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torus generation

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This commit is contained in:
David Allemang
2018-04-13 17:28:18 -04:00
parent 2983d0c959
commit c8627cba4c
1 changed files with 60 additions and 9 deletions
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69
Platformer/PlatformWindow.cs
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@@ -66,20 +66,19 @@ namespace Platformer
private float _time;
private void GenSphere(int res)
private void GenSphere(uint res)
{
var n = (uint) res;
var tv = new List<Vector3>();
var ns = new List<uint>();
tv.Add(new Vector3(0, 0, 0));
var c = n + 1;
for (var p = 0; p <= n; p++)
for (var t = 0; t <= n; t++)
var c = res + 1;
for (var p = 0; p <= res; p++)
for (var t = 0; t <= res; t++)
{
var pp = Math.PI * p / n;
var tt = Math.PI * 2 * t / n;
var pp = Math.PI * p / res;
var tt = Math.PI * 2 * t / res;
tv.Add(new Vector3(
(float) (Math.Sin(pp) * Math.Cos(tt)),
(float) (Math.Sin(pp) * Math.Sin(tt)),
@@ -111,6 +110,57 @@ namespace Platformer
_tCount = _tInds.Count / 4;
}
private void GenTorus(uint res, double a, double b)
{
var tv = new List<Vector3>();
var ns = new List<uint>();
for (uint t = 0; t <= res; t++)
for (uint p = 0; p <= res; p++)
{
var tt = Math.PI * 2 * t / res;
var pp = Math.PI * 2 * p / res;
var v = new Vector3d(
(a - b * Math.Cos(pp)) * Math.Cos(tt),
(a - b * Math.Cos(pp)) * Math.Sin(tt),
b * Math.Sin(pp)
);
tv.Add((Vector3) v);
}
for (uint t = 0; t < res; t++)
for (uint p = 1; p < res; p++)
{
var k = res + 1;
ns.Add(t * k);
ns.Add(t * k + p);
ns.Add(t * k + p + 1);
ns.Add(t * k + p + k);
ns.Add(t * k);
ns.Add(t * k + p + 1);
ns.Add(t * k + p + k);
ns.Add(t * k + p + k + 1);
ns.Add(t * k);
ns.Add(t * k + k);
ns.Add(t * k + p + k);
ns.Add(t * k + p + k + 1);
}
if (_tVerts == null)
_tVerts = new Buffer<Vector4>();
if (_tInds == null)
_tInds = new Buffer<uint>();
_tVerts.SetData(tv.Select(v => new Vector4(v, 1)).ToArray());
_tInds.SetData(ns.ToArray());
_tCount = _tInds.Count / 4;
}
protected override void OnLoad(EventArgs e)
{
@@ -126,7 +176,8 @@ namespace Platformer
var comp = Shader.Compile("shaders/intersect.comp");
_compute = Program.Link(comp);
GenSphere(20);
// GenSphere(20);
GenTorus(20, 1, .5);
_pVerts = new Buffer<Vector4>(_tCount * 4);
_pEdges = new Buffer<uint>(_tCount * 8);
@@ -188,7 +239,7 @@ namespace Platformer
GL.DrawElements(BeginMode.Lines, _pEdges.Count, DrawElementsType.UnsignedInt, 0);
}
if (_tOutline)
if (_tetra && _tOutline)
{
GL.BindVertexArray(_tetraVao);
GL.Enable(EnableCap.DepthTest);