private Dictionary <IVertexArrayObject, int> PrepareVAOs(IEnumerable <Entity> entities)
{
Dictionary <IVertexArrayObject, int> simulatorVAOs = new Dictionary <IVertexArrayObject, int>();
Dictionary <Enums.EntityType, IVertexArrayObject> simVAOs = new Dictionary <Enums.EntityType, IVertexArrayObject>();
Dictionary <Enums.EntityType, List <Matrix4x4> > transformations = new Dictionary <Enums.EntityType, List <Matrix4x4> >();
Dictionary <Enums.EntityType, List <Vector4> > colors = new Dictionary <Enums.EntityType, List <Vector4> >();
Dictionary <Enums.EntityType, int> instanceCounts = new Dictionary <Enums.EntityType, int>();
foreach (var entity in entities)
{
if (!simVAOs.ContainsKey(entity.Type))
{
Mesh mesh = null;
switch (entity.Type)
{
case Enums.EntityType.Triangle:
mesh = MeshCreator.CreateTriangle();
break;
case Enums.EntityType.Tetrahedron:
mesh = MeshCreator.CreateteTrahedron();
break;
}
if (mesh != null)
{
switch (_wrapper)
{
case RenderSimulator _:
simVAOs.Add(entity.Type, VAOLoader.FromMesh <SimulatorVAO>(mesh, new Tuple <VertexShader, FragmentShader>(_vertex, _fragment), new object[] { _wrapper }));
break;
case RenderTranslator _:
simVAOs.Add(entity.Type, VAOLoader.FromMesh <TranslatorVAO>(mesh, new Tuple <VertexShader, FragmentShader>(_vertex, _fragment), new object[] { _wrapper }));
break;
}
transformations.Add(entity.Type, new List <Matrix4x4>());
colors.Add(entity.Type, new List <Vector4>());
instanceCounts.Add(entity.Type, 0);
}
}
if (transformations.ContainsKey(entity.Type))
{
transformations[entity.Type].Add(entity.Transformation);
colors[entity.Type].Add(entity.Color);
instanceCounts[entity.Type]++;
}
}
foreach (var key in simVAOs.Keys)
{
simVAOs[key].SetAttribute("InstanceTransformation", new Tuple <VertexShader, FragmentShader>(_vertex, _fragment), transformations[key], true);
simVAOs[key].SetAttribute("Color", new Tuple <VertexShader, FragmentShader>(_vertex, _fragment), colors[key], true);
simulatorVAOs.Add(simVAOs[key], instanceCounts[key]);
}
return(simulatorVAOs);
}