/// <summary>
/// Creates vertex data based on the file provided. Sets up VBO and VAO.
/// Throws exceptions if the file cannot be loaded or the VBO cannot be
/// created. Finds the bounds of the figure. Sets the figures
/// coordinates to it's "restore" position.
/// </summary>
public void Load()
{
VertexDataList vdl = new VertexDataList();
bool correctFile = vdl.LoadDataFromVRML(fileString);
if (!correctFile)
throw new Exception("Could not load data from file.");
verts = vdl.VertexArray();
GL.GenBuffers(1, out vboHandle);
GL.BindBuffer(BufferTarget.ArrayBuffer, vboHandle);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(verts.Length * BlittableValueType.StrideOf(verts)), verts, BufferUsageHint.StaticDraw);
int size;
GL.GetBufferParameter(BufferTarget.ArrayBuffer, BufferParameterName.BufferSize, out size);
if (verts.Length * BlittableValueType.StrideOf(verts) != size)
throw new Exception("VBO creation failed.");
GL.GenVertexArrays(1, out vaoHandle);
GL.BindVertexArray(vaoHandle);
int vertColorLoc = GL.GetAttribLocation(ShaderLoader.Instance.ProgramHandle, "VertexColor");
GL.EnableVertexAttribArray(vertColorLoc);
GL.VertexAttribPointer(vertColorLoc, 3, VertexAttribPointerType.Float, true, 36, 12);
int vertPosLoc = GL.GetAttribLocation(ShaderLoader.Instance.ProgramHandle, "VertexPosition");
GL.EnableVertexAttribArray(vertPosLoc);
GL.VertexAttribPointer(vertPosLoc, 3, VertexAttribPointerType.Float, true, 36, 0);
int vertNormLoc = GL.GetAttribLocation(ShaderLoader.Instance.ProgramHandle, "VertexNormal");
GL.EnableVertexAttribArray(vertNormLoc);
GL.VertexAttribPointer(vertNormLoc, 3, VertexAttribPointerType.Float, true, 36, 24);
GL.BindVertexArray(0);
FindBounds();
Restore();
}
