protected override void OnLoad(EventArgs e)
{
GL.Enable(EnableCap.Texture2D);
GL.Enable(EnableCap.CullFace);
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
//solid = new Cube();
var data = new List<OpenGLVertex>
{
new OpenGLVertex {Position = new Vector3(-1, -1, 0), Colour =new Color4(0.118f, 0.118f, 0.118f, 1f).ToVector4()},//bottom left
new OpenGLVertex {Position = new Vector3(1, -1, 0), Colour= new Color4(0.118f, 0.118f, 0.118f, 1f).ToVector4() }, //bottom right
new OpenGLVertex {Position = new Vector3(1, 1, 0), Colour = new Color4(0.176f, 0.176f, 0.188f, 1f).ToVector4() },//top right
new OpenGLVertex {Position = new Vector3(-1, 1, 0), Colour = new Color4(0.176f, 0.176f, 0.188f, 1f).ToVector4()},//top left
};
_ubo = new CameraUBO();
_shader = new FlatShaderProgram();
_basicShader = new BasicShaderProgram(_ubo);
_vbo = new VBO(data) { BeginMode = BeginMode.Quads };
_vao = new VAO(_shader, _vbo);
var dotdata = new List<OpenGLVertex>
{
new OpenGLVertex {Position = new Vector3(0, 0, 0)},
new OpenGLVertex {Position = new Vector3(10, 10, 0)},
};
_dotsvbo = new VBO(dotdata) { BeginMode = BeginMode.Lines };
_dotsvao = new VAO(_basicShader, _dotsvbo);
var stl = new STL("rounded_cube.stl", Color.GreenYellow);
var cubedata = new List<OpenGLVertex>();
var col = stl.Color.ToVector4();
foreach (var ele in stl.Elements)
{
cubedata.Add(new OpenGLVertex { Position = ele.P1.ToVector3(), Normal = ele.Normal.ToVector3(), Colour = col });
cubedata.Add(new OpenGLVertex { Position = ele.P2.ToVector3(), Normal = ele.Normal.ToVector3(), Colour = col });
cubedata.Add(new OpenGLVertex { Position = ele.P3.ToVector3(), Normal = ele.Normal.ToVector3(), Colour = col });
}
_geovbo = new VBO(cubedata) { BeginMode = BeginMode.Triangles };
_geovao = new VAO(_basicShader, _geovbo);
var err = GL.GetError();
if (err != ErrorCode.NoError)
Console.WriteLine("Error at OnLoad: " + err);
}
public VAO(IShaderProgram program, VBO vbo)
{
_program = program;
VBO = vbo;
GL.GenVertexArrays(1, out _handle);
using (new Bind(program))
using (new Bind(this))
using (new Bind(vbo))
{
var stride = Vector3.SizeInBytes * 2 + Vector4.SizeInBytes;
GL.EnableVertexAttribArray(0);
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, true, stride, 0);
GL.BindAttribLocation(program.Handle, 0, "vert_position");
GL.EnableVertexAttribArray(1);
GL.VertexAttribPointer(1, 3, VertexAttribPointerType.Float, true, stride, Vector3.SizeInBytes);
GL.BindAttribLocation(program.Handle, 1, "vert_normal");
GL.EnableVertexAttribArray(2);
GL.VertexAttribPointer(2, 4, VertexAttribPointerType.Float, false, stride, Vector3.SizeInBytes * 2);
GL.BindAttribLocation(program.Handle, 2, "vert_colour");
}
}