes = MakeMeshIndexes(width, height, ctrl, indexes);
|
|
|
|
// calculate normals
|
|
MakeMeshNormals( width, height, ctrl );
|
|
#ifdef USE_VERT_TANGENT_SPACE
|
|
MakeMeshTangentVectors(width, height, ctrl, numIndexes, indexes);
|
|
#endif
|
|
|
|
return R_CreateSurfaceGridMesh(width, height, ctrl, errorTable, numIndexes, indexes);
|
|
}
|
|
|
|
/*
|
|
===============
|
|
R_GridInsertColumn
|
|
===============
|
|
*/
|
|
srfBspSurface_t *R_GridInsertColumn( srfBspSurface_t *grid, int column, int row, vec3_t point, float loderror ) {
|
|
int i, j;
|
|
int width, height, oldwidth;
|
|
srfVert_t ctrl[MAX_GRID_SIZE][MAX_GRID_SIZE];
|
|
float errorTable[2][MAX_GRID_SIZE];
|
|
float lodRadius;
|
|
vec3_t lodOrigin;
|
|
int numIndexes;
|
|
static glIndex_t indexes[(MAX_GRID_SIZE-1)*(MAX_GRID_SIZE-1)*2*3];
|
|
|
|
oldwidth = 0;
|
|
width = grid->width + 1;
|
|
if (width > MAX_GRID_SIZE)
|
|
return NULL;
|
|
height = grid->height;
|
|
for (i = 0; i < width; i++) {
|
|
if (i == column) {
|
|
//insert new column
|
|
for (j = 0; j < grid->height; j++) {
|
|
LerpDrawVert( &grid->verts[j * grid->width + i-1], &grid->verts[j * grid->width + i], &ctrl[j][i] );
|
|
if (j == row)
|
|
VectorCopy(point, ctrl[j][i].xyz);
|
|
}
|
|
errorTable[0][i] = loderror;
|
|
continue;
|
|
}
|
|
errorTable[0][i] = grid->widthLodError[oldwidth];
|
|
for (j = 0; j < grid->height; j++) {
|
|
ctrl[j][i] = grid->verts[j * grid->width + oldwidth];
|
|
}
|
|
oldwidth++;
|
|
}
|
|
for (j = 0; j < grid->height; j++) {
|
|
errorTable[1][j] = grid->heightLodError[j];
|
|
}
|
|
// put all the aproximating points on the curve
|
|
//PutPointsOnCurve( ctrl, width, height );
|
|
|
|
// calculate indexes
|
|
numIndexes = MakeMeshIndexes(width, height, ctrl, indexes);
|
|
|
|
// calculate normals
|
|
MakeMeshNormals( width, height, ctrl );
|
|
|
|
VectorCopy(grid->lodOrigin, lodOrigin);
|
|
lodRadius = grid->lodRadius;
|
|
// free the old grid
|
|
R_FreeSurfaceGridMesh(grid);
|
|
// create a new grid
|
|
grid = R_CreateSurfaceGridMesh(width, height, ctrl, errorTable, numIndexes, indexes);
|
|
grid->lodRadius = lodRadius;
|
|
VectorCopy(lodOrigin, grid->lodOrigin);
|
|
return grid;
|
|
}
|
|
|
|
/*
|
|
===============
|
|
R_GridInsertRow
|
|
===============
|
|
*/
|
|
srfBspSurface_t *R_GridInsertRow( srfBspSurface_t *grid, int row, int column, vec3_t point, float loderror ) {
|
|
int i, j;
|
|
int width, height, oldheight;
|
|
srfVert_t ctrl[MAX_GRID_SIZE][MAX_GRID_SIZE];
|
|
float errorTable[2][MAX_GRID_SIZE];
|
|
float lodRadius;
|
|
vec3_t lodOrigin;
|
|
int numIndexes;
|
|
static glIndex_t indexes[(MAX_GRID_SIZE-1)*(MAX_GRID_SIZE-1)*2*3];
|
|
|
|
oldheight = 0;
|
|
width = grid->width;
|
|
height = grid->height + 1;
|
|
if (height > MAX_GRID_SIZE)
|
|
return NULL;
|
|
for (i = 0; i < height; i++) {
|
|
if (i == row) {
|
|
//insert new row
|
|
for (j = 0; j < grid->width; j++) {
|
|
LerpDrawVert( &grid->verts[(i-1) * grid->width + j], &grid->verts[i * grid->width + j], &ctrl[i][j] );
|
|
if (j == column)
|
|
VectorCopy(point, ctrl[i][j].xyz);
|
|
}
|
|
errorTable[1][i] = loderror;
|
|
continue;
|
|
}
|
|
errorTable[1][i] = grid->heightLodError[oldheight];
|
|
for (j = 0; j < grid->width; j++) {
|
|
ctrl[i][j] = grid->verts[oldheight * grid->width + j];
|
|
}
|
|
oldheight++;
|
|
}
|
|
for (j = 0; j < grid->width; j++) {
|
|
errorTable[0][j] = grid->widthLodError[j];
|
|
}
|
|
// put all the aproximating points on the curve
|
|
//PutPointsOnCurve( ctrl, width, height );
|
|
|
|
// calculate indexes
|
|
numIndexes = MakeMeshIndexes(width, height, ctrl, indexes);
|
|
|
|
// calculate normals
|
|
MakeMeshNormals( width, height, ctrl );
|
|
|
|
VectorCopy(grid->lodOrigin, lodOrigin);
|
|
lodRadius = grid->lodRadius;
|
|
// free the old grid
|
|
R_FreeSurfaceGridMesh(grid);
|
|
// create a new grid
|
|
grid = R_CreateSurfaceGridMesh(width, height, ctrl, errorTable, numIndexes, indexes);
|
|
grid->lodRadius = lodRadius;
|
|
VectorCopy(lodOrigin, grid->lodOrigin);
|
|
return grid;
|
|
}
|