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bulk rendering

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This commit is contained in:
David Allemang
2018-04-04 18:16:06 -04:00
parent cb90af4fb7
commit bd44b4898c
1 changed files with 53 additions and 24 deletions
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77
Tetrahedrons/TetrahedronWindow.cs
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@@ -23,11 +23,12 @@ namespace Tetrahedrons
private MVec4D _a = MVec4D.UnitX;
private MVec4D _b = MVec4D.UnitY;
private Simplex _pent;
private Simplex _intr;
private Simplex[] _simplexes;
private Simplex[] _intersections;
private double _t;
private bool _pause;
private bool _wire;
protected override void OnLoad(EventArgs e)
{
@@ -38,12 +39,27 @@ namespace Tetrahedrons
_view = Matrix4.LookAt(Vector3.Zero, -new Vector3(.86f, .5f, 1), Vector3.UnitZ);
_pent = new Simplex( // not-quite-regular pentatope
new Vector4d(1, -1, -1, -1),
new Vector4d(-1, 1, -1, -1),
new Vector4d(-1, -1, 1, -1),
new Vector4d(-1, -1, -1, 1),
new Vector4d(1, 1, 1, 1));
const int n = 5;
_simplexes = new Simplex[n * n * n * n];
_intersections = new Simplex[_simplexes.Length];
var off = (new Vector4d(n - 1, n - 1, n - 1, n - 1)) / 2;
int i = 0;
for (var x = 0; x < n; x++)
for (var y = 0; y < n; y++)
for (var z = 0; z < n; z++)
for (var w = 0; w < n; w++)
{
var d = new Vector4d(x, y, z, w);
_simplexes[i] = new Simplex( // not-quite-regular pentatope
new Vector4d(+.5, -.5, -.5, -.5) + d - off,
new Vector4d(-.5, +.5, -.5, -.5) + d - off,
new Vector4d(-.5, -.5, +.5, -.5) + d - off,
new Vector4d(-.5, -.5, -.5, +.5) + d - off,
new Vector4d(+.5, +.5, +.5, +.5) + d - off);
_intersections[i] = new Simplex();
i++;
}
}
protected override void OnRenderFrame(FrameEventArgs e)
@@ -67,25 +83,31 @@ namespace Tetrahedrons
GL.Begin(PrimitiveType.Lines);
GL.Color3(0f, 0, 0);
foreach (var f in _intr.Edjes)
Util.Vertex3(_intr.Verts[f]);
foreach (var intr in _intersections)
foreach (var f in intr.Edjes)
Util.Vertex3(intr.Verts[f]);
GL.End();
GL.Begin(PrimitiveType.Triangles);
foreach (var f in _intr.Faces)
foreach (var intr in _intersections)
foreach (var f in intr.Faces)
{
Util.Color3(_intr.Verts[f]);
Util.Vertex3(_intr.Verts[f]);
Util.Color3(intr.Verts[f]);
Util.Vertex3(intr.Verts[f]);
}
GL.End();
GL.Disable(EnableCap.DepthTest);
GL.Begin(PrimitiveType.Lines);
foreach (var f in _pent.Edjes)
Util.Vertex4(_pent.Verts[f]);
if (_wire)
{
GL.Begin(PrimitiveType.Lines);
foreach (var sim in _simplexes)
foreach (var f in sim.Edjes)
Util.Vertex4(sim.Verts[f]);
GL.End();
GL.End();
}
SwapBuffers();
}
@@ -94,23 +116,27 @@ namespace Tetrahedrons
{
base.OnUpdateFrame(e);
_proj3d = Matrix4.CreateOrthographic(6, 6f * Height / Width, -4, 4);
var w = 10f;
var d = w;
_proj3d = Matrix4.CreateOrthographic(w, w * Height / Width, -d / 2, d / 2);
if (_pause) return;
_t += e.Time;
var pln = .5 * MVec4D.UnitXy + MVec4D.UnitZw;
var pln = MVec4D.UnitXy + MVec4D.UnitXz + MVec4D.UnitYw;
var r = MVec4D.Rotor(e.Time / 10, pln.Normalized);
for (var i = 0; i < _pent.Verts.Length; i++)
_pent.Verts[i] |= r;
foreach (var pent in _simplexes)
for (var i = 0; i < pent.Verts.Length; i++)
pent.Verts[i] |= r;
var blade = MVec4D.UnitXyz;
var pivot = MVec4D.Zero;
pivot = .9 * Math.Sin(_t / 5) * MVec4D.UnitW;
_intr = _pent.Intersect(blade, pivot);
for (var i = 0; i < _simplexes.Length; i++)
{
_intersections[i] = _simplexes[i].Intersect(blade, pivot);
}
}
protected override void OnKeyDown(KeyboardKeyEventArgs e)
@@ -119,6 +145,9 @@ namespace Tetrahedrons
if (e.Key == Key.Space)
_pause = !_pause;
if (e.Key == Key.Comma)
_wire = !_wire;
}
}
}