Away3D Forum Custom polygon shape

yyovchev, Newbie
Posted: 13 July 2012 06:57 PM Total Posts: 29

I am pretty sure I am doing it wrong but I don’t understand how this works. Please anyone explain to me what are indices and how are they calculated and how to get this example to work.

var vertexes:Vector.<Number> = new Vector.<Number>;
  vertexes.push(4,0,-4);
 vertexes.push(1014,0,-4);
 vertexes.push(1014,0,-1623);
 vertexes.push(727,0,-1794);
 vertexes.push(291,0,-1794);
 vertexes.push(4,0,-1623);


      var normals:Vector.<Number> = new Vector.<Number>;
        normals.push(0,1,0);
        normals.push(0,1,0);
 normals.push(0,1,0);
 normals.push(0,1,0);
 normals.push(0,1,0);
 normals.push(0,1,0);
   
      
      var uvs:Vector.<Number> = new Vector.<Number>;
      uvs.push(0,1);
      uvs.push(0,1);
      uvs.push(0,1);
      uvs.push(0,1);
      uvs.push(0,1);
      uvs.push(0,1);
     
      var indices:Vector.<uint> = Vector.<uint>([0,1,2,3,4,5]);
    
      var subGeometry:SubGeometry = new SubGeometry();
      subGeometry.updateVertexData(vertexes);
      subGeometry.updateVertexNormalData(normals);
      subGeometry.updateUVData(uvs);
      subGeometry.updateIndexData(indices);
      
      var geometry:Geometry = new Geometry();
      geometry.addSubGeometry(subGeometry);
        
      var sphere:SphereGeometry = new SphereGeometry();
     
      var mesh:Mesh = new Mesh(geometry, floorMat);
      scene.addChild(mesh); 

yyovchev, Newbie
Posted: 13 July 2012 09:24 PM Total Posts: 29 [ # 1 ]

Ok I understood this by myself


var indices:Vector.<uint> = Vector.<uint>([0,1,2, 0,2,3, 0,3,4, 0,4,5]);

Is there any way this to be done dynamically because I receive vertex coordinates from elsewhere?

yyovchev, Newbie
Posted: 14 July 2012 12:38 AM Total Posts: 29 [ # 2 ]

Its done. Using this: http://actionsnippet.com/?p=1462 for triangulation I make this dynamic and now I can draw custom surfaces!

lanceaeby, Newbie
Posted: 18 July 2012 07:26 PM Total Posts: 8 [ # 3 ]

Did you get this working in 3D? The example link you posted only deals with drawing a 2D polygon. My team and I are also looking to draw custom shapes from a bunch of dynamically generated points. Any help/insight you have would be greatly appreciated.

yyovchev, Newbie
Posted: 18 July 2012 07:48 PM Total Posts: 29 [ # 4 ]

In my case I needed custom 2D polygon and this triangulation class was perfect for me. I am not shure for 3D maybe someone else could suggest something.

Custom polygon shape Software: Away3D 4.x

yyovchev, Newbie Posted: 13 July 2012 06:57 PM Total Posts: 29 I am pretty sure I am doing it wrong but I don’t understand how this works. Please anyone explain to me what are indices and how are they calculated and how to get this example to work. var vertexes:Vector.<Number> = new Vector.<Number>; vertexes.push(4,0,-4); vertexes.push(1014,0,-4); vertexes.push(1014,0,-1623); vertexes.push(727,0,-1794); vertexes.push(291,0,-1794); vertexes.push(4,0,-1623); var normals:Vector.<Number> = new Vector.<Number>; normals.push(0,1,0); normals.push(0,1,0); normals.push(0,1,0); normals.push(0,1,0); normals.push(0,1,0); normals.push(0,1,0); var uvs:Vector.<Number> = new Vector.<Number>; uvs.push(0,1); uvs.push(0,1); uvs.push(0,1); uvs.push(0,1); uvs.push(0,1); uvs.push(0,1); var indices:Vector.<uint> = Vector.<uint>([0,1,2,3,4,5]); var subGeometry:SubGeometry = new SubGeometry(); subGeometry.updateVertexData(vertexes); subGeometry.updateVertexNormalData(normals); subGeometry.updateUVData(uvs); subGeometry.updateIndexData(indices); var geometry:Geometry = new Geometry(); geometry.addSubGeometry(subGeometry); var sphere:SphereGeometry = new SphereGeometry(); var mesh:Mesh = new Mesh(geometry, floorMat); scene.addChild(mesh);
yyovchev, Newbie Posted: 13 July 2012 09:24 PM Total Posts: 29 [ # 1 ] Ok I understood this by myself `var indices:Vector.<uint> = Vector.<uint>([0,1,2, 0,2,3, 0,3,4, 0,4,5]);` Is there any way this to be done dynamically because I receive vertex coordinates from elsewhere?
yyovchev, Newbie Posted: 14 July 2012 12:38 AM Total Posts: 29 [ # 2 ] Its done. Using this: http://actionsnippet.com/?p=1462 for triangulation I make this dynamic and now I can draw custom surfaces!
lanceaeby, Newbie Posted: 18 July 2012 07:26 PM Total Posts: 8 [ # 3 ] Did you get this working in 3D? The example link you posted only deals with drawing a 2D polygon. My team and I are also looking to draw custom shapes from a bunch of dynamically generated points. Any help/insight you have would be greatly appreciated.
yyovchev, Newbie Posted: 18 July 2012 07:48 PM Total Posts: 29 [ # 4 ] In my case I needed custom 2D polygon and this triangulation class was perfect for me. I am not shure for 3D maybe someone else could suggest something.

Custom polygon shape

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