public static VertexPositionNormalTexture[] Create(float radius, float height, int edgeCount, ITextureDefintion textureDefinition)
{
var edgePoints = CircleComposer.GetEdgePoints(radius, edgeCount);
var vertices = new List <VertexPositionNormalTexture>();
var halfHeight = height / 2f;
for (int i = 0; i < edgeCount; i++)
{
var edgePoint = edgePoints[i];
var nextEdgePoint = edgePoints[0];
if (i != edgeCount - 1)
{
nextEdgePoint = edgePoints[i + 1];
}
vertices.AddRange(RectangleComposer.Create(new[]
{
new Vector3(-halfHeight, edgePoint.X, edgePoint.Y),
new Vector3(halfHeight, edgePoint.X, edgePoint.Y),
new Vector3(-halfHeight, nextEdgePoint.X, nextEdgePoint.Y),
new Vector3(halfHeight, nextEdgePoint.X, nextEdgePoint.Y),
}, textureDefinition));
textureDefinition.NextElement();
}
return(vertices.ToArray());
}
public static VertexPositionNormalTexture[] Create(float radius, float height, int edgeCount, int levels,
params ITextureDefintion[] textureDefinitions)
{
var levelHeight = height / levels;
var halfHeight = levelHeight / 2f;
var vertices = new List <VertexPositionNormalTexture>();
for (int level = 0; level < levels; level++)
{
var levelRadius = (float)Math.Sqrt(1f - (float)level / levels) * radius;
var levelRadiusUp = (float)Math.Sqrt(1f - (float)(level + 1) / levels) * radius;
var edgePoints = CircleComposer.GetEdgePoints(levelRadius, edgeCount);
var edgePointsUp = CircleComposer.GetEdgePoints(levelRadiusUp, edgeCount);
var textureDefinition = textureDefinitions[level];
for (int i = 0; i < edgeCount; i++)
{
var edgePoint = edgePoints[i];
var nextEdgePoint = edgePoints[0];
var edgePointUp = edgePointsUp[i];
var nextEdgePointUp = edgePointsUp[0];
if (i != edgeCount - 1)
{
nextEdgePoint = edgePoints[i + 1];
nextEdgePointUp = edgePointsUp[i + 1];
}
var levelHeightPos = levelHeight * level;
vertices.AddRange(RectangleComposer.Create(new[]
{
new Vector3(levelHeightPos - halfHeight, edgePoint.X, edgePoint.Y),
new Vector3(levelHeightPos + halfHeight, edgePointUp.X, edgePointUp.Y),
new Vector3(levelHeightPos - halfHeight, nextEdgePoint.X, nextEdgePoint.Y),
new Vector3(levelHeightPos + halfHeight, nextEdgePointUp.X, nextEdgePointUp.Y),
}, textureDefinition));
textureDefinition.NextElement();
}
}
return(vertices.ToArray());
}