public Area(float x, float y, float width, float height)
{
//conver 0 - 1 to (-1) - 1
x = 2 * x - 1;
y = -2 * y + 1;
width *= 2f;
height *= 2f;
Vector2[] verts = new Vector2[]
{
new Vector2(x, y),
new Vector2(x, y - height),
new Vector2(x + width, y),
new Vector2(x + width, y - height),
};
Vector2[] uvs = new Vector2[]
{
new Vector2(0, 1),
new Vector2(0, 0),
new Vector2(1, 1),
new Vector2(1, 0)
};
Vao = new VAO(verts);
Vao.addAttributeArray(uvs, 2, 1);
}
public SkyBox(string directory, string ext = ".png")
{
Texture = new TextureCube(directory, ext);
Vector3[] positions = new Vector3[]
{
new Vector3(1.0f, -1.0f, -1.0f),
new Vector3(1.0f, -1.0f, 1.0f),
new Vector3(-1.0f, -1.0f, 1.0f),
new Vector3(-1.0f, -1.0f, -1.0f),
new Vector3(1.0f, 1.0f, -1.0f),
new Vector3(1.0f, 1.0f, 1.0f),
new Vector3(-1.0f, 1.0f, 1.0f),
new Vector3(-1.0f, 1.0f, -1.0f)
};
uint[] elements = new uint[]
{
0, 1, 2, 3,
4, 7, 6, 5,
0, 4, 5, 1,
1, 5, 6, 2,
2, 6, 7, 3,
4, 0, 3, 7
};
Vao = new VAO(positions);
Vao.addElementArray(elements);
Shader = Shaders.SkyboxShader();
}
public Model(VAO _vao, Texture t)
{
this.Vao = _vao;
this.Texture = t;
this.Transform = Matrix4.Identity;
this.pickColor = new Vector3(1, 0, 0);
}
public Model(VAO _vao, Texture t, ShaderProgram defaultShader)
{
this.Shader = defaultShader;
this.Vao = _vao;
this.Texture = t;
this.Position = new Vector3(0);
this.Transform = Matrix4.Identity;
this.Rotation = Matrix4.Identity;
this.Scale = 1f;
this.createTransform();
this.pickColor = new Vector3(1, 0, 0);
}
public Billboard(ShaderProgram program, Texture texture, Vector3[] locations, Vector3[] colors)
{
this.Program = program;
this.Texture = texture;
int[] elements = new int[locations.Length];
for (int i = 0; i < elements.Length; i++)
{
elements[i] = i;
}
this.billboard = new VAO(program, new VBO <Vector3>(locations), new VBO <Vector3>(colors), new VBO <int>(elements));
this.billboard.DrawMode = BeginMode.Points;
this.billboard.DisposeChildren = true;
this.Color = new Vector4(1, 1, 1, 1);
}
public Billboard(Material program, Texture texture, Vector3[] locations, Vector3[] colors)
{
Program = program;
Texture = texture;
uint[] elements = new uint[locations.Length];
for (uint i = 0; i < elements.Length; i++)
{
elements[i] = i;
}
billboard = new VAO(program, new VBO <Vector3>(locations), new VBO <Vector3>(colors), new VBO <uint>(elements))
{
DrawMode = BeginMode.Points,
DisposeChildren = true
};
Color = new Vector4(1, 1, 1, 1);
}
public static VAO LoadAsVAO(string path)
{
List <Vector3> positions = new List <Vector3>();
List <Vector2> uvs = new List <Vector2>();
List <Vector3> normals = new List <Vector3>();
List <VertexData> verts = new List <VertexData>();
hasUvs = false;
hasNormals = false;
if (!File.Exists(path))
{
throw new FileNotFoundException();
}
string[] lines = File.ReadAllLines(path);
foreach (string str in lines)
{
if (!string.IsNullOrWhiteSpace(str) && str.Length > 2)
{
switch (str.Substring(0, 2))
{
case "v ":
parseVert(str, positions);
break;
case "vt":
parseTexture(str, uvs);
break;
case "vn":
parseNormal(str, normals);
break;
case "f ":
parseFace(str, positions, uvs, normals, verts);
break;
}
}
}
Console.WriteLine("Loaded file {0}, with {1} with vertices", path, verts.Count);
List <Vector3> p = new List <Vector3>();
List <Vector2> u = new List <Vector2>();
List <Vector3> n = new List <Vector3>();
uint[] e = new uint[verts.Count];
Dictionary <VertexData, int> vertices = new Dictionary <VertexData, int>();
Stopwatch watch = new Stopwatch();
watch.Start();
for (int i = 0; i < verts.Count; i++)
{
if (!vertices.ContainsKey(verts[i]))
{
p.Add(verts[i].position);
u.Add(verts[i].uv);
n.Add(verts[i].normal);
e[i] = (uint)p.Count - 1;
vertices.Add(verts[i], vertices.Count);
}
else
{
e[i] = (uint)vertices[verts[i]];
}
}
watch.Stop();
Console.WriteLine(watch.ElapsedMilliseconds);
VAO vao = new VAO(p.ToArray());
if (hasUvs)
{
vao.addAttributeArray(u.ToArray(), 2, 1);
}
if (hasNormals)
{
vao.addAttributeArray(n.ToArray(), 3, 2);
}
vao.addElementArray(e);
return(vao);
}