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sphere generation

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This commit is contained in:
David Allemang
2018-04-13 16:42:36 -04:00
parent 2212fb762e
commit 2983d0c959
1 changed files with 140 additions and 74 deletions
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214
Platformer/PlatformWindow.cs
View File

@@ -1,6 +1,9 @@
using System;
using System.Collections.Generic;
using System.Data.Common;
using System.Data.SqlTypes;
using System.Drawing;
using System.Linq;
using OpenTK;
using OpenTK.Graphics.OpenGL;
using OpenTK.Input;
@@ -43,6 +46,7 @@ namespace Platformer
private Buffer<Vector4> _tVerts;
private Buffer<uint> _tInds;
private int _tCount;
private VertexArray _tetraVao;
private VertexArray _polyVao;
@@ -54,7 +58,58 @@ namespace Platformer
private Buffer<uint> _tEdges;
private Buffer<uint> _tFaces;
private int _tetraCount;
private bool _flat = false;
private bool _tetra = true;
private bool _pOutline = true;
private bool _tOutline = true;
private float _time;
private void GenSphere(int 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 pp = Math.PI * p / n;
var tt = Math.PI * 2 * t / n;
tv.Add(new Vector3(
(float) (Math.Sin(pp) * Math.Cos(tt)),
(float) (Math.Sin(pp) * Math.Sin(tt)),
(float) (Math.Cos(pp))
));
}
for (uint i = 0; i < c - 1; i++)
for (uint j = 0; j < c - 1; j++)
{
var k = 1 + i + j * c;
ns.Add(0);
ns.Add(k);
ns.Add(k + 1);
ns.Add(k + c);
ns.Add(0);
ns.Add(k + c + 1);
ns.Add(k + 1);
ns.Add(k + c);
}
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)
@@ -71,55 +126,14 @@ namespace Platformer
var comp = Shader.Compile("shaders/intersect.comp");
_compute = Program.Link(comp);
// _tVerts = Buffer<Vector4>.FromData(new[]
// {
// new Vector4(-.5f - 1, -.5f, -.5f, 1),
// new Vector4(+.5f - 1, +.5f, -.5f, 1),
// new Vector4(+.5f - 1, -.5f, +.5f, 1),
// new Vector4(-.5f - 1, +.5f, +.5f, 1),
//
// new Vector4(-.5f + 1, -.5f, -.5f, 1),
// new Vector4(+.5f + 1, +.5f, -.5f, 1),
// new Vector4(+.5f + 1, -.5f, +.5f, 1),
// new Vector4(-.5f + 1, +.5f, +.5f, 1),
// });
//
// _tInds = Buffer<uint>.FromData(new uint[]
// {
// 0, 1, 2, 3,
// 4, 5, 6, 7,
// 0, 1, 6, 7,
// });
GenSphere(20);
_tVerts = Buffer<Vector4>.FromData(new[]
{
new Vector4(-1, -1, -1, 1),
new Vector4(-1, -1, +1, 1),
new Vector4(-1, +1, -1, 1),
new Vector4(-1, +1, +1, 1),
new Vector4(+1, -1, -1, 1),
new Vector4(+1, -1, +1, 1),
new Vector4(+1, +1, -1, 1),
new Vector4(+1, +1, +1, 1),
});
_pVerts = new Buffer<Vector4>(_tCount * 4);
_pEdges = new Buffer<uint>(_tCount * 8);
_pFaces = new Buffer<uint>(_tCount * 6);
_tInds = Buffer<uint>.FromData(new uint[]
{
0, 3, 5, 6,
0, 3, 2, 6,
0, 3, 1, 5,
3, 7, 5, 6,
0, 4, 5, 6,
});
_tetraCount = _tInds.Count / 4;
_pVerts = new Buffer<Vector4>(_tetraCount * 4);
_pEdges = new Buffer<uint>(_tetraCount * 8);
_pFaces = new Buffer<uint>(_tetraCount * 6);
_tEdges = new Buffer<uint>(_tetraCount * 12);
_tFaces = new Buffer<uint>(_tetraCount * 12);
_tEdges = new Buffer<uint>(_tCount * 12);
_tFaces = new Buffer<uint>(_tCount * 12);
_viewBuf = new Buffer<ViewMats>();
_view = ViewMats.Identity;
@@ -150,11 +164,14 @@ namespace Platformer
GL.UseProgram(_render);
GL.BindVertexArray(_tetraVao);
GL.Disable(EnableCap.DepthTest);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, _tFaces);
GL.Uniform3(_render.UnifLoc("color"), 1f, 1, 1);
GL.DrawElements(BeginMode.Triangles, _tEdges.Count, DrawElementsType.UnsignedInt, 0);
if (_tetra)
{
GL.BindVertexArray(_tetraVao);
GL.Disable(EnableCap.DepthTest);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, _tFaces);
GL.Uniform3(_render.UnifLoc("color"), 1f, 1, 1);
GL.DrawElements(BeginMode.Triangles, _tEdges.Count, DrawElementsType.UnsignedInt, 0);
}
GL.BindVertexArray(_polyVao);
GL.Enable(EnableCap.DepthTest);
@@ -162,19 +179,24 @@ namespace Platformer
GL.Uniform3(_render.UnifLoc("color"), .8f, .8f, .9f);
GL.DrawElements(BeginMode.Triangles, _pFaces.Count, DrawElementsType.UnsignedInt, 0);
GL.BindVertexArray(_polyVao);
GL.Disable(EnableCap.DepthTest);
GL.LineWidth(5f);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, _pEdges);
GL.Uniform3(_render.UnifLoc("color"), .1f, .1f, .6f);
GL.DrawElements(BeginMode.Lines, _pEdges.Count, DrawElementsType.UnsignedInt, 0);
if (_pOutline)
{
GL.BindVertexArray(_polyVao);
GL.Disable(EnableCap.DepthTest);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, _pEdges);
GL.Uniform3(_render.UnifLoc("color"), .1f, .1f, .6f);
GL.DrawElements(BeginMode.Lines, _pEdges.Count, DrawElementsType.UnsignedInt, 0);
}
GL.BindVertexArray(_tetraVao);
GL.Enable(EnableCap.DepthTest);
GL.LineWidth(2f);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, _tEdges);
GL.Uniform3(_render.UnifLoc("color"), 0f, 0, 0);
GL.DrawElements(BeginMode.Lines, _tEdges.Count, DrawElementsType.UnsignedInt, 0);
if (_tOutline)
{
GL.BindVertexArray(_tetraVao);
GL.Enable(EnableCap.DepthTest);
GL.LineWidth(2f);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, _tEdges);
GL.Uniform3(_render.UnifLoc("color"), 0f, 0, 0);
GL.DrawElements(BeginMode.Lines, _tEdges.Count, DrawElementsType.UnsignedInt, 0);
}
GL.Flush();
@@ -184,20 +206,43 @@ namespace Platformer
protected override void OnUpdateFrame(FrameEventArgs e)
{
base.OnUpdateFrame(e);
var dt = (float) e.Time;
_time += dt;
var dv = Matrix4.Identity;
if (Keyboard[Key.A]) dv *= Matrix4.CreateRotationZ((float) e.Time);
if (Keyboard[Key.D]) dv *= Matrix4.CreateRotationZ(-(float) e.Time);
if (Keyboard[Key.LControl])
dt /= 4;
if (Keyboard[Key.W]) dv *= Matrix4.CreateRotationY((float) e.Time);
if (Keyboard[Key.S]) dv *= Matrix4.CreateRotationY(-(float) e.Time);
if (Keyboard[Key.LShift])
{
if (Keyboard[Key.Left]) dv *= Matrix4.CreateRotationZ(dt);
if (Keyboard[Key.Right]) dv *= Matrix4.CreateRotationZ(-dt);
if (Keyboard[Key.Up]) dv *= Matrix4.CreateRotationY(dt);
if (Keyboard[Key.Down]) dv *= Matrix4.CreateRotationY(-dt);
}
else
{
if (Keyboard[Key.Left]) dv *= Matrix4.CreateRotationZ(dt);
if (Keyboard[Key.Right]) dv *= Matrix4.CreateRotationZ(-dt);
if (Keyboard[Key.Up]) dv *= Matrix4.CreateTranslation(-dt, 0, 0);
if (Keyboard[Key.Down]) dv *= Matrix4.CreateTranslation(dt, 0, 0);
}
_tform.Tform *= dv;
_view.Proj = Matrix4.CreateOrthographic(5, 5f * Height / Width, -2.5f, 2.5f);
// _view.View = Matrix4.LookAt(Vector3.Zero, -Vector3.One, Vector3.UnitZ);
_view.View = Matrix4.LookAt(Vector3.Zero, Vector3.UnitX, Vector3.UnitZ);
// _tform.Tform *= Matrix4.CreateRotationZ((float) e.Time) * Matrix4.CreateRotationX((float) e.Time / 1.7f);
_view.Model = _tform.Tform *= dv;
if (_flat)
{
_view.View = Matrix4.LookAt(Vector3.Zero, Vector3.UnitX, Vector3.UnitZ);
_view.Model = _tform.Tform;
}
else
{
_view.View = Matrix4.LookAt(Vector3.Zero, -Vector3.One, Vector3.UnitZ);
_view.Model = Matrix4.Identity;
}
_viewBuf.SetData(ref _view);
_tformBuf.SetData(ref _tform);
@@ -214,7 +259,28 @@ namespace Platformer
GL.BindBufferBase(BufferRangeTarget.ShaderStorageBuffer, 5, _tEdges);
GL.BindBufferBase(BufferRangeTarget.ShaderStorageBuffer, 6, _tFaces);
GL.DispatchCompute(_tetraCount, 1, 1);
GL.DispatchCompute(_tCount, 1, 1);
}
protected override void OnKeyDown(KeyboardKeyEventArgs e)
{
base.OnKeyDown(e);
switch (e.Key)
{
case Key.A:
_flat = !_flat;
break;
case Key.S:
_tetra = !_tetra;
break;
case Key.D:
_pOutline = !_pOutline;
break;
case Key.F:
_tOutline = !_tOutline;
break;
}
}
}
}