public void AddMesh(VectorPath path, float xOffset, float yOffset, Triangulator triangulator)
{
XOffset = xOffset;
YOffset = yOffset;
StartIndex = CurrentVertex;
// Start triangulator (also clears VC):
triangulator.Reset();
// Update triangulator vert offset:
triangulator.VertexOffset = CurrentVertex;
// Triangulator chain:
FirstInContour = null;
LastInContour = null;
VectorPoint contourStart = path.FirstPathNode;
VectorPoint current = contourStart;
// Update acc:
Triangulator = triangulator;
CurrentAccuracy = TextureCameras.Accuracy;
Winding = true;
while (current != null)
{
if (current.IsClose || current.Next == null)
{
// Triangulate current listing:
if (FirstInContour != null)
{
// Triangulate:
int triangleCount = triangulator.VertexCount - 2;
// Complete the triangulator chain:
triangulator.Complete(FirstInContour, LastInContour);
#if !TEXT_IS_CLOCKWISE
// Text directionality:
triangulator.FindWinding();
Winding = triangulator.Clockwise;
#endif
if (triangleCount > 0)
{
triangulator.Triangulate(Triangles, triangleCount, CurrentTriangle);
CurrentTriangle += triangleCount * 3;
}
}
FirstInContour = null;
LastInContour = null;
// Add the edges:
VectorPoint edge = contourStart;
// Reset:
Moved = true;
CloseBeforeThis = true;
// Update acc:
Triangulator = null;
CurrentAccuracy = TextureCameras.Accuracy;
while (edge != null)
{
if (edge.IsClose || edge.Next == null)
{
IsClosing = true;
CloseX = edge.X;
CloseY = edge.Y;
}
else
{
IsClosing = false;
}
if (edge.IsCurve || !edge.HasLine)
{
// Curves and moveto's
edge.ComputeLinePoints(this);
}
else
{
if (TextureCameras.SD)
{
// Add the last point only:
AddPoint(edge.X, edge.Y);
}
else
{
edge.ComputeLinePoints(this);
}
}
if (IsClosing)
{
// End of this contour:
break;
}
CloseBeforeThis = false;
// Hop to the next one:
edge = edge.Next;
}
// Clear VC:
triangulator.VertexCount = 0;
// Update triangulator vert offset:
triangulator.VertexOffset = CurrentVertex;
// Update start:
contourStart = current.Next;
// Restore acc/ triangulator:
Triangulator = triangulator;
CurrentAccuracy = TextureCameras.Accuracy;
}
else if (current.HasLine && current.IsCurve)
{
current.ComputeLinePoints(this);
}
else
{
AddPoint(current.X, current.Y);
}
// Hop to the next one:
current = current.Next;
}
}
/// <summary>Get the verts/ tris/ uv of this in 3D.</summary>
public void GetExtrude(Text3D text,int vertIndex,int triIndex,int vertCount,int triCount,float scale,ref float left,ref float top){
// What's the curve accuracy?
float accuracy=TextExtrude.CurveAccuracy;
if(Characters==null){
return;
}
// Create a triangulator - it will "select" a letter one at a time:
Triangulator triangulator=new Triangulator(text.Vertices,0,0);
triangulator.Clockwise=TextExtrude.Inverse;
for(int c=0;c<Characters.Length;c++){
Glyph character=Characters[c];
if(character==null || character.Space){
continue;
}
if(character.Width==0f){
character.RecalculateMeta();
}
if(Kerning!=null){
left+=Kerning[c] * FontSize;
}
int frontIndex=vertIndex;
// The set of first nodes - these essentially identify where contours start. 0 is always present if there is at least one contour.
List<int> firstNodes=new List<int>();
// Compute the vertices:
character.GetVertices(text.Vertices,text.Normals,accuracy,left,-top,scale,ref vertIndex,firstNodes);
// Duplicate and offset:
int count=vertIndex-frontIndex;
if(count==0){
// Ignore
continue;
}
// Future note:
// - VectorPath.HoleSort seems to sort letters like i too.
// - This results in a count of 1 (we're expecting 2)
// - For each contour (foreach firstNodes), triangulate individually.
// - Ensure the triangle count matches too. May need to move firstNodes set.
// Select these verts in the triangulator:
triangulator.Select(frontIndex,count);
// Dupe the verts:
for(int v=0;v<count;v++){
Vector3 vert=text.Vertices[frontIndex+v];
vert.z=Extrude;
text.Vertices[vertIndex+v]=vert;
text.Normals[vertIndex+v]=new Vector3(0f,0f,1f);
text.Normals[frontIndex+v]=new Vector3(0f,0f,-1f);
}
// How many tri's in this char? (single face only)
int charTris=count-2;
// Perform triangulation of the front face:
triangulator.Triangulate(text.Triangles,charTris,triIndex);
// Seek:
int triIndexCount=charTris*3;
triIndex+=triIndexCount;
// Duplicate the results for the back face and invert them:
for(int t=0;t<charTris;t++){
text.Triangles[triIndex]=count+text.Triangles[triIndex-triIndexCount];
triIndex++;
// Last two are inverted as the back face looks the other way:
text.Triangles[triIndex]=count+text.Triangles[triIndex-triIndexCount+1];
triIndex++;
text.Triangles[triIndex]=count+text.Triangles[triIndex-triIndexCount-1];
triIndex++;
}
// Time for the sides!
// How many contours?
int contourCount=firstNodes.Count;
// Get the current first:
int currentFirst=firstNodes[0];
int contourIndex=1;
// Get the "next" first:
int nextFirst;
if(contourCount>1){
nextFirst=firstNodes[1];
}else{
nextFirst=-1;
}
// Get the back face vertex indices:
int backIndex=vertIndex;
// For each edge..
for(int i=0;i<count;i++){
// Get the next index:
int next=i+1;
if(next==count || next==nextFirst){
// Loop back instead:
next=currentFirst;
// Advance to the next one:
currentFirst=nextFirst;
contourIndex++;
// Update nextFirst too:
if(contourIndex<contourCount){
nextFirst=firstNodes[contourIndex];
}else{
nextFirst=-1;
}
}
// Add two triangles from front face -> back face:
text.Triangles[triIndex]=frontIndex+i;
triIndex++;
text.Triangles[triIndex]=backIndex+i;
triIndex++;
text.Triangles[triIndex]=backIndex+next;
triIndex++;
text.Triangles[triIndex]=frontIndex+next;
triIndex++;
text.Triangles[triIndex]=frontIndex+i;
triIndex++;
text.Triangles[triIndex]=backIndex+next;
triIndex++;
}
// Seek vert index over the backface:
vertIndex+=count;
// Move left along:
left+=(character.AdvanceWidth * FontSize)+LetterSpacing;
}
}
