private ISurface CreateSegment(int uIdx, int vIdx,
MathFunction function)
{
var meshDensity = Properties.MeshDensity;
var uSize = Math.Abs(UDimension.Max - UDimension.Min)
/(UDimension.KnotCount - 1);
var vSize = Math.Abs(VDimension.Max - VDimension.Min)
/(VDimension.KnotCount - 1);
var u0 = UDimension.Min + uSize*uIdx; //afv[uIdx][vIdx].X;
var u1 = UDimension.Min + uSize*(uIdx + 1);
var v0 = VDimension.Min + vSize*vIdx;
var v1 = VDimension.Min + vSize*(vIdx + 1);
var uKnotsDistance = Math.Abs(u1 - u0);
var xCount = Math.Ceiling(uKnotsDistance/meshDensity);
var yKnotDistance = Math.Abs(v1 - v0);
var yCount = Math.Ceiling(yKnotDistance/meshDensity);
var verticesCount = (int) ((++xCount)*(++yCount));
var segmentMeshVertices =
new VertexPositionNormalColor[verticesCount];
var k = 0;
var x = (float) u0;
for (var i = 0; i < xCount; i++, x += meshDensity)
{
x = x < u1 ? x : (float) u1;
var y = (float) v0;
for (var j = 0; j < yCount; j++, y += meshDensity)
{
y = y < v1 ? y : (float) v1;
var z = (float) function.SafeCall(x, y);
segmentMeshVertices[k++] =
new VertexPositionNormalColor(new Vector3(x, y, z),
DefaultNormal,
DefaultColor);
}
}
return new SimpleSurface(segmentMeshVertices, (int) xCount,
(int) yCount);
}
