static void Main(string[] args)
{
var mediaPath = Path.GetFullPath("../../../../../js/r68/examples/");
var texturesPath = Path.Combine(mediaPath, "textures");
var renderer = new Renderer();
var scene = new Scene()
{
//Fog = new FogExp2(Color.Blue, 0.24f)
};
var camera = new OrthographicCamera(renderer, -1000, 1000)
{
Position = new Vector3(0, 0, 2)
};
//// create a point light
scene.Add(new DirectionalLight(Color.White)
{
Target = Vector3.UnitX
});
var geometry = new BoxGeometry(20, 20, 20);
for (var i = 0; i < 2000; i++)
{
var o = new Mesh(geometry, new MeshLambertMaterial(renderer) { Diffuse = Color.Random() });
o.Position = new Vector3(Mathf.RandomF(-400, 400), Mathf.RandomF(-400, 400), Mathf.RandomF(-400, 400));
o.Rotation = new Euler(Mathf.Tau * Mathf.RandomF(), Mathf.Tau * Mathf.RandomF(), Mathf.Tau * Mathf.RandomF());
o.Scale = new Vector3(Mathf.RandomF(0.5f, 1.5f), Mathf.RandomF(0.5f, 1.5f), Mathf.RandomF(0.5f, 1.5f));
scene.Add(o);
}
var raycaster = new Raycaster();
Object3D INTERSECTED = null;
Color previousColor = Color.White;
var radius = 100;
var previousTime = 0f;
var stopwatch = Stopwatch.StartNew();
while (!renderer.Done)
{
var now = (float)stopwatch.Elapsed.TotalSeconds;
var deltaTime = now - previousTime;
previousTime = now;
var offset = now / 4;
var sin = Mathf.Sin(offset) * radius;
var cos = Mathf.Cos(offset) * radius;
camera.Position = new Vector3(sin, sin, cos);
camera.LookAt(Vector3.Zero);
#region FindIntersections
var vector = Projector.UnprojectVector(new Vector3(renderer.MousePositionNormalized,-1),camera.projectionMatrix, camera.matrixWorld);
var direction = new Vector3(0, 0, -1);
direction.TransformDirection(camera.matrixWorld);
raycaster.Set(vector, direction);
var intersects = raycaster.IntersectObjects(scene.Children);
if (intersects != null && intersects.Count > 0)
{
var first = intersects[0];
if (INTERSECTED != first.Object)
{
if (INTERSECTED != null)
{
var basic = INTERSECTED.Material as MeshLambertMaterial;
basic.Emissive = previousColor;
}
var firstMat = first.Object.Material as MeshLambertMaterial;
INTERSECTED = first.Object;
previousColor = firstMat.Emissive;
firstMat.Emissive = Color.Red;
}
}
else
{
if (INTERSECTED != null)
{
(INTERSECTED.Material as MeshLambertMaterial).Emissive = previousColor;
}
INTERSECTED = null;
}
#endregion
renderer.RenderFrame(scene, camera);
}
}
public static Object3D Parse(Renderer renderer, string path, Action<string> mtllibCallback = null)
{
ObjMtlLoader.renderer = renderer;
var text = File.ReadAllText(path);
var vector = new Func<string, string, string, Vector3>((x, y, z) =>
{
var vx = Convert.ToSingle(x);
var vy = Convert.ToSingle(y);
var vz = Convert.ToSingle(z);
return new Vector3(vx, vy, vz);
});
var uv = new Func<string, string, Vector2>((u, v) =>
{
var vu = Convert.ToSingle(u);
var vv = Convert.ToSingle(v);
return new Vector2(vu, vv);
});
var parseVertexIndex = new Func<string, int>((indexString) =>
{
var index = Convert.ToInt32(indexString);
return index >= 0 ? index - 1 : index + vertexIndicies.Count;
});
var parseNormalIndex = new Func<string, int>((indexString) =>
{
var index = Convert.ToInt32(indexString);
return index >= 0 ? index - 1 : index + normals.Count;
});
var parseUVIndex = new Func<string, int>((indexString) =>
{
var index = Convert.ToInt32(indexString);
return index >= 0 ? index - 1 : index + uvs2.Count;
});
var add_face = new Action<string, string, string, List<string>>((a, b, c, normals_inds) =>
{
if (normals_inds == null)
{
geometry.faces.Add(new Face3(
vertexIndicies[parseVertexIndex(a)] - 1,
vertexIndicies[parseVertexIndex(b)] - 1,
vertexIndicies[parseVertexIndex(c)] - 1
));
}
else
{
geometry.faces.Add(new Face3(
vertexIndicies[parseVertexIndex(a)] - 1,
vertexIndicies[parseVertexIndex(b)] - 1,
vertexIndicies[parseVertexIndex(c)] - 1,
normals[parseNormalIndex(normals_inds[0])],
normals[parseNormalIndex(normals_inds[1])],
normals[parseNormalIndex(normals_inds[2])]));
}
});
var add_uvs = new Action<string, string, string>((a, b, c) =>
{
geometry.faceVertexUvs[0].Add(new UVFaceSet(uvs2[parseUVIndex(a)], uvs2[parseUVIndex(b)], uvs2[parseUVIndex(c)]));
});
var handle_face_line = new Action<List<string>, List<string>, List<string>>((faces, uvs, normals_inds) =>
{
if (faces.Count == 3)
{
add_face(faces[0], faces[1], faces[2], normals_inds);
if (uvs != null && uvs.Count > 0)
{
add_uvs(uvs[0], uvs[1], uvs[2]);
}
}
else
{
if (normals_inds != null && normals_inds.Count > 0)
{
add_face(faces[0], faces[1], faces[3], new List<string>() { normals_inds[0], normals_inds[1], normals_inds[3] });
add_face(faces[1], faces[2], faces[3], new List<string>() { normals_inds[1], normals_inds[2], normals_inds[3] });
}
else
{
add_face(faces[0], faces[1], faces[3], null);
add_face(faces[1], faces[2], faces[3], null);
}
if (uvs != null && uvs.Count > 0)
{
add_uvs(uvs[0], uvs[1], uvs[3]);
add_uvs(uvs[1], uvs[2], uvs[3]);
}
}
});
var o = new Object3D();
var lines = text.Split('\n');
// create mesh if no objects in text
if (lines.Where(l => l.StartsWith("o")).Count() == 0)
{
geometry = new Geometry();
material = new MeshBasicMaterial(renderer);
mesh = new Mesh(geometry, material);
o.Add(mesh);
}
vertexIndicies = new List<int>();
normals = new List<Vector3>();
uvs2 = new List<Vector2>();
// fixes
//text = text.Replace("\r\n",string.Empty); // handles line continuations \
foreach (var l in lines)
{
if (l.Length == 0 || l[0] == '#') continue;
var line = l.Trim();
var result = line.Split(' ','/');
if (vertex_pattern.IsMatch(line))
{
// ["v 1.0 2.0 3.0", "1.0", "2.0", "3.0"]
geometry.vertices.Add(
vector(
result[1], result[2], result[3]
)
);
vertexIndicies.Add(geometry.vertices.Count);
}
else if (normal_pattern.IsMatch(line))
{
// ["vn 1.0 2.0 3.0", "1.0", "2.0", "3.0"]
normals.Add(vector(result[1], result[2], result[3]));
}
else if (uv_pattern.IsMatch(line))
{
// ["vt 0.1 0.2", "0.1", "0.2"]
uvs2.Add(
uv(
result[1], result[2]
)
);
}
else if (face_pattern1.IsMatch(line))
{
// ["f 1 2 3", "1", "2", "3", undefined]WDEAADEAWAAAADD
if (result.Length == 4)
{
handle_face_line(new List<string>() { result[1], result[2], result[3] }, null, null);
}
else
{
handle_face_line(new List<string>() { result[1], result[2], result[3], result[4] }, null, null);
}
}
else if (face_pattern2.IsMatch(line))
{
// ["f 1/1 2/2 3/3", " 1/1", "1", "1", " 2/2", "2", "2", " 3/3", "3", "3", undefined, undefined, undefined]
if (result.Length == 7)
{
handle_face_line(
new List<string>() { result[1], result[3], result[5] }, //faces
new List<string>() { result[2], result[4], result[6] }, //uv
null
);
}
else
{
handle_face_line(
new List<string>() { result[1], result[3], result[5], result[7] }, //faces
new List<string>() { result[2], result[4], result[6], result[8] }, //uv
null
);
}
}
else if (face_pattern3.IsMatch(line))
{
if (result.Length == 10)
{
handle_face_line(
new List<string>() { result[1], result[4], result[7], }, //faces
new List<string>() { result[2], result[5], result[8], }, //uv
new List<string>() { result[3], result[6], result[9], } //normal
);
}
else
{
// ["f 1/1/1 2/2/2 3/3/3", " 1/1/1", "1", "1", "1", " 2/2/2", "2", "2", "2", " 3/3/3", "3", "3", "3", undefined, undefined, undefined, undefined]
handle_face_line(
new List<string>() { result[1], result[4], result[7], result[10] }, //faces
new List<string>() { result[2], result[5], result[8], result[11] }, //uv
new List<string>() { result[3], result[6], result[9], result[12] } //normal
);
}
}
else if (face_pattern4.IsMatch(line))
{
if (result.Length == 10)
{
// ["f 1//1 2//2 3//3", " 1//1", "1", "1", " 2//2", "2", "2", " 3//3", "3", "3", undefined, undefined, undefined]
handle_face_line(
new List<string>() { result[1], result[4], result[7] }, //faces
null, //uv
new List<string>() { result[3], result[6], result[9] } //normal
);
}
else
{
// ["f 1//1 2//2 3//3", " 1//1", "1", "1", " 2//2", "2", "2", " 3//3", "3", "3", undefined, undefined, undefined]
handle_face_line(
new List<string>() { result[1], result[4], result[7], result[10] }, //faces
null, //uv
new List<string>() { result[3], result[6], result[9], result[12] } //normal
);
}
}
else if (objectTest.IsMatch(line))
{
geometry = new Geometry();
material = new MeshBasicMaterial(renderer);
mesh = new Mesh(geometry, material);
mesh.Name = line.Substring(2).Trim();
o.Add(mesh);
}
else if (groupTest.IsMatch(line))
{
// group
}
else if (useMTLTest.IsMatch(line))
{
// material
material = materials[result[1].Trim()];
mesh.Material = material;
}
else if (mtlTest.IsMatch(line))
{
// mtl file
var objPath = Path.GetDirectoryName(path);
var fullPath = Path.Combine(objPath, result[1].Trim());
ParseMaterials(fullPath);
}
else if (smoothShadingTest.IsMatch(line))
{
// smooth shading
}
else
{
throw new NotSupportedException(line);
}
}
var children = o.Children;
foreach (var c in o.Children)
{
var geometry = c.geometry;
geometry.ComputeNormals();
geometry.ComputeBoundingSphere();
}
return o;
}
private static Mesh CreateCube(Renderer renderer, Scene scene, string texturesPath, MeshBasicMaterial material)
{
var cube = new Mesh(new SphereGeometry(1, 50, 50), material);
return cube;
}
private static void Init()
{
camera = new PerspectiveCamera(renderer, 30, 1, 10000 )
{
Position = new Vector3(0,0,100)
};
cameraRTT = new OrthographicCamera(renderer, -10000, 10000 )
{
Position= new Vector3(0,0,100)
};
scene = new Scene();
sceneRTT = new Scene();
sceneScreen = new Scene();
var light = new DirectionalLight( Color.White )
{
Position = Vector3.UnitZ.Normalized()
};
sceneRTT.Add( light );
light = new DirectionalLight(new Color(0xffaaaa))
{
Position = Vector3.UnitNegativeZ.Normalized(),
Intensity = 1.5f
};
sceneRTT.Add( light );
rtTexture = new RenderTarget(renderer.Width, renderer.Height)
{
MinFilter = TextureMinFilter.Linear,
MagFilter = TextureMagFilter.Nearest,
Format = Three.Net.Renderers.PixelFormat.RGB
};
var vertexShaderSource = @"
varying vec2 vUv;
void main()
{
vUv = uv;
gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
}";
var fragment_shader_screenSource = @"
varying vec2 vUv;
uniform sampler2D tDiffuse;
void main()
{
gl_FragColor = texture2D( tDiffuse, vUv );
}";
var fragment_shader_pass_1Source = @"
varying vec2 vUv;
uniform float time;
void main()
{
float r = vUv.x;
if( vUv.y < 0.5 ) r = 0.0;
float g = vUv.y;
if( vUv.x < 0.5 ) g = 0.0;
gl_FragColor = vec4( r, g, time, 1.0 );
}";
material = new CustomShaderMaterial(renderer,vertexShaderSource,fragment_shader_pass_1Source, m => { });
var materialScreen = new CustomShaderMaterial(renderer, vertexShaderSource, fragment_shader_screenSource, m => {})
{
ShouldDepthWrite = false
};
var plane = new PlaneGeometry( renderer.Width, renderer.Height);
var quad = new Mesh( plane, material )
{
Position = new Vector3(0,0,-100)
};
sceneRTT.Add( quad );
var geometry = new TorusGeometry( 100, 25, 15, 30 );
var mat1 = new MeshPhongMaterial(renderer)
{
Diffuse = new Color(0x555555),
Specular = new Color(0xffaa00),
Shininess = 5
};
var mat2 = new MeshPhongMaterial(renderer)
{
Diffuse = new Color(0x550000),
Specular = new Color(0xff2200),
Shininess = 5
};
zmesh1 = new Mesh( geometry, mat1 )
{
Position = new Vector3( 0, 0, 100 ),
Scale = new Vector3( 1.5f, 1.5f, 1.5f )
};
sceneRTT.Add( zmesh1 );
zmesh2 = new Mesh( geometry, mat2 )
{
Position = new Vector3( 0, 150, 100 ),
Scale = new Vector3( 0.75f, 0.75f, 0.75f)
};
sceneRTT.Add( zmesh2 );
quad = new Mesh( plane, materialScreen ){
Position = new Vector3(0,0,-100)
};
sceneScreen.Add( quad );
var n = 5;
var sphereGeometry = new SphereGeometry( 10, 64, 32 );
var material2 = new MeshBasicMaterial(renderer)
{
Diffuse = Color.White,
DiffuseMap = rtTexture
};
for( var j = 0; j < n; j ++ ) {
for( var i = 0; i < n; i ++ ) {
var mesh = new Mesh(sphereGeometry, material2)
{
Position = new Vector3(
( i - ( n - 1 ) / 2 ) * 20,
( j - ( n - 1 ) / 2 ) * 20,
0),
Rotation = new Euler(0,-Mathf.Pi / 2, 0)
};
scene.Add( mesh );
}
}
renderer.ShouldAutoClear = false;
}