void BuildTorusPatch(
TimeValue t, PatchMesh &patch,
float radius1, float radius2, int genUVs, BOOL usePhysUVs)
{
int segs = 8, sides = 4;
int nverts = segs * sides;
int nvecs = segs*sides*8;
int npatches = segs * sides;
patch.setNumVerts(nverts);
patch.setNumTVerts(genUVs ? (segs + 1) * (sides + 1) : 0);
patch.setNumVecs(nvecs);
patch.setNumPatches(npatches);
patch.setNumTVPatches(genUVs ? npatches : 0);
int ix=0, jx=0, kx=sides*segs*4, i, j;
float ang1 = 0.0f, delta1 = TWOPI/float(segs);
float ang2 = 0.0f, delta2 = TWOPI/float(sides);
float circleLenIn = CIRCLE_FACT8*(radius1-radius2);
float circleLenOut = CIRCLE_FACT8*(radius1+radius2);
float circleLenMid = CIRCLE_FACT4*radius2;
float circleLen;
float sinang1, cosang1, sinang2, cosang2, rt, u;
Point3 p, v;
DWORD a, b, c, d;
for (i=0; i<segs; i++) {
sinang1 = (float)sin(ang1);
cosang1 = (float)cos(ang1);
ang2 = 0.0f;
for (j=0; j<sides; j++) {
sinang2 = (float)sin(ang2);
cosang2 = (float)cos(ang2);
rt = radius1+radius2*cosang2;
// Vertex
p.x = rt*cosang1;
p.y = rt*sinang1;
p.z = radius2*sinang2;
patch.setVert(ix, p);
// Tangents
u = (cosang2+1.0f)/2.0f;
circleLen = u*circleLenOut + (1.0f-u)*circleLenIn;
v.x = -sinang1*circleLen;
v.y = cosang1*circleLen;
v.z = 0.0f;
patch.setVec(jx++,patch.verts[ix] + v);
v.x = sinang1*circleLen;
v.y = -cosang1*circleLen;
v.z = 0.0f;
patch.setVec(jx++,patch.verts[ix] + v);
v.x = -sinang2*cosang1*circleLenMid;
v.y = -sinang2*sinang1*circleLenMid;
v.z = cosang2*circleLenMid;
patch.setVec(jx++,patch.verts[ix] + v);
v.x = sinang2*cosang1*circleLenMid;
v.y = sinang2*sinang1*circleLenMid;
v.z = -cosang2*circleLenMid;
patch.setVec(jx++,patch.verts[ix] + v);
// Build the patch
a = ((i+1)%segs)*sides + (j+1)%sides;
b = i*sides + (j+1)%sides;
c = i*sides + j;
d = ((i+1)%segs)*sides + j;
patch.patches[ix].SetType(PATCH_QUAD);
patch.patches[ix].setVerts(a, b, c, d);
patch.patches[ix].setVecs(
Tang(a,1),Tang(b,0),Tang(b,3),Tang(c,2),
Tang(c,0),Tang(d,1),Tang(d,2),Tang(a,3));
patch.patches[ix].setInteriors(kx, kx+1, kx+2, kx+3);
patch.patches[ix].smGroup = 1;
kx += 4;
ix++;
ang2 += delta2;
}
ang1 += delta1;
}
if(genUVs) {
int tv = 0;
int tvp = 0;
float fsegs = (float)segs;
float fsides = (float)sides;
float uScale = usePhysUVs ? ((float) 2.0f * PI * radius1) : 1.0f;
float vScale = usePhysUVs ? ((float) 2.0f * PI * radius2) : 1.0f;
for (i=0; i<=segs; i++) {
float u = (float)i / (fsegs-1);
for (j=0; j<=sides; j++,++tv) {
float v = (float)j / (fsides-1);
if (usePhysUVs)
patch.setTVert(tv, UVVert(vScale*v, uScale*u, 0.0f));
else
patch.setTVert(tv, UVVert(uScale*(1.0f-u), vScale*v, 0.0f));
if(j < sides && i < segs)
patch.getTVPatch(tvp++).setTVerts(tv, tv+1, tv+sides+2, tv+sides+1);
}
}
}
if( !patch.buildLinkages() )
{
assert(0);
}
patch.computeInteriors();
patch.InvalidateGeomCache();
}
void TriPatchObject::BuildPatch(TimeValue t,PatchMesh& amesh)
{
int nverts = 4;
int nvecs = 16;
float l, w;
int tex;
// Start the validity interval at forever and whittle it down.
ivalid = FOREVER;
pblock->GetValue( PB_LENGTH, t, l, ivalid );
pblock->GetValue( PB_WIDTH, t, w, ivalid );
pblock->GetValue( PB_TEXTURE, t, tex, ivalid );
amesh.setNumVerts(nverts);
amesh.setNumTVerts(tex ? nverts : 0);
amesh.setNumVecs(nvecs);
amesh.setNumPatches(2);
amesh.setNumTVPatches(tex ? 2 : 0);
Point3 v0 = Point3(-w, -l, 0.0f) / 2.0f;
Point3 v1 = v0 + Point3(w, 0.0f, 0.0f);
Point3 v2 = v0 + Point3(w, l, 0.0f);
Point3 v3 = v0 + Point3(0.0f, l, 0.0f);
// Create the vertices.
amesh.verts[0].flags = PVERT_COPLANAR;
amesh.verts[1].flags = PVERT_COPLANAR;
amesh.verts[2].flags = PVERT_COPLANAR;
amesh.verts[3].flags = PVERT_COPLANAR;
if(tex) {
amesh.setTVert(0, UVVert(0,0,0));
amesh.setTVert(1, UVVert(1,0,0));
amesh.setTVert(2, UVVert(1,1,0));
amesh.setTVert(3, UVVert(0,1,0));
}
amesh.setVert(0, v0);
amesh.setVert(1, v1);
amesh.setVert(2, v2);
amesh.setVert(3, v3);
// Create the vectors
MAKEVEC(0, v0, v1);
MAKEVEC(2, v1, v2);
MAKEVEC(4, v2, v3);
MAKEVEC(6, v3, v0);
MAKEVEC(8, v3, v1);
// Create patches.
amesh.MakeTriPatch(0, 0, 0, 1, 1, 9, 8, 3, 6, 7, 10, 11, 12, 1);
amesh.MakeTriPatch(1, 1, 2, 3, 2, 4, 5, 3, 8, 9, 13, 14, 15, 1);
Patch &p1 = amesh.patches[0];
Patch &p2 = amesh.patches[1];
if(tex) {
amesh.getTVPatch(0).setTVerts(0,1,3);
amesh.getTVPatch(1).setTVerts(1,2,3);
}
// Finish up patch internal linkages (and bail out if it fails!)
assert(amesh.buildLinkages());
// Calculate the interior bezier points on the PatchMesh's patches
amesh.computeInteriors();
amesh.InvalidateGeomCache();
// Tell the PatchMesh it just got changed
amesh.InvalidateMesh();
}
void ExtrudeMod::BuildPatchFromShape(TimeValue t,ModContext &mc, ObjectState * os, PatchMesh &pmesh) {
ShapeObject *shape = (ShapeObject *)os->obj;
float amount;
int levels,capStart,capEnd,capType;
pblock->GetValue(PB_AMOUNT,t,amount,FOREVER);
pblock->GetValue(PB_SEGS,t,levels,FOREVER);
if (levels<1) levels = 1;
pblock->GetValue(PB_CAPSTART,t,capStart,FOREVER);
pblock->GetValue(PB_CAPEND,t,capEnd,FOREVER);
pblock->GetValue(PB_CAPTYPE,t,capType,FOREVER);
BOOL texturing;
pblock->GetValue(PB_MAPPING, TimeValue(0), texturing, FOREVER);
BOOL genMatIDs;
pblock->GetValue(PB_GEN_MATIDS, TimeValue(0), genMatIDs, FOREVER);
BOOL useShapeIDs;
pblock->GetValue(PB_USE_SHAPEIDS, TimeValue(0), useShapeIDs, FOREVER);
BOOL smooth;
pblock->GetValue(PB_SMOOTH, TimeValue(0), smooth, FOREVER);
LimitValue(amount, -1000000.0f, 1000000.0f);
// Get the basic dimension stuff
float zSize = (float)fabs(amount);
float baseZ = 0.0f;
if(amount < 0.0f)
baseZ = amount;
// If the shape can convert itself to a BezierShape, have it do so!
BezierShape bShape;
if(shape->CanMakeBezier())
shape->MakeBezier(t, bShape);
else {
PolyShape pShape;
shape->MakePolyShape(t, pShape);
bShape = pShape; // UGH -- Convert it from a PolyShape -- not good!
}
//DebugPrint(_T("Extrude organizing shape\n"));
ShapeHierarchy hier;
bShape.OrganizeCurves(t, &hier);
// Need to flip the reversed polys...
bShape.Reverse(hier.reverse);
// ...and tell the hierarchy they're no longer reversed!
hier.reverse.ClearAll();
// Our shapes are now organized for patch-making -- Let's do the sides!
int polys = bShape.splineCount;
int poly, knot;
int levelVerts = 0, levelVecs = 0, levelPatches = 0, nverts = 0, nvecs = 0, npatches = 0;
int TVlevels = levels + 1, levelTVerts = 0, ntverts = 0, ntpatches = 0;
BOOL anyClosed = FALSE;
for(poly = 0; poly < polys; ++poly) {
Spline3D *spline = bShape.splines[poly];
if(!spline->KnotCount())
continue;
if(spline->Closed())
anyClosed = TRUE;
levelVerts += spline->KnotCount();
levelTVerts += (spline->Segments() + 1);
levelVecs += (spline->Segments() * 2);
levelPatches += spline->Segments();
}
nverts = levelVerts * (levels + 1);
npatches = levelPatches * levels;
nvecs = (levelVecs * (levels + 1)) + levels * levelVerts * 2 + npatches * 4;
if(texturing) {
ntverts = levelTVerts * TVlevels;
ntpatches = npatches;
}
pmesh.setNumVerts(nverts);
pmesh.setNumVecs(nvecs);
pmesh.setNumPatches(npatches);
pmesh.setNumTVerts(ntverts);
pmesh.setNumTVPatches(ntpatches);
// Create the vertices!
int vert = 0;
int level;
Point3 offset1, offset2;
for(poly = 0; poly < polys; ++poly) {
Spline3D *spline = bShape.splines[poly];
if(!spline->KnotCount())
continue;
int knots = spline->KnotCount();
for(level = 0; level <= levels; ++level) {
Point3 offset = Point3(0.0f, 0.0f, baseZ + (float)level / (float)levels * zSize);
if(level == 0)
offset1 = offset;
else
if(level == levels)
offset2 = offset;
for(knot = 0; knot < knots; ++knot) {
Point3 p = spline->GetKnotPoint(knot);
pmesh.setVert(vert++, p + offset);
}
}
}
assert(vert == nverts);
BOOL usePhysUVs = GetUsePhysicalScaleUVs();
// Maybe create the texture vertices
if(texturing) {
int tvert = 0;
int level;
for(poly = 0; poly < polys; ++poly) {
Spline3D *spline = bShape.splines[poly];
if(!spline->KnotCount())
continue;
// Make it a polyline
PolyLine pline;
spline->MakePolyLine(pline, 10);
int knots = spline->KnotCount();
for(level = 0; level < TVlevels; ++level) {
float tV = (float)level / (float)(TVlevels - 1);
float vScale = usePhysUVs ? amount : 1.0f;
int lverts = pline.numPts;
int tp = 0;
int texPts = spline->Segments() + 1;
float cumLen = 0.0f;
float totLen = pline.CurveLength();
float uScale = usePhysUVs ? totLen : 1.0f;
Point3 prevPt = pline.pts[0].p;
int plix = 0;
while(tp < texPts) {
Point3 &pt = pline[plix].p;
cumLen += Length(pt - prevPt);
prevPt = pt;
if(pline[plix].flags & POLYPT_KNOT) {
float tU;
if(tp == (texPts - 1))
tU = 1.0f;
else
tU = cumLen / totLen;
pmesh.setTVert(tvert++, UVVert(uScale*tU, vScale*tV, 0.0f));
tp++;
}
plix = (plix + 1) % pline.numPts;
}
}
}
assert(tvert == ntverts);
}
// Create the vectors!
int seg;
int vec = 0;
for(poly = 0; poly < polys; ++poly) {
Spline3D *spline = bShape.splines[poly];
if(!spline->KnotCount())
continue;
int segs = spline->Segments();
int knots = spline->KnotCount();
// First, the vectors on each level
for(level = 0; level <= levels; ++level) {
Point3 offset = Point3(0.0f, 0.0f, baseZ + (float)level / (float)levels * zSize);
for(seg = 0; seg < segs; ++seg) {
int seg2 = (seg + 1) % knots;
if(spline->GetLineType(seg) == LTYPE_CURVE) {
Point3 p = spline->GetOutVec(seg);
pmesh.setVec(vec++, p + offset);
p = spline->GetInVec(seg2);
pmesh.setVec(vec++, p + offset);
}
else {
Point3 p = spline->InterpBezier3D(seg, 0.333333f);
pmesh.setVec(vec++, p + offset);
p = spline->InterpBezier3D(seg, 0.666666f);
pmesh.setVec(vec++, p + offset);
}
}
}
// Now, the vectors between the levels
int baseVec = vec;
for(level = 0; level < levels; ++level) {
Point3 offsetA = Point3(0.0f, 0.0f, baseZ + (float)level / (float)levels * zSize);
Point3 offsetB = Point3(0.0f, 0.0f, baseZ + (float)(level + 1) / (float)levels * zSize);
Point3 offset1 = offsetA + (offsetB - offsetA) * 0.333333333f;
Point3 offset2 = offsetA + (offsetB - offsetA) * 0.666666666f;
for(knot = 0; knot < knots; ++knot) {
Point3 p = spline->GetKnotPoint(knot);
pmesh.setVec(vec++, p + offset1);
pmesh.setVec(vec++, p + offset2);
}
}
}
// Create the patches!
int np = 0;
int baseVert = 0;
int baseVec = 0;
for(poly = 0; poly < polys; ++poly) {
Spline3D *spline = bShape.splines[poly];
if(!spline->KnotCount())
continue;
int knots = spline->KnotCount();
int segs = spline->Segments();
int baseVec1 = baseVec; // Base vector index for this level
int baseVec2 = baseVec + segs * 2 * (levels + 1); // Base vector index for between levels
for(level = 0; level < levels; ++level) {
int sm = 0;
BOOL firstSmooth = (spline->GetLineType(0) == LTYPE_CURVE && spline->GetLineType(segs-1) == LTYPE_CURVE && (spline->GetKnotType(0) == KTYPE_AUTO || spline->GetKnotType(0) == KTYPE_BEZIER)) ? TRUE : FALSE;
for(seg = 0; seg < segs; ++seg, vec += 4) {
int prevseg = (seg + segs - 1) % segs;
int seg2 = (seg + 1) % knots;
int a,b,c,d,ab,ba,bc,cb,cd,dc,da,ad;
MtlID mtl = useShapeIDs ? spline->GetMatID(seg) : 2;
a = baseVert + seg;
b = baseVert + seg2;
c = b + knots;
d = a + knots;
ab = baseVec1 + seg * 2;
ba = ab + 1;
bc = baseVec2 + seg2 * 2;
cb = bc + 1;
cd = ba + (segs * 2);
dc = ab + (segs * 2);
da = baseVec2 + seg * 2 + 1;
ad = da - 1;
//DebugPrint(_T("Making patch %d: %d (%d %d) %d (%d %d) %d (%d %d) %d (%d %d)\n"),np, a, ab, ba, b, bc, cb, c, cd, dc, d, da, ad);
// If the vertex is not smooth, go to the next group!
if(seg > 0 && !(spline->GetLineType(prevseg) == LTYPE_CURVE && spline->GetLineType(seg) == LTYPE_CURVE && (spline->GetKnotType(seg) == KTYPE_AUTO || spline->GetKnotType(seg) == KTYPE_BEZIER))) {
sm++;
if(sm > 2)
sm = 1;
}
DWORD smoothGroup = 1 << sm;
if(seg == segs - 1 && firstSmooth) {
smoothGroup |= 1;
}
pmesh.MakeQuadPatch(np, a, ab, ba, b, bc, cb, c, cd, dc, d, da, ad, vec, vec+1, vec+2, vec+3, smooth ? smoothGroup : 0);
pmesh.setPatchMtlIndex(np++, genMatIDs ? mtl : 0);
}
baseVert += knots;
baseVec1 += (segs * 2);
baseVec2 += (knots * 2);
}
baseVert += knots;
baseVec += (segs * 2 * (levels + 1) + knots * 2 * levels);
}
assert(vec == nvecs);
assert(np == npatches);
// Maybe create the texture patches!
if(texturing) {
int ntp = 0;
int baseTVert = 0;
for(poly = 0; poly < polys; ++poly) {
Spline3D *spline = bShape.splines[poly];
if(!spline->KnotCount())
continue;
int pknots = spline->Segments() + 1;
int pverts = pknots * TVlevels;
int segs = spline->Segments();
for(level = 0; level < levels; ++level) {
for(seg = 0; seg < segs; ++seg) {
int prevseg = (seg + segs - 1) % segs;
int seg2 = seg + 1;
int a,b,c,d;
a = baseTVert + seg;
b = baseTVert + seg2;
c = b + pknots;
d = a + pknots;
TVPatch &tp = pmesh.getTVPatch(ntp++);
tp.setTVerts(a, b, c, d);
}
baseTVert += pknots;
}
baseTVert += pknots;
}
assert(ntp == ntpatches);
}
// If capping, do it!
if(anyClosed && (capStart || capEnd)) {
PatchCapInfo capInfo;
bShape.MakeCap(t, capInfo);
// Build information for capping
PatchCapper capper(bShape);
if(capStart) {
vert = 0;
int baseVec = 0;
for(poly = 0; poly < polys; ++poly) {
Spline3D *spline = bShape.splines[poly];
if(!spline->KnotCount())
continue;
PatchCapPoly &capline = capper[poly];
int lverts = spline->KnotCount();
for(int v = 0; v < lverts; ++v)
capline.SetVert(v, vert++); // Gives this vert's location in the mesh!
vert += lverts * levels;
vec = baseVec;
int lvecs = spline->Segments() * 2;
for(int v = 0; v < lvecs; ++v)
capline.SetVec(v, vec++); // Gives this vec's location in the mesh!
baseVec += lvecs * (levels + 1) + spline->KnotCount() * levels * 2;
}
// Create a work matrix for capping
Matrix3 mat = TransMatrix(offset1);
int oldPatches = pmesh.numPatches;
capper.CapPatchMesh(pmesh, capInfo, TRUE, 16, &mat, genMatIDs ? -1 : 0);
// If texturing, create the texture patches and vertices
if(texturing)
MakePatchCapTexture(pmesh, Inverse(mat), oldPatches, pmesh.numPatches, usePhysUVs);
}
if(capEnd) {
int baseVert = 0;
int baseVec = 0;
for(poly = 0; poly < polys; ++poly) {
Spline3D *spline = bShape.splines[poly];
if(!spline->KnotCount())
continue;
PatchCapPoly &capline = capper[poly];
int lverts = spline->KnotCount();
int vert = baseVert + lverts * levels;
for(int v = 0; v < lverts; ++v)
capline.SetVert(v, vert++); // Gives this vert's location in the mesh!
baseVert += lverts * (levels + 1);
int lvecs = spline->Segments()*2;
int vec = baseVec + lvecs * levels;
for(int v = 0; v < lvecs; ++v)
capline.SetVec(v, vec++); // Gives this vec's location in the mesh!
baseVec += lvecs * (levels + 1) + spline->KnotCount() * levels * 2;
}
// Create a work matrix for grid capping
Matrix3 mat = TransMatrix(offset2);
int oldPatches = pmesh.numPatches;
capper.CapPatchMesh(pmesh, capInfo, FALSE, 16, &mat, genMatIDs ? -1 : 0);
// If texturing, create the texture patches and vertices
if(texturing)
MakePatchCapTexture(pmesh, Inverse(mat), oldPatches, pmesh.numPatches, usePhysUVs);
}
}
//watje new mapping
if(texturing)
{
if (ver < 4)
{
for (int i = 0; i < pmesh.numPatches; i++)
pmesh.patches[i].flags |= PATCH_LINEARMAPPING;
}
}
// Ready the patch representation!
if( !pmesh.buildLinkages() )
{
assert(0);
}
pmesh.computeInteriors();
}
