private void Start_Click(object sender, RoutedEventArgs e)
{
try
{
SetControlsEnabled(false);
_zoom = 5;
_screenWidth = Image.Width;
_screenHeight = Image.Height;
var dpiScale = VisualTreeHelper.GetDpi(this);
_pixelsPerInchX = dpiScale.PixelsPerInchX;
_pixelsPerInchY = dpiScale.PixelsPerInchY;
var textureIndex = int.Parse(TextureIndex.Text);
var options = new TriangleOptions()
{
SingleColor = bool.Parse(SingleColor.Text),
PerformBackfaceCulling = bool.Parse(PerformBackfaceCulling.Text),
DiffuseLambert = bool.Parse(DiffuseLambert.Text),
SpecularPhong = bool.Parse(SpecularPhong.Text),
SpecularPhongFactor = float.Parse(SpecularPhongFactor.Text),
Texture = textureIndex >= 0 ? _textures[textureIndex] : null,
BilinearFilter = bool.Parse(BilinearFilter.Text),
GammaCorrect = bool.Parse(GammaCorrect.Text)
};
var triangles = GetTriangles((int)_screenWidth, (int)_screenHeight, options);
var lightSources = new LightSource[]
{
new LightSource("w", new Vector3(0.5f, 0.5f, -5), Colors.White)
};
_scene = new SceneB((int)_screenWidth, (int)_screenHeight, _pixelsPerInchX, _pixelsPerInchY, triangles, lightSources, bool.Parse(GammaCorrect.Text), bool.Parse(ZBuffer.Text), bool.Parse(DeferredRender.Text));
_isRunning = true;
CompositionTarget.Rendering += CompositionTarget_Rendering;
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
SetControlsEnabled(true);
}
}
private Triangle[] GetTriangles(int screenWidth, int screenHeight, TriangleOptions options)
{
var triangles = new List <Triangle>();
var points = new Vector3[]
{
new Vector3(-1, -1, -1),
new Vector3(+1, -1, -1),
new Vector3(+1, +1, -1),
new Vector3(-1, +1, -1),
new Vector3(-1, -1, +1),
new Vector3(+1, -1, +1),
new Vector3(+1, +1, +1),
new Vector3(-1, +1, +1)
};
var triangleIdx = new List <(int, int, int, int, int, int, int)>
{
(0, 1, 2, 2, 3, 1, 0), // top
(0, 2, 3, 2, 3, 0, 2),
(7, 6, 5, 3, 3, 1, 0), // bottom
(7, 5, 4, 3, 3, 0, 2),
(0, 3, 7, 0, 3, 1, 0), // left
(0, 7, 4, 0, 3, 0, 2),
(2, 1, 5, 1, 3, 1, 0), // right
(2, 5, 6, 1, 3, 0, 2),
(3, 2, 6, 4, 3, 1, 0), // front
(3, 6, 7, 4, 3, 0, 2),
(1, 0, 4, 5, 3, 1, 0), // back
(1, 4, 5, 5, 3, 0, 2)
};
var colors = new Vector3[]
{
new Vector3(1, 0, 0), // red
new Vector3(0, 1, 0), // green
new Vector3(0, 0, 1) // blue
};
var normals = new Vector3[]
{
-Vector3.UnitX,
Vector3.UnitX,
-Vector3.UnitY,
Vector3.UnitY,
-Vector3.UnitZ,
Vector3.UnitZ
};
var textureCoordinates = new Vector2[]
{
new Vector2(1, 0),
new Vector2(1, 1),
new Vector2(0, 0),
new Vector2(0, 1)
};
var random = new Random();
foreach (var t in triangleIdx)
{
var n = normals[t.Item4];
bool hasTexture = options.Texture != null;
var t1 = Vector2.Zero;
if (hasTexture)
{
t1 = textureCoordinates[t.Item5];
t1 = new Vector2(t1.X * options.Texture.Width, t1.Y * options.Texture.Height);
}
var v1 = new Vertex(points[t.Item1], colors[random.Next(0, colors.Length)], screenWidth, screenHeight, t1);
var t2 = Vector2.Zero;
if (hasTexture)
{
t2 = textureCoordinates[t.Item6];
t2 = new Vector2(t2.X * options.Texture.Width, t2.Y * options.Texture.Height);
}
var v2 = new Vertex(points[t.Item2], colors[random.Next(0, colors.Length)], screenWidth, screenHeight, t2);
var t3 = Vector2.Zero;
if (hasTexture)
{
t3 = textureCoordinates[t.Item7];
t3 = new Vector2(t3.X * options.Texture.Width, t3.Y * options.Texture.Height);
}
var v3 = new Vertex(points[t.Item3], colors[random.Next(0, colors.Length)], screenWidth, screenHeight, t3);
triangles.Add(new Triangle(v1, v2, v3, options));
}
return(triangles.ToArray());
}
