server_common/recastnavigation_v1.6.0
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Layer progress: Fixed reg building with multiple areas. Added contour generation.

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This commit is contained in:
Mikko Mononen 2011-03-06 08:26:55 +00:00
parent a1babd6803
commit 6cb0413cc7
9 changed files with 741 additions and 115 deletions
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3
DebugUtils/Include/RecastDebugDraw.h
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@ -34,6 +34,9 @@ void duDebugDrawLeanHeightfieldSolid(duDebugDraw* dd, const struct rcLeanHeightf
void duDebugDrawHeightfieldLayers(duDebugDraw* dd, const struct rcHeightfieldLayerSet& lset);
void duDebugDrawHeightfieldLayersRegions(duDebugDraw* dd, const struct rcHeightfieldLayerSet& lset);
void duDebugDrawLayerContours(duDebugDraw* dd, const struct rcLayerContourSet& lcset);
void duDebugDrawRegionConnections(struct duDebugDraw* dd, const struct rcContourSet& cset, const float alpha = 1.0f);
void duDebugDrawRawContours(struct duDebugDraw* dd, const struct rcContourSet& cset, const float alpha = 1.0f);
void duDebugDrawContours(struct duDebugDraw* dd, const struct rcContourSet& cset, const float alpha = 1.0f);

216
DebugUtils/Source/RecastDebugDraw.cpp
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@ -323,17 +323,61 @@ void duDebugDrawLeanHeightfieldSolid(duDebugDraw* dd, const rcLeanHeightfield& l
dd->end();
}
static void drawLayerPortals(duDebugDraw* dd, const rcHeightfieldLayer* layer, const unsigned int color)
{
const float cs = layer->cs;
const float ch = layer->ch;
const float h = (layer->ymax-layer->ymin+1)*ch;
unsigned int pcol = duLerpCol(color,duRGBA(255,255,255,255),64);
dd->begin(DU_DRAW_LINES, 2.0f);
for (int j = 0; j < layer->nportals; ++j)
{
const rcHeightfieldLayerPortal* portal = &layer->portals[j];
if (portal->dir == 0 || portal->dir == 2)
{
const int xx = portal->dir == 0 ? (int)portal->pos : (int)portal->pos+1;
const float fx = layer->bmin[0] + xx*cs;
const float fya = layer->bmin[1] + (layer->ymin)*ch;
const float fyb = layer->bmin[1] + (layer->ymin)*ch;
const float fza = layer->bmin[2] + portal->smin*cs;
const float fzb = layer->bmin[2] + portal->smax*cs;
dd->vertex(fx, fya+h, fza, pcol);
dd->vertex(fx, fyb+h, fzb, pcol);
dd->vertex(fx, fya, fza, pcol);
dd->vertex(fx, fya+h, fza, pcol);
dd->vertex(fx, fyb, fzb, pcol);
dd->vertex(fx, fyb+h, fzb, pcol);
}
else if (portal->dir == 3 || portal->dir == 1)
{
const int yy = portal->dir == 3 ? (int)portal->pos : (int)portal->pos+1;
const float fxa = layer->bmin[0] + portal->smin*cs;
const float fxb = layer->bmin[0] + portal->smax*cs;
const float fya = layer->bmin[1] + (layer->ymin)*ch;
const float fyb = layer->bmin[1] + (layer->ymin)*ch;
const float fz = layer->bmin[2] + yy*cs;
dd->vertex(fxa, fya+h, fz, pcol);
dd->vertex(fxb, fyb+h, fz, pcol);
dd->vertex(fxa, fya, fz, pcol);
dd->vertex(fxa, fya+h, fz, pcol);
dd->vertex(fxb, fyb, fz, pcol);
dd->vertex(fxb, fyb+h, fz, pcol);
}
}
dd->end();
}
void duDebugDrawHeightfieldLayers(duDebugDraw* dd, const struct rcHeightfieldLayerSet& lset)
{
if (!dd) return;
const float cs = lset.cs;
const float ch = lset.ch;
for (int i = 0; i < lset.nlayers; ++i)
{
const rcHeightfieldLayer* layer = &lset.layers[i];
const float cs = layer->cs;
const float ch = layer->ch;
const int w = layer->width;
const int h = layer->height;
@ -341,10 +385,10 @@ void duDebugDrawHeightfieldLayers(duDebugDraw* dd, const struct rcHeightfieldLay
// Layer bounds
float bmin[3], bmax[3];
rcVcopy(bmin, lset.bmin);
rcVcopy(bmax, lset.bmax);
bmin[1] = lset.bmin[1] + (layer->ymin-1)*ch;
bmax[1] = lset.bmin[1] + (layer->ymax+1)*ch;
rcVcopy(bmin, layer->bmin);
rcVcopy(bmax, layer->bmax);
bmin[1] = layer->bmin[1] + (layer->ymin-1)*ch;
bmax[1] = layer->bmin[1] + (layer->ymax+1)*ch;
duDebugDrawBoxWire(dd, bmin[0],bmin[1],bmin[2], bmax[0],bmax[1],bmax[2], duTransCol(color,128), 2.0f);
// Layer height
@ -366,9 +410,9 @@ void duDebugDrawHeightfieldLayers(duDebugDraw* dd, const struct rcHeightfieldLay
else
col = duLerpCol(color, duIntToCol(area, 255), 32);
const float fx = lset.bmin[0] + x*cs;
const float fy = lset.bmin[1] + (h+1)*ch;
const float fz = lset.bmin[2] + y*cs;
const float fx = layer->bmin[0] + x*cs;
const float fy = layer->bmin[1] + (h+1)*ch;
const float fz = layer->bmin[2] + y*cs;
dd->vertex(fx, fy, fz, col);
dd->vertex(fx, fy, fz+cs, col);
@ -379,39 +423,7 @@ void duDebugDrawHeightfieldLayers(duDebugDraw* dd, const struct rcHeightfieldLay
dd->end();
// Portals
unsigned int pcol = duLerpCol(color,duRGBA(255,255,255,255),128);
dd->begin(DU_DRAW_LINES, 2.0f);
for (int j = 0; j < layer->nportals; ++j)
{
const rcHeightfieldLayerPortal* portal = &layer->portals[j];
if (portal->dir == 0 || portal->dir == 2)
{
const int ha = (int)layer->heights[portal->pos + portal->smin*w];
const int hb = (int)layer->heights[portal->pos + (portal->smax-1)*w];
const int xx = (portal->dir == 0) ? portal->pos : portal->pos+1;
const float fx = lset.bmin[0] + xx*cs;
const float fya = lset.bmin[1] + (ha+4)*ch;
const float fyb = lset.bmin[1] + (hb+4)*ch;
const float fza = lset.bmin[2] + portal->smin*cs;
const float fzb = lset.bmin[2] + portal->smax*cs;
dd->vertex(fx, fya, fza, pcol);
dd->vertex(fx, fyb, fzb, pcol);
}
else if (portal->dir == 3 || portal->dir == 1)
{
const int ha = (int)layer->heights[portal->smin + portal->pos*w];
const int hb = (int)layer->heights[(portal->smax-1) + portal->pos*w];
const int yy = (portal->dir == 3) ? portal->pos : portal->pos+1;
const float fxa = lset.bmin[0] + portal->smin*cs;
const float fxb = lset.bmin[0] + portal->smax*cs;
const float fya = lset.bmin[1] + (ha+3)*ch;
const float fyb = lset.bmin[1] + (hb+3)*ch;
const float fz = lset.bmin[2] + yy*cs;
dd->vertex(fxa, fya, fz, pcol);
dd->vertex(fxb, fyb, fz, pcol);
}
}
dd->end();
drawLayerPortals(dd, layer, color);
}
}
@ -420,13 +432,12 @@ void duDebugDrawHeightfieldLayersRegions(duDebugDraw* dd, const struct rcHeightf
{
if (!dd) return;
const float cs = lset.cs;
const float ch = lset.ch;
for (int i = 0; i < lset.nlayers; ++i)
{
const rcHeightfieldLayer* layer = &lset.layers[i];
const float cs = layer->cs;
const float ch = layer->ch;
const int w = layer->width;
const int h = layer->height;
@ -434,10 +445,10 @@ void duDebugDrawHeightfieldLayersRegions(duDebugDraw* dd, const struct rcHeightf
// Layer bounds
float bmin[3], bmax[3];
rcVcopy(bmin, lset.bmin);
rcVcopy(bmax, lset.bmax);
bmin[1] = lset.bmin[1] + (layer->ymin-1)*ch;
bmax[1] = lset.bmin[1] + (layer->ymax+1)*ch;
rcVcopy(bmin, layer->bmin);
rcVcopy(bmax, layer->bmax);
bmin[1] = layer->bmin[1] + (layer->ymin-1)*ch;
bmax[1] = layer->bmin[1] + (layer->ymax+1)*ch;
duDebugDrawBoxWire(dd, bmin[0],bmin[1],bmin[2], bmax[0],bmax[1],bmax[2], duTransCol(color,128), 2.0f);
// Layer height
@ -453,9 +464,9 @@ void duDebugDrawHeightfieldLayersRegions(duDebugDraw* dd, const struct rcHeightf
unsigned int col = duLerpCol(color, duIntToCol(area, 255), 128);
const float fx = lset.bmin[0] + x*cs;
const float fy = lset.bmin[1] + (h+1)*ch;
const float fz = lset.bmin[2] + y*cs;
const float fx = layer->bmin[0] + x*cs;
const float fy = layer->bmin[1] + (h+1)*ch;
const float fz = layer->bmin[2] + y*cs;
dd->vertex(fx, fy, fz, col);
dd->vertex(fx, fy, fz+cs, col);
@ -464,45 +475,74 @@ void duDebugDrawHeightfieldLayersRegions(duDebugDraw* dd, const struct rcHeightf
}
}
dd->end();
/* // Portals
unsigned int pcol = duLerpCol(color,duRGBA(255,255,255,255),128);
dd->begin(DU_DRAW_LINES, 2.0f);
for (int j = 0; j < layer->nportals; ++j)
{
const rcHeightfieldLayerPortal* portal = &layer->portals[j];
if (portal->dir == 0 || portal->dir == 2)
{
const int ha = (int)layer->heights[portal->pos + portal->smin*w];
const int hb = (int)layer->heights[portal->pos + (portal->smax-1)*w];
const int xx = (portal->dir == 0) ? portal->pos : portal->pos+1;
const float fx = lset.bmin[0] + xx*cs;
const float fya = lset.bmin[1] + (ha+4)*ch;
const float fyb = lset.bmin[1] + (hb+4)*ch;
const float fza = lset.bmin[2] + portal->smin*cs;
const float fzb = lset.bmin[2] + portal->smax*cs;
dd->vertex(fx, fya, fza, pcol);
dd->vertex(fx, fyb, fzb, pcol);
}
else if (portal->dir == 3 || portal->dir == 1)
{
const int ha = (int)layer->heights[portal->smin + portal->pos*w];
const int hb = (int)layer->heights[(portal->smax-1) + portal->pos*w];
const int yy = (portal->dir == 3) ? portal->pos : portal->pos+1;
const float fxa = lset.bmin[0] + portal->smin*cs;
const float fxb = lset.bmin[0] + portal->smax*cs;
const float fya = lset.bmin[1] + (ha+3)*ch;
const float fyb = lset.bmin[1] + (hb+3)*ch;
const float fz = lset.bmin[2] + yy*cs;
dd->vertex(fxa, fya, fz, pcol);
dd->vertex(fxb, fyb, fz, pcol);
}
}
dd->end();*/
// Portals
drawLayerPortals(dd, layer, color);
}
}
void duDebugDrawLayerContours(duDebugDraw* dd, const struct rcLayerContourSet& lcset)
{
if (!dd) return;
const float* orig = lcset.bmin;
const float cs = lcset.cs;
const float ch = lcset.ch;
const unsigned char a = 255;// (unsigned char)(alpha*255.0f);
dd->begin(DU_DRAW_LINES, 2.0f);
for (int i = 0; i < lcset.nconts; ++i)
{
const rcLayerContour& c = lcset.conts[i];
unsigned int color = 0;
for (int j = 0; j < c.nverts; ++j)
{
const int k = (j+1) % c.nverts;
const unsigned char* va = &c.verts[j*4];
const unsigned char* vb = &c.verts[k*4];
const float ax = orig[0] + va[0]*cs;
const float ay = orig[1] + (va[1]+1+(i&1))*ch;
const float az = orig[2] + va[2]*cs;
const float bx = orig[0] + vb[0]*cs;
const float by = orig[1] + (vb[1]+1+(i&1))*ch;
const float bz = orig[2] + vb[2]*cs;
color = duIntToCol(vb[3], a);
dd->vertex(ax,ay,az,color);
dd->vertex(bx,by,bz,duDarkenCol(color));
}
}
dd->end();
dd->begin(DU_DRAW_POINTS, 4.0f);
for (int i = 0; i < lcset.nconts; ++i)
{
const rcLayerContour& c = lcset.conts[i];
unsigned int color = 0;
for (int j = 0; j < c.nverts; ++j)
{
const int k = (j+1) % c.nverts;
const unsigned char* va = &c.verts[j*4];
const unsigned char* vb = &c.verts[k*4];
color = duDarkenCol(duIntToCol(va[3], a));
if (va[3] != vb[3])
color = duRGBA(255,255,255,a);
float fx = orig[0] + va[0]*cs;
float fy = orig[1] + (va[1]+1+(i&1))*ch;
float fz = orig[2] + va[2]*cs;
dd->vertex(fx,fy,fz, color);
}
}
dd->end();
}
static void getContourCenter(const rcContour* cont, const float* orig, float cs, float ch, float* center)
{
center[0] = 0;

38
Recast/Include/Recast.h
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@ -224,15 +224,19 @@ struct rcLeanHeightfield
struct rcHeightfieldLayerPortal
{
unsigned short pos; // Position of the portal.
unsigned short smin, smax; // Span min/max of the portal.
unsigned char pos; // Position of the portal.
unsigned char dir; // Direction of the portal (same as used by rcGetCon()).
unsigned char smin, smax; // Span min/max of the portal.
unsigned short hmin, hmax; // Span min/max of the portal.
};
struct rcHeightfieldLayer
{
float bmin[3], bmax[3]; // Bounding box of the heightfield.
float cs, ch; // Cell size and height.
int width, height; // Width and height of the layer.
int nportals; // Number of portals.
unsigned char regCount;
unsigned short ymin, ymax; // Height min/max range.
unsigned short* heights; // Heighfield.
unsigned char* areas; // Area types.
@ -244,8 +248,6 @@ struct rcHeightfieldLayerSet
{
rcHeightfieldLayer* layers; // Pointer to layers.
int nlayers; // Number of layers.
float bmin[3], bmax[3]; // Bounding box of the heightfield.
float cs, ch; // Cell size and height.
};
rcHeightfieldLayerSet* rcAllocHeightfieldLayerSet();
@ -751,6 +753,34 @@ bool rcBuildHeightfieldLayers(rcContext* ctx, rcCompactHeightfield& chf,
bool rcBuildLayerRegions(rcContext* ctx, rcHeightfieldLayer& layer, const int walkableClimb);
struct rcLayerContour
{
int nverts;
unsigned char* verts;
unsigned char reg, area;
};
struct rcLayerContourSet
{
float bmin[3], bmax[3]; // Bounding box of the heightfield.
float cs, ch; // Cell size and height.
int nconts;
rcLayerContour* conts;
};
rcLayerContourSet* rcAllocLayerContourSet();
void rcFreeLayerContourSet(rcLayerContourSet* lset);
// TODO: move this somewhere else, once the layer meshing is done.
bool rcBuildLayerContours(rcContext* ctx,
rcHeightfieldLayer& layer,
const int walkableClimb, const float maxError,
rcLayerContourSet& lcset);
// Builds simplified contours from the regions outlines.
// Params:
// chf - (in) compact heightfield which has regions set.

22
Recast/Source/Recast.cpp
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@ -112,6 +112,28 @@ void rcFreeHeightfieldLayerSet(rcHeightfieldLayerSet* lset)
rcFree(lset);
}
rcLayerContourSet* rcAllocLayerContourSet()
{
rcLayerContourSet* cset = (rcLayerContourSet*)rcAlloc(sizeof(rcLayerContourSet), RC_ALLOC_PERM);
memset(cset, 0, sizeof(rcLayerContourSet));
return cset;
}
void rcFreeLayerContourSet(rcLayerContourSet* cset)
{
if (!cset) return;
for (int i = 0; i < cset->nconts; ++i)
{
rcFree(cset->conts[i].verts);
// rcFree(cset->conts[i].rverts);
}
rcFree(cset->conts);
rcFree(cset);
}
rcContourSet* rcAllocContourSet()
{
rcContourSet* cset = (rcContourSet*)rcAlloc(sizeof(rcContourSet), RC_ALLOC_PERM);

2
Recast/Source/RecastContour.cpp
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@ -340,7 +340,7 @@ static void simplifyContour(rcIntArray& points, rcIntArray& simplified,
endi = ai;
}
// Tessellate only outer edges oredges between areas.
// Tessellate only outer edges or edges between areas.
if ((points[ci*4+3] & RC_CONTOUR_REG_MASK) == 0 ||
(points[ci*4+3] & RC_AREA_BORDER))
{

526
Recast/Source/RecastLayers.cpp
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@ -476,15 +476,16 @@ bool rcBuildHeightfieldLayers(rcContext* ctx, rcCompactHeightfield& chf,
const int lw = w - borderSize*2;
const int lh = h - borderSize*2;
// Build contracted bbox for layers.
float bmin[3], bmax[3];
rcVcopy(bmin, chf.bmin);
rcVcopy(bmax, chf.bmax);
bmin[0] += borderSize*chf.cs;
bmin[2] += borderSize*chf.cs;
bmax[0] -= borderSize*chf.cs;
bmax[2] -= borderSize*chf.cs;
lset.nlayers = (int)layerId;
rcVcopy(lset.bmin, chf.bmin);
rcVcopy(lset.bmax, chf.bmax);
lset.bmin[0] += borderSize*chf.cs;
lset.bmin[2] += borderSize*chf.cs;
lset.bmax[0] -= borderSize*chf.cs;
lset.bmax[2] -= borderSize*chf.cs;
lset.cs = chf.cs;
lset.ch = chf.ch;
lset.layers = (rcHeightfieldLayer*)rcAlloc(sizeof(rcHeightfieldLayer)*lset.nlayers, RC_ALLOC_PERM);
if (!lset.layers)
@ -512,6 +513,11 @@ bool rcBuildHeightfieldLayers(rcContext* ctx, rcCompactHeightfield& chf,
layer->width = lw;
layer->height = lh;
layer->cs = chf.cs;
layer->ch = chf.ch;
// TODO: Should this be local bbox instead?
rcVcopy(layer->bmin, bmin);
rcVcopy(layer->bmax, bmax);
layer->heights = (unsigned short*)rcAlloc(sizeof(unsigned short)*lw*lh, RC_ALLOC_PERM);
if (!layer->heights)
@ -622,15 +628,15 @@ bool rcBuildHeightfieldLayers(rcContext* ctx, rcCompactHeightfield& chf,
if (start[j] != -1)
{
// Add portal.
rcHeightfieldLayerPortal* portal = allocPortal(&layer->portals,layer->nportals,cportals);
rcHeightfieldLayerPortal* portal = allocPortal(&layer->portals, layer->nportals, cportals);
if (!portal)
{
ctx->log(RC_LOG_ERROR, "rcBuildHeightfieldLayers: Out of memory 'portals' (%d).", cportals);
return false;
}
portal->pos = (unsigned short)y;
portal->smin = (unsigned short)start[j];
portal->smax = (unsigned short)x;
portal->pos = (unsigned char)y/*+off[j]*/;
portal->smin = (unsigned char)start[j];
portal->smax = (unsigned char)x;
portal->dir = dir[j];
start[j] = -1;
@ -669,9 +675,9 @@ bool rcBuildHeightfieldLayers(rcContext* ctx, rcCompactHeightfield& chf,
ctx->log(RC_LOG_ERROR, "rcBuildHeightfieldLayers: Out of memory 'portals' (%d).", cportals);
return false;
}
portal->pos = (unsigned short)x;
portal->smin = (unsigned short)start[j];
portal->smax = (unsigned short)y;
portal->pos = (unsigned char)x/*+off[j]*/;
portal->smin = (unsigned char)start[j];
portal->smax = (unsigned char)y;
portal->dir = dir[j];
start[j] = -1;
@ -690,7 +696,7 @@ bool rcBuildHeightfieldLayers(rcContext* ctx, rcCompactHeightfield& chf,
inline bool isConnected(rcHeightfieldLayer& layer, const int ia, const int ib, const int walkableClimb)
{
if (layer.areas[ib] == RC_NULL_AREA) return false;
if (layer.areas[ia] != layer.areas[ib]) return false;
if (rcAbs((int)layer.heights[ia] - (int)layer.heights[ib]) > walkableClimb) return false;
return true;
}
@ -927,6 +933,8 @@ bool rcBuildLayerRegions(rcContext* ctx, rcHeightfieldLayer& layer, const int wa
for (int i = 0; i < nregs; ++i)
regs[i].regId = remap[regs[i].regId];
layer.regCount = regId;
for (int i = 0; i < w*h; ++i)
{
if (layer.regs[i] != 0xff)
@ -935,3 +943,489 @@ bool rcBuildLayerRegions(rcContext* ctx, rcHeightfieldLayer& layer, const int wa
return true;
}
static bool allocVert(rcLayerContour& cont, int& cverts)
{
if (cont.nverts+1 > cverts)
{
cverts = !cverts ? 16 : cverts*2;
unsigned char* nv = (unsigned char*)rcAlloc(cverts*4, RC_ALLOC_TEMP);
if (!nv) return false;
if (cont.nverts)
memcpy(nv, cont.verts, cont.nverts*4);
rcFree(cont.verts);
cont.verts = nv;
}
return true;
}
static bool addVertex(rcLayerContour& cont, int x, int y, int z, int r, int& cverts)
{
// Try to merge with existing segments.
if (cont.nverts > 1)
{
unsigned char* pa = &cont.verts[(cont.nverts-2)*4];
unsigned char* pb = &cont.verts[(cont.nverts-1)*4];
if ((int)pb[3] == r)
{
if (pa[0] == pb[0] && (int)pb[0] == x)
{
// The verts are aligned aling x-axis, update z.
pb[1] = (unsigned char)y;
pb[2] = (unsigned char)z;
pb[3] = (unsigned char)r;
return true;
}
else if (pa[2] == pb[2] && (int)pb[2] == z)
{
// The verts are aligned aling z-axis, update x.
pb[0] = (unsigned char)x;
pb[1] = (unsigned char)y;
pb[3] = (unsigned char)r;
return true;
}
}
}
// Add new point.
if (!allocVert(cont, cverts))
return false;
unsigned char* v = &cont.verts[cont.nverts*4];
v[0] = (unsigned char)x;
v[1] = (unsigned char)y;
v[2] = (unsigned char)z;
v[3] = (unsigned char)r;
cont.nverts++;
return true;
}
static unsigned char getNeighbourReg(rcHeightfieldLayer& layer,
const unsigned char* cons,
const int ax, const int ay, const int dir,
const int walkableClimb)
{
const int ia = ax+ay*layer.width;
const int bx = ax + rcGetDirOffsetX(dir);
const int by = ay + rcGetDirOffsetY(dir);
if (bx < 0 || by < 0 || bx >= layer.width || by >= layer.height)
{
if (cons[ia] & (1<<dir))
return 0xfe - dir;
return 0xff;
}
const int ib = bx+by*layer.width;
if (rcAbs((int)layer.heights[ia] - (int)layer.heights[ib]) > walkableClimb)
{
if (cons[ia] & (1<<dir))
return 0xfe - dir;
return 0xff;
}
return layer.regs[ib];
}
static int getCornerHeight(rcHeightfieldLayer& layer,
const int x, const int y, const int dir,
const int walkableClimb)
{
return layer.heights[x+y*layer.width];
}
static bool walkContour(int x, int y, rcHeightfieldLayer& layer,
const unsigned char* cons,
const int walkableClimb, rcLayerContour& cont)
{
const int w = layer.width;
const int h = layer.height;
int cverts = cont.nverts;
int startX = x;
int startY = y;
int startDir = -1;
for (int i = 0; i < 4; ++i)
{
const int dir = (i+3)&3;
unsigned char rn = getNeighbourReg(layer, cons, x, y, dir, walkableClimb);
if (rn != layer.regs[x+y*w])
{
startDir = dir;
break;
}
}
if (startDir == -1)
return true;
int dir = startDir;
const int maxIter = w*h;
int iter = 0;
while (iter < maxIter)
{
unsigned char rn = getNeighbourReg(layer, cons, x, y, dir, walkableClimb);
int nx = x;
int ny = y;
int ndir = dir;
if (rn != layer.regs[x+y*w])
{
// Solid edge.
int px = x;
int py = getCornerHeight(layer, x, y, dir, walkableClimb);
int pz = y;
switch(dir)
{
case 0: pz++; break;
case 1: px++; pz++; break;
case 2: px++; break;
}
// Try to merge with previous vertex.
if (!addVertex(cont,px,py,pz,rn,cverts))
return false;
ndir = (dir+1) & 0x3; // Rotate CW
}
else
{
// Move to next.
nx = x + rcGetDirOffsetX(dir);
ny = y + rcGetDirOffsetY(dir);
ndir = (dir+3) & 0x3; // Rotate CCW
}
if (iter > 0 && x == startX && y == startY && dir == startDir)
break;
x = nx;
y = ny;
dir = ndir;
iter++;
}
// Remove last vertex if it is duplicate of the first one.
unsigned char* pa = &cont.verts[(cont.nverts-1)*4];
unsigned char* pb = &cont.verts[0];
if (pa[0] == pb[0] && pa[2] == pb[2])
cont.nverts--;
return true;
}
static float distancePtSeg(const int x, const int z,
const int px, const int pz,
const int qx, const int qz)
{
/* float pqx = (float)(qx - px);
float pqy = (float)(qy - py);
float pqz = (float)(qz - pz);
float dx = (float)(x - px);
float dy = (float)(y - py);
float dz = (float)(z - pz);
float d = pqx*pqx + pqy*pqy + pqz*pqz;
float t = pqx*dx + pqy*dy + pqz*dz;
if (d > 0)
t /= d;
if (t < 0)
t = 0;
else if (t > 1)
t = 1;
dx = px + t*pqx - x;
dy = py + t*pqy - y;
dz = pz + t*pqz - z;
return dx*dx + dy*dy + dz*dz;*/
float pqx = (float)(qx - px);
float pqz = (float)(qz - pz);
float dx = (float)(x - px);
float dz = (float)(z - pz);
float d = pqx*pqx + pqz*pqz;
float t = pqx*dx + pqz*dz;
if (d > 0)
t /= d;
if (t < 0)
t = 0;
else if (t > 1)
t = 1;
dx = px + t*pqx - x;
dz = pz + t*pqz - z;
return dx*dx + dz*dz;
}
static bool simplifyContour(rcLayerContour& cont, const float maxError)
{
int* poly = (int*)rcAlloc(sizeof(int)*cont.nverts, RC_ALLOC_TEMP);
if (!poly)
return false;
int npoly = 0;
for (int i = 0; i < cont.nverts; ++i)
{
int j = (i+1) % cont.nverts;
// Check for start of a wall segment.
unsigned char ra = cont.verts[j*4+3];
unsigned char rb = cont.verts[i*4+3];
if (ra != rb)
poly[npoly++] = i;
}
if (npoly < 2)
{
// If there is no transitions at all,
// create some initial points for the simplification process.
// Find lower-left and upper-right vertices of the contour.
int llx = cont.verts[0];
int llz = cont.verts[2];
int lli = 0;
int urx = cont.verts[0];
int urz = cont.verts[2];
int uri = 0;
for (int i = 1; i < cont.nverts; ++i)
{
int x = cont.verts[i*4+0];
int z = cont.verts[i*4+2];
if (x < llx || (x == llx && z < llz))
{
llx = x;
llz = z;
lli = i;
}
if (x > urx || (x == urx && z > urz))
{
urx = x;
urz = z;
uri = i;
}
}
npoly = 0;
poly[npoly++] = lli;
poly[npoly++] = uri;
}
// Add points until all raw points are within
// error tolerance to the simplified shape.
for (int i = 0; i < npoly; )
{
int ii = (i+1) % npoly;
const int ai = poly[i];
const int ax = cont.verts[ai*4+0];
const int az = cont.verts[ai*4+2];
const int bi = poly[ii];
const int bx = cont.verts[bi*4+0];
const int bz = cont.verts[bi*4+2];
// Find maximum deviation from the segment.
float maxd = 0;
int maxi = -1;
int ci, cinc, endi;
// Traverse the segment in lexilogical order so that the
// max deviation is calculated similarly when traversing
// opposite segments.
if (bx > ax || (bx == ax && bz > az))
{
cinc = 1;
ci = (ai+cinc) % cont.nverts;
endi = bi;
}
else
{
cinc = cont.nverts-1;
ci = (bi+cinc) % cont.nverts;
endi = ai;
}
// Tessellate only outer edges or edges between areas.
while (ci != endi)
{
float d = distancePtSeg(cont.verts[ci*4+0], cont.verts[ci*4+2], ax, az, bx, bz);
if (d > maxd)
{
maxd = d;
maxi = ci;
}
ci = (ci+cinc) % cont.nverts;
}
// If the max deviation is larger than accepted error,
// add new point, else continue to next segment.
if (maxi != -1 && maxd > (maxError*maxError))
{
npoly++;
for (int j = npoly-1; j > i; --j)
poly[j] = poly[j-1];
poly[i+1] = maxi;
}
else
{
++i;
}
}
// Remap vertices
int start = 0;
for (int i = 1; i < npoly; ++i)
if (poly[i] < poly[start])
start = i;
cont.nverts = 0;
for (int i = 0; i < npoly; ++i)
{
const int j = (start+i) % npoly;
unsigned char* src = &cont.verts[poly[j]*4];
unsigned char* dst = &cont.verts[cont.nverts*4];
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
cont.nverts++;
}
rcFree(poly);
return true;
}
// TODO: move this somewhere else, once the layer meshing is done.
bool rcBuildLayerContours(rcContext* ctx,
rcHeightfieldLayer& layer,
const int walkableClimb, const float maxError,
rcLayerContourSet& lcset)
{
rcAssert(ctx);
const int w = layer.width;
const int h = layer.height;
rcAssert(lcset.conts == 0);
rcVcopy(lcset.bmin, layer.bmin);
rcVcopy(lcset.bmax, layer.bmax);
lcset.cs = layer.cs;
lcset.ch = layer.ch;
lcset.nconts = layer.regCount;
lcset.conts = (rcLayerContour*)rcAlloc(sizeof(rcLayerContour)*lcset.nconts, RC_ALLOC_TEMP);
if (!lcset.conts)
{
ctx->log(RC_LOG_ERROR, "rcBuildLayerContours: Out of memory 'conts' (%d).", lcset.nconts);
return false;
}
memset(lcset.conts, 0, sizeof(rcLayerContour)*lcset.nconts);
rcScopedDelete<unsigned char> cons = (unsigned char*)rcAlloc(sizeof(unsigned char)*w*h, RC_ALLOC_TEMP);
if (!cons)
{
ctx->log(RC_LOG_ERROR, "rcBuildLayerContours: Out of memory 'cons' (%d).", w*h);
return false;
}
memset(cons,0,sizeof(unsigned char)*w*h);
/* if (portal->dir == 0 || portal->dir == 2)
{
const int xx = portal->dir == 0 ? (int)portal->pos : (int)portal->pos+1;
const float fx = layer->bmin[0] + xx*cs;
const float fya = layer->bmin[1] + (layer->ymin)*ch;
const float fyb = layer->bmin[1] + (layer->ymin)*ch;
const float fza = layer->bmin[2] + portal->smin*cs;
const float fzb = layer->bmin[2] + portal->smax*cs;
dd->vertex(fx, fya+h, fza, pcol);
dd->vertex(fx, fyb+h, fzb, pcol);
}
else if (portal->dir == 3 || portal->dir == 1)
{
const int yy = portal->dir == 3 ? (int)portal->pos : (int)portal->pos+1;
const float fxa = layer->bmin[0] + portal->smin*cs;
const float fxb = layer->bmin[0] + portal->smax*cs;
const float fya = layer->bmin[1] + (layer->ymin)*ch;
const float fyb = layer->bmin[1] + (layer->ymin)*ch;
const float fz = layer->bmin[2] + yy*cs;
dd->vertex(fxa, fya+h, fz, pcol);
dd->vertex(fxb, fyb+h, fz, pcol);
}*/
// Paint portals
for (int i = 0; i < layer.nportals; ++i)
{
const rcHeightfieldLayerPortal* portal = &layer.portals[i];
if (portal->dir == 0 || portal->dir == 2)
{
const unsigned char mask = (const unsigned char)(1 << portal->dir);
for (int j = (int)portal->smin; j < (int)portal->smax; ++j)
cons[(int)portal->pos + j*w] |= mask;
}
else
{
const unsigned char mask = (const unsigned char)(1 << portal->dir);
for (int j = (int)portal->smin; j < (int)portal->smax; ++j)
cons[j + (int)portal->pos*w] |= mask;
}
}
/* printf("cons:\n");
for (int y = 0; y < h; ++y)
{
for (int x = 0; x < w; ++x)
{
unsigned char c = cons[x+y*w];
if (c == 0)
printf(".");
else
printf("%x",c);
}
printf("\n");
}*/
// Find contours.
for (int y = 0; y < h; ++y)
{
for (int x = 0; x < w; ++x)
{
const int idx = x+y*w;
const unsigned char ri = layer.regs[idx];
if (ri == 0xff)
continue;
rcLayerContour& cont = lcset.conts[ri];
if (cont.nverts > 0)
continue;
cont.reg = ri;
cont.area = layer.areas[idx];
if (!walkContour(x, y, layer, cons, walkableClimb, cont))
{
ctx->log(RC_LOG_ERROR, "rcBuildLayerContours: Failed to walk contour.");
return false;
}
if (!simplifyContour(cont, maxError))
{
ctx->log(RC_LOG_ERROR, "rcBuildLayerContours: Failed to simplify contour.");
return false;
}
}
}
return true;
}

BIN
RecastDemo/Bin/Recast.app/Contents/MacOS/Recast
View File

Binary file not shown.

9
RecastDemo/Include/Sample_TileMesh.h
View File

@ -35,11 +35,15 @@ protected:
unsigned char* m_triareas;
rcHeightfield* m_solid;
rcCompactHeightfield* m_chf;
rcHeightfieldLayerSet* m_lset;
rcContourSet* m_cset;
rcPolyMesh* m_pmesh;
rcPolyMeshDetail* m_dmesh;
rcConfig m_cfg;
static const int MAX_LAYERS = 128;
rcHeightfieldLayerSet* m_lset;
rcLayerContourSet* m_lcsets[MAX_LAYERS];
int m_nlcsets;
enum DrawMode
{
@ -61,7 +65,10 @@ protected:
DRAWMODE_CONTOURS,
DRAWMODE_POLYMESH,
DRAWMODE_POLYMESH_DETAIL,
DRAWMODE_HEIGHFIELD_LAYERS,
DRAWMODE_LAYER_CONTOURS,
MAX_DRAWMODE
};

40
RecastDemo/Source/Sample_TileMesh.cpp
View File

@ -178,10 +178,11 @@ Sample_TileMesh::Sample_TileMesh() :
m_triareas(0),
m_solid(0),
m_chf(0),
m_lset(0),
m_cset(0),
m_pmesh(0),
m_dmesh(0),
m_lset(0),
m_nlcsets(0),
m_drawMode(DRAWMODE_NAVMESH),
m_maxTiles(0),
m_maxPolysPerTile(0),
@ -194,6 +195,8 @@ Sample_TileMesh::Sample_TileMesh() :
resetCommonSettings();
memset(m_tileBmin, 0, sizeof(m_tileBmin));
memset(m_tileBmax, 0, sizeof(m_tileBmax));
memset(m_lcsets, 0, sizeof(m_lcsets));
setTool(new NavMeshTileTool);
}
@ -213,14 +216,21 @@ void Sample_TileMesh::cleanup()
m_solid = 0;
rcFreeCompactHeightfield(m_chf);
m_chf = 0;
rcFreeHeightfieldLayerSet(m_lset);
m_lset = 0;
rcFreeContourSet(m_cset);
m_cset = 0;
rcFreePolyMesh(m_pmesh);
m_pmesh = 0;
rcFreePolyMeshDetail(m_dmesh);
m_dmesh = 0;
rcFreeHeightfieldLayerSet(m_lset);
m_lset = 0;
for (int i = 0; i < MAX_LAYERS; ++i)
{
rcFreeLayerContourSet(m_lcsets[i]);
m_lcsets[i] = 0;
}
m_nlcsets = 0;
}
@ -470,6 +480,7 @@ void Sample_TileMesh::handleDebugMode()
valid[DRAWMODE_POLYMESH] = m_pmesh != 0;
valid[DRAWMODE_POLYMESH_DETAIL] = m_dmesh != 0;
valid[DRAWMODE_HEIGHFIELD_LAYERS] = m_lset != 0;
valid[DRAWMODE_LAYER_CONTOURS] = m_nlcsets != 0;
}
int unavail = 0;
@ -516,8 +527,11 @@ void Sample_TileMesh::handleDebugMode()
m_drawMode = DRAWMODE_POLYMESH;
if (imguiCheck("Poly Mesh Detail", m_drawMode == DRAWMODE_POLYMESH_DETAIL, valid[DRAWMODE_POLYMESH_DETAIL]))
m_drawMode = DRAWMODE_POLYMESH_DETAIL;
if (imguiCheck("Heighfield Layers", m_drawMode == DRAWMODE_HEIGHFIELD_LAYERS, valid[DRAWMODE_HEIGHFIELD_LAYERS]))
m_drawMode = DRAWMODE_HEIGHFIELD_LAYERS;
if (imguiCheck("Layer Contours", m_drawMode == DRAWMODE_LAYER_CONTOURS, valid[DRAWMODE_LAYER_CONTOURS]))
m_drawMode = DRAWMODE_LAYER_CONTOURS;
if (unavail)
{
@ -668,6 +682,14 @@ void Sample_TileMesh::handleRender()
duDebugDrawHeightfieldLayersRegions(&dd, *m_lset);
glDepthMask(GL_TRUE);
}
if (m_nlcsets && m_drawMode == DRAWMODE_LAYER_CONTOURS)
{
glDepthMask(GL_FALSE);
for (int i = 0; i < m_nlcsets; ++i)
duDebugDrawLayerContours(&dd, *m_lcsets[i]);
glDepthMask(GL_TRUE);
}
m_geom->drawConvexVolumes(&dd);
@ -697,8 +719,8 @@ void Sample_TileMesh::handleRenderOverlay(double* proj, double* model, int* view
const rcHeightfieldLayer* layer = &m_lset->layers[i];
unsigned int color = duIntToCol(i+1, 255);
float pos[3];
rcVcopy(pos, m_lset->bmin);
pos[1] = m_lset->bmin[1] + ((layer->ymin+layer->ymax)/2)*m_lset->ch;
rcVcopy(pos, layer->bmin);
pos[1] = layer->bmin[1] + ((layer->ymin+layer->ymax)/2)*layer->ch;
if (gluProject((GLdouble)pos[0], (GLdouble)pos[1], (GLdouble)pos[2], model, proj, view, &x, &y, &z))
{
char text[32];
@ -1114,9 +1136,17 @@ unsigned char* Sample_TileMesh::buildTileMesh(const int tx, const int ty, const
return 0;
}
m_nlcsets = 0;
for (int i = 0; i < m_lset->nlayers; ++i)
{
rcBuildLayerRegions(m_ctx, m_lset->layers[i], m_cfg.walkableClimb);
m_lcsets[m_nlcsets] = rcAllocLayerContourSet();
if (!rcBuildLayerContours(m_ctx, m_lset->layers[i],
m_cfg.walkableClimb, m_cfg.maxSimplificationError,
*m_lcsets[m_nlcsets]))
break;
m_nlcsets++;
}
}