void duAppendCylinder(struct duDebugDraw* dd, float minx, float miny, float minz,
float maxx, float maxy, float maxz, unsigned int col)
{
if (!dd) return;
static const int NUM_SEG = 16;
static float dir[NUM_SEG*2];
static bool init = false;
if (!init)
{
init = true;
for (int i = 0; i < NUM_SEG; ++i)
{
const float a = (float)i/(float)NUM_SEG*DU_PI*2;
dir[i*2] = cosf(a);
dir[i*2+1] = sinf(a);
}
}
unsigned int col2 = duMultCol(col, 160);
const float cx = (maxx + minx)/2;
const float cz = (maxz + minz)/2;
const float rx = (maxx - minx)/2;
const float rz = (maxz - minz)/2;
for (int i = 2; i < NUM_SEG; ++i)
{
const int a = 0, b = i-1, c = i;
dd->vertex(cx+dir[a*2+0]*rx, miny, cz+dir[a*2+1]*rz, col2);
dd->vertex(cx+dir[b*2+0]*rx, miny, cz+dir[b*2+1]*rz, col2);
dd->vertex(cx+dir[c*2+0]*rx, miny, cz+dir[c*2+1]*rz, col2);
}
for (int i = 2; i < NUM_SEG; ++i)
{
const int a = 0, b = i, c = i-1;
dd->vertex(cx+dir[a*2+0]*rx, maxy, cz+dir[a*2+1]*rz, col);
dd->vertex(cx+dir[b*2+0]*rx, maxy, cz+dir[b*2+1]*rz, col);
dd->vertex(cx+dir[c*2+0]*rx, maxy, cz+dir[c*2+1]*rz, col);
}
for (int i = 0, j = NUM_SEG-1; i < NUM_SEG; j = i++)
{
dd->vertex(cx+dir[i*2+0]*rx, miny, cz+dir[i*2+1]*rz, col2);
dd->vertex(cx+dir[j*2+0]*rx, miny, cz+dir[j*2+1]*rz, col2);
dd->vertex(cx+dir[j*2+0]*rx, maxy, cz+dir[j*2+1]*rz, col);
dd->vertex(cx+dir[i*2+0]*rx, miny, cz+dir[i*2+1]*rz, col2);
dd->vertex(cx+dir[j*2+0]*rx, maxy, cz+dir[j*2+1]*rz, col);
dd->vertex(cx+dir[i*2+0]*rx, maxy, cz+dir[i*2+1]*rz, col);
}
}
void duCalcBoxColors(unsigned int* colors, unsigned int colTop, unsigned int colSide)
{
if (!colors) return;
colors[0] = duMultCol(colTop, 250);
colors[1] = duMultCol(colSide, 140);
colors[2] = duMultCol(colSide, 165);
colors[3] = duMultCol(colSide, 217);
colors[4] = duMultCol(colSide, 165);
colors[5] = duMultCol(colSide, 217);
}
void duDebugDrawHeightfieldWalkable(duDebugDraw* dd, const rcHeightfield& hf)
{
if (!dd) return;
const float* orig = hf.bmin;
const float cs = hf.cs;
const float ch = hf.ch;
const int w = hf.width;
const int h = hf.height;
unsigned int fcol[6];
duCalcBoxColors(fcol, duRGBA(255,255,255,255), duRGBA(217,217,217,255));
dd->begin(DU_DRAW_QUADS);
for (int y = 0; y < h; ++y)
{
for (int x = 0; x < w; ++x)
{
float fx = orig[0] + x*cs;
float fz = orig[2] + y*cs;
const rcSpan* s = hf.spans[x + y*w];
while (s)
{
if (s->area == RC_WALKABLE_AREA)
fcol[0] = duRGBA(64,128,160,255);
else if (s->area == RC_NULL_AREA)
fcol[0] = duRGBA(64,64,64,255);
else
fcol[0] = duMultCol(duIntToCol(s->area, 255), 200);
duAppendBox(dd, fx, orig[1]+s->smin*ch, fz, fx+cs, orig[1] + s->smax*ch, fz+cs, fcol);
s = s->next;
}
}
}
dd->end();
}
