private static VAO CreateMesh(Shader shader)
{
Mesh mesh = Obj2Mesh.FromObj(Resourcen.suzanne);
var vao = new VAO();
vao.SetAttribute(shader.GetAttributeLocation("position"), mesh.positions.ToArray(), VertexAttribPointerType.Float, 3);
vao.SetAttribute(shader.GetAttributeLocation("normal"), mesh.normals.ToArray(), VertexAttribPointerType.Float, 3);
vao.SetID(mesh.ids.ToArray(), PrimitiveType.Triangles);
return vao;
}
private static VAO CreateMesh(Shader shader)
{
Mesh mesh = Meshes.CreateSphere(0.03f, 2);
var vao = new VAO();
vao.SetAttribute(shader.GetAttributeLocation("position"), mesh.positions.ToArray(), VertexAttribPointerType.Float, 3);
vao.SetAttribute(shader.GetAttributeLocation("normal"), mesh.normals.ToArray(), VertexAttribPointerType.Float, 3);
vao.SetID(mesh.ids.ToArray(), PrimitiveType.Triangles);
return vao;
}
public MainVisual()
{
var sVertex = Encoding.UTF8.GetString(Resourcen.vertex);
var sFragment = Encoding.UTF8.GetString(Resourcen.fragment);
shader = ShaderLoader.FromStrings(sVertex, sFragment);
//load geometry
Mesh mesh = Obj2Mesh.FromObj(Resourcen.suzanne);
geometry.SetAttribute(shader.GetAttributeLocation("position"), mesh.positions.ToArray(), VertexAttribPointerType.Float, 3);
geometry.SetAttribute(shader.GetAttributeLocation("normal"), mesh.normals.ToArray(), VertexAttribPointerType.Float, 3);
//geometry.SetAttribute(shader.GetAttributeLocation("uv"), mesh.uvs.ToArray(), VertexAttribPointerType.Float, 2);
geometry.SetID(mesh.ids.ToArray(), PrimitiveType.Triangles);
GL.PolygonMode(MaterialFace.FrontAndBack, PolygonMode.Line); //draw wireframe
//GL.Enable(EnableCap.DepthTest);
//texDiffuse = TextureLoader.FromFile(pathMedia + "capsule0.jpg");
}
public VisualPlane()
{
var sVertex = Encoding.UTF8.GetString(Resourcen.plane_vert);
var sFragment = Encoding.UTF8.GetString(Resourcen.plane_frag);
shdPlane = ShaderLoader.FromStrings(sVertex, sFragment);
var mesh = Meshes.CreatePlane(2, 2, 1, 1);
plane.SetAttribute(shdPlane.GetAttributeLocation("position"), mesh.positions.ToArray(), VertexAttribPointerType.Float, 3);
plane.SetID(mesh.ids.ToArray(), PrimitiveType.Triangles);
}
private static void CreatePerInstanceAttributes(VAO vao, Shader shader)
{
//per instance attributes
var rnd = new Random(12);
Func<float> Rnd01 = () => (float)rnd.NextDouble();
Func<float> RndCoord = () => (Rnd01() - 0.5f) * 2.0f;
var instancePositions = new Vector3[particelCount];
for (int i = 0; i < particelCount; ++i)
{
instancePositions[i] = new Vector3(RndCoord(), RndCoord(), RndCoord());
}
vao.SetAttribute(shader.GetAttributeLocation("instancePosition"), instancePositions, VertexAttribPointerType.Float, 3, true);
//todo: students: add per instance attribute speed here
//var locInstSpeed = shader.GetAttributeLocation("instanceSpeed");
}