public int[] GetIndecies()
{
var indecies = new int[cone.PointCount * 6];
TesselationToolbox.GetIndeciesForTriangeFan(0, 1, cone.PointCount, ref indecies, 0, true);
TesselationToolbox.GetIndeciesForTriangeFan(cone.PointCount + 1, 1, cone.PointCount, ref indecies,
cone.PointCount * 3, false);
return(indecies);
}
public Vec3[] GetPositions()
{
var vecHeight = new Vec3(0, cone.Height, 0);
var positions = new Vec3[cone.PointCount + 2];
positions[0] = vecHeight / 2;
positions[cone.PointCount + 1] = -vecHeight / 2;
TesselationToolbox.GetCirclePointsOnXZPlane(-vecHeight / 2, cone.Radius, cone.PointCount, ref positions, 1);
return(positions);
}
public int[] GetIndecies()
{
var indecies = new int[frustrumOfCone.PointCount * 12];
TesselationToolbox.GetIndeciesForTriangeFan(0, 1, frustrumOfCone.PointCount, ref indecies, 0, true);
TesselationToolbox.GetIndeciesForTriangeFan(2 * frustrumOfCone.PointCount + 1,
frustrumOfCone.PointCount + 1, frustrumOfCone.PointCount,
ref indecies, frustrumOfCone.PointCount * 3, false);
TesselationToolbox.GetIndeciesForTriangeStripBetweenTwoPointCircles(1, frustrumOfCone.PointCount + 1,
frustrumOfCone.PointCount, ref indecies,
frustrumOfCone.PointCount * 6);
return(indecies);
}
public Vec3[] GetPositions()
{
var vecHeight = new Vec3(0, frustrumOfCone.Height, 0);
var positions = new Vec3[frustrumOfCone.PointCount * 2 + 2];
positions[0] = vecHeight / 2;
positions[frustrumOfCone.PointCount * 2 + 1] = -vecHeight / 2;
TesselationToolbox.GetCirclePointsOnXZPlane(vecHeight / 2, frustrumOfCone.Radius2,
frustrumOfCone.PointCount, ref positions, 1);
TesselationToolbox.GetCirclePointsOnXZPlane(-vecHeight / 2, frustrumOfCone.Radius1,
frustrumOfCone.PointCount, ref positions,
frustrumOfCone.PointCount + 1);
return(positions);
}
public int[] GetIndecies()
{
var indecies = new int[(sphere.PointsPerCircle * 2) * 3 + (sphere.CircleCount - 1) * (2 * sphere.PointsPerCircle) * 3];
TesselationToolbox.GetIndeciesForTriangeFan(0, 1, sphere.PointsPerCircle, ref indecies, 0, true);
TesselationToolbox.GetIndeciesForTriangeFan(sphere.CircleCount * sphere.PointsPerCircle + 1,
((sphere.CircleCount - 1) * sphere.PointsPerCircle) + 1,
sphere.PointsPerCircle, ref indecies, sphere.PointsPerCircle * 3,
false);
for (var i = 0; i < sphere.CircleCount - 1; i++)
{
TesselationToolbox.GetIndeciesForTriangeStripBetweenTwoPointCircles(i * sphere.PointsPerCircle + 1,
(i + 1) * sphere.PointsPerCircle + 1,
sphere.PointsPerCircle,
ref indecies,
sphere.PointsPerCircle * 6 +
i * sphere.PointsPerCircle * 6);
}
return(indecies);
}
public Vec3[] GetPositions()
{
var positions = new Vec3[sphere.CircleCount * sphere.PointsPerCircle + 2];
var vecHeight = new Vec3(0, sphere.Radius, 0);
positions[0] = vecHeight;
positions[sphere.CircleCount * sphere.PointsPerCircle + 1] = -vecHeight;
var step = (2 * vecHeight) / (sphere.CircleCount + 1);
for (var i = 0; i < sphere.CircleCount; i++)
{
var vecHeightTmp = vecHeight - (i + 1) * step;
var radiusTmp = Math.Sqrt(sphere.Radius * sphere.Radius - vecHeightTmp.Length * vecHeightTmp.Length);
TesselationToolbox.GetCirclePointsOnXZPlane(vecHeightTmp,
radiusTmp,
sphere.PointsPerCircle,
ref positions,
i * sphere.PointsPerCircle + 1);
}
return(positions);
}
