public void TriangleRenderKnot3()
{ //scale and offset all verts.
//flip verts since image top is 0,0
var mesh = ObjFileLoader.LoadMeshFromObjAtPath(new System.IO.FileInfo("../../../../../geometry_models/knot3/knot3.obj"));
var tris = mesh.Triangles;
mesh.VertexData = mesh.VertexData.Select(x => Vector4.Multiply(x, new Vector4(1.0f, 1.0f, 1.0f, 1.0f)))
//scale and offset.
.Select(x => Vector4.Multiply(Vector4.Add(x, new Vector4(5, 5, 0, 0)), 120)).ToArray();
var renderer = new Triangle2dRenderer(1024, 768, new List <IEnumerable <TriangleFace> > {
tris
});
renderer.VertexData = mesh.VertexData.Select(x => new Vector3(x.X, x.Y, x.Z)).ToArray();
var image = new ppmImage(1024, 768, 255);
image.Colors = renderer.Render();
Assert.AreEqual(736261, image.Colors.Where(x => x == Color.Red).Count());
System.IO.File.WriteAllBytes("../../../knotTest3.ppm", image.toByteArray());
}
public void MeshRenderPerspProjectionShader()
{
var cameraPos = new Vector3(0, 0, 4);
var target = new Vector3(0, 0, 0);
var view = Matrix4x4.CreateLookAt(cameraPos, target, Vector3.UnitY);
var proj = Matrix4x4.CreatePerspective(4, 3, 1, 10);
var viewport = MatrixExtensions.CreateViewPortMatrix(0, 0, 255, 640, 480);
var mesh = ObjFileLoader.LoadMeshFromObjAtPath(new System.IO.FileInfo("../../../../../geometry_models/knot3/knot3.obj"));
var renderable = new Renderable <Mesh>(
new Material()
{
Shader = new Base3dShader(view, proj, viewport)
},
mesh);
var renderer = new Renderer3dGeneric <Mesh>(640, 480, Color.White,
new List <IEnumerable <Renderable <Mesh> > > {
new List <Renderable <Mesh> > {
renderable
}
});
var image = new ppmImage(640, 480, 255);
image.Colors = renderer.Render();
System.IO.File.WriteAllBytes("../../../perspectiveTest1.ppm", image.toByteArray());
Assert.AreEqual(300249, image.Colors.Where(x => x == Color.White).Count());
}
public void lineRenderTeapot()
{
var lines = new List <List <(Vector2, Vector2, Color)> >();
var verts = ObjFileLoader.LoadVertsFromObjAtPath(new System.IO.FileInfo("../../../../../geometry_models/teapot.obj"))
.Select(x => Vector4.Add(x, new Vector4(5, 5, 0, 0))).ToArray();
var tris = ObjFileLoader.LoadTrisFromObjAtPath(new System.IO.FileInfo("../../../../../geometry_models/teapot.obj"));
var trilines = tris.SelectMany(x =>
new List <(Vector2, Vector2, Color)>()
{
(new Vector2(verts[x.vertIndexList[0] - 1].X * 50, verts[x.vertIndexList[0] - 1].Y * 50),
new Vector2(verts[x.vertIndexList[1] - 1].X * 50, verts[x.vertIndexList[1] - 1].Y * 50), Color.White),
(new Vector2(verts[x.vertIndexList[1] - 1].X * 50, verts[x.vertIndexList[1] - 1].Y * 50),
new Vector2(verts[x.vertIndexList[2] - 1].X * 50, verts[x.vertIndexList[2] - 1].Y * 50), Color.White),
(new Vector2(verts[x.vertIndexList[2] - 1].X * 50, verts[x.vertIndexList[2] - 1].Y * 50),
new Vector2(verts[x.vertIndexList[0] - 1].X * 50, verts[x.vertIndexList[0] - 1].Y * 50), Color.White),
}
);
lines.Add(trilines.ToList());
var renderer = new LineRenderer2d(640, 480, lines);
var image = new ppmImage(640, 480, 255);
image.Colors = renderer.Render();
Assert.AreEqual(18702, image.Colors.Where(x => x == Color.White).Count());
System.IO.File.WriteAllBytes("../../../linetest_teapot.ppm", image.toByteArray());
}
public void Prespective_Tex_Map()
{
var cameraPos = new Vector3(0, 0, 2);
var target = new Vector3(0, 0, 0);
var width = 1024;
var height = 1024;
var view = Matrix4x4.CreateLookAt(cameraPos, target, Vector3.UnitY);
var proj = Matrix4x4.CreatePerspective(4, 4, 1, 10);
var viewport = MatrixExtensions.CreateViewPortMatrix(0, 0, 255, width, height);
var mesh = ObjFileLoader.LoadMeshFromObjAtPath(new System.IO.FileInfo("../../../../../geometry_models/knot3/knot3.obj"));
var diffuseTex = new ppmImage("../../../../../textures/testTexture2.ppm");
var renderable = new Renderable <Mesh>(
new DiffuseMaterial()
{
Shader = new TextureShader(view, proj, viewport),
DiffuseTexture = new Texture2d(diffuseTex.Width, diffuseTex.Height, diffuseTex.Colors)
},
mesh);
var renderer = new Renderer3dGeneric <Mesh>(width, height, Color.White,
new List <IEnumerable <Renderable <Mesh> > > {
new List <Renderable <Mesh> > {
renderable
}
});
var image = new ppmImage(width, height, 255);
image.Colors = renderer.Render();
System.IO.File.WriteAllBytes("../../../perspectiveTestDiffuse.ppm", image.toByteArray());
Assert.AreEqual(847497, image.Colors.Where(x => x == Color.White).Count());
}
public void MeshRenderUVsAndTexture()
{
var mesh = ObjFileLoader.LoadMeshFromObjAtPath(new System.IO.FileInfo("../../../../../geometry_models/knot3/knot3.obj"));
var tris = mesh.Triangles;
mesh.VertexData = mesh.VertexData.Select(x => Vector4.Multiply(x, new Vector4(1.0f, 1.0f, 1.0f, 1.0f)))
//scale and offset.
.Select(x => Vector4.Multiply(Vector4.Add(x, new Vector4(5, 5, 0, 0)), 120.0f)).ToArray();
var ppm = new ppmImage("../../../../../textures/testTexture2.ppm");
var renderable = new Renderable <Mesh>(
new DiffuseMaterial()
{
Shader = new TextureShader(Matrix4x4.Identity, Matrix4x4.Identity, Matrix4x4.Identity),
DiffuseTexture = new Texture2d(ppm.Width, ppm.Height, ppm.Colors)
},
mesh);
var renderer = new Renderer2dGeneric <Mesh>(1024, 768, Color.Black, new List <IEnumerable <Renderable <Mesh> > > {
new List <Renderable <Mesh> > {
renderable
}
});
var image = new ppmImage(1024, 768, 255);
image.Colors = renderer.Render();
System.IO.File.WriteAllBytes("../../../ShaderRender2.ppm", image.toByteArray());
//how many pixels are bluish...
Assert.AreEqual(4053, image.Colors.Where(x => Utilities.ComputeSimpleColorDistance(x, Color.FromArgb(41, 92, 144)) < 50).Count());
}
public void MeshRendererCanRenderKnot_WithSimpleShaders()
{
var mesh = ObjFileLoader.LoadMeshFromObjAtPath(new System.IO.FileInfo("../../../../../geometry_models/knot3/knot3.obj"));
var tris = mesh.Triangles;
mesh.VertexData = mesh.VertexData.Select(x => Vector4.Multiply(x, new Vector4(1.0f, 1.0f, 1.0f, 1.0f)))
//scale and offset.
.Select(x => Vector4.Multiply(Vector4.Add(x, new Vector4(5, 5, 0, 0)), 120.0f)).ToArray();
var renderable = new Renderable <Mesh>(new Material()
{
Shader = new Shader()
}, mesh);
var renderer = new Renderer2dGeneric <Mesh>(1024, 768, Color.Black, new List <IEnumerable <Renderable <Mesh> > > {
new List <Renderable <Mesh> > {
renderable
}
});
var image = new ppmImage(1024, 768, 255);
image.Colors = renderer.Render();
Assert.AreEqual(736261, image.Colors.Where(x => x == Color.Black).Count());
System.IO.File.WriteAllBytes("../../../ShaderRender1.ppm", image.toByteArray());
}
public void LoadPNGImageWithAlpha()
{
//load a ppm
var png = PNGImage.LoadPNGFromPath("../../../../../textures/testTextureWithSomeAlpha.png");
var ppm = new ppmImage(512, 512, 255);
ppm.Colors = png.Colors;
Assert.AreEqual(png.Colors.Where(x => x == Color.FromArgb(255, 216, 216, 216)).Count(), 11016);
var savePath = "../../../../../testTextureWithSomeAlpha.ppm";
System.IO.File.WriteAllBytes(savePath, ppm.toByteArray());
}
public void Prespective_Normal_Map_TinyRenderReferenceAnimation()
{
var cameraPos = new Vector3(-.6f, .6f, 3);
var target = new Vector3(0, 0, 0);
var width = 480;
var height = 480;
var view = Matrix4x4.CreateLookAt(cameraPos, target, Vector3.UnitY);
var proj = Matrix4x4.CreatePerspective(1, 1, 1, 10);
var viewport = MatrixExtensions.CreateViewPortMatrix(0, 0, 255, width, height);
var mesh = ObjFileLoader.LoadMeshFromObjAtPath(new System.IO.FileInfo(Path.Combine(root, "geometry_models/tiny_renderer_sample_models/african_head.obj")));
var diffuseTex = PNGImage.LoadPNGFromPath(Path.Combine(root, "geometry_models/tiny_renderer_sample_models/african_head_diffuse2.png"));
var normalMap = PNGImage.LoadPNGFromPath(Path.Combine(root, "geometry_models/tiny_renderer_sample_models/african_head_nm_tangent.png"));
var lightvals = Enumerable.Range(0, 11).Select(x => (x / 5.0) - 1.0).ToList();
var renderable = new Renderable <Mesh>(
new NormalMaterial()
{
Shader = new NormalShader(view, proj, viewport)
{
ambientCoef = 10, LightDirection = new Vector3(0, 0, 1)
},
DiffuseTexture = new Texture2d(diffuseTex.Width, diffuseTex.Height, diffuseTex.Colors),
NormalMap = new Texture2d(normalMap.Width, normalMap.Height, normalMap.Colors)
},
mesh);
var renderer = new Renderer3dGeneric <Mesh>(width, height, Color.White,
new List <IEnumerable <Renderable <Mesh> > > {
new List <Renderable <Mesh> > {
renderable
}
});
for (var i = 0; i < lightvals.Count; i++)
{
var mat = Matrix4x4.CreateRotationY(0.174533f * 3f);
var transformedLightDir = Vector3.Transform(renderable.material.Shader.LightDirection, Matrix4x4.Transpose(mat));
renderable.material.Shader.LightDirection = transformedLightDir;
var image = new ppmImage(width, height, 255);
image.Colors = renderer.Render();
image.Flip();
var path = $"../../../animation1/perspectiveTestNormalHead{i}.ppm";
System.IO.FileInfo file = new System.IO.FileInfo(path);
file.Directory.Create();
System.IO.File.WriteAllBytes(path, image.toByteArray());
}
}
public void LoadPPMImage()
{
//load a ppm
var ppm = new ppmImage("../../../../../textures/testTexture2.ppm");
//write it back out
var savePath = System.IO.Path.GetTempFileName();
System.IO.File.WriteAllBytes(savePath, ppm.toByteArray());
//load it back
var ppm2 = new ppmImage(savePath);
Assert.AreEqual(ppm.Width, ppm2.Width);
Assert.AreEqual(ppm.Height, ppm2.Height);
Assert.AreEqual(ppm.maxColorValue, ppm2.maxColorValue);
Assert.IsTrue(ppm.Colors.SequenceEqual(ppm2.Colors));
//cleanup
System.IO.File.Delete(savePath);
}
public void lineRender2dsimpleLines()
{
var lines = new List <List <(Vector2, Vector2, Color)> >()
{
new List <(Vector2, Vector2, Color)> {
(new Vector2(13, 20), new Vector2(80, 40), Color.White),
(new Vector2(20, 13), new Vector2(40, 80), Color.White),
(new Vector2(80, 40), new Vector2(80, 480), Color.White),
(new Vector2(0, 0), new Vector2(320, 240), Color.White)
}
};
var renderer = new LineRenderer2d(640, 480, lines);
var image = new ppmImage(640, 480, 255);
image.Colors = renderer.Render();
Assert.AreEqual(930, image.Colors.Where(x => x == Color.White).Count());
System.IO.File.WriteAllBytes("../../../linetest.ppm", image.toByteArray());
}
public void LoadComplexOBJTestAsMesh2()
{ //scale and offset all verts.
//flip verts since image top is 0,0
var mesh = ObjFileLoader.LoadMeshFromObjAtPath(new System.IO.FileInfo("../../../../../geometry_models/knot3/knot3.obj"));
var tris = mesh.Triangles;
mesh.VertexData = mesh.VertexData.Select(x => Vector4.Multiply(x, new Vector4(1.0f, 1.0f, 1.0f, 1.0f)))
//scale and offset.
.Select(x => Vector4.Multiply(Vector4.Add(x, new Vector4(5, 5, 0, 0)), 120)).ToArray();
var verts = mesh.VertexData;
var lines = new List <List <(Vector2, Vector2, Color)> >();
var trilines = tris.SelectMany(x =>
new List <(Vector2, Vector2, Color)>()
{
(new Vector2(verts[x.vertIndexList[0] - 1].X, verts[x.vertIndexList[0] - 1].Y),
new Vector2(verts[x.vertIndexList[1] - 1].X, verts[x.vertIndexList[1] - 1].Y), Color.White),
(new Vector2(verts[x.vertIndexList[1] - 1].X, verts[x.vertIndexList[1] - 1].Y),
new Vector2(verts[x.vertIndexList[2] - 1].X, verts[x.vertIndexList[2] - 1].Y), Color.White),
(new Vector2(verts[x.vertIndexList[2] - 1].X, verts[x.vertIndexList[2] - 1].Y),
new Vector2(verts[x.vertIndexList[0] - 1].X, verts[x.vertIndexList[0] - 1].Y), Color.White),
}
);
lines.Add(trilines.ToList());
var renderer = new LineRenderer2d(1024, 768, lines);
var image = new ppmImage(1024, 768, 255);
image.Colors = renderer.Render();
Assert.AreEqual(38703, image.Colors.Where(x => x == Color.White).Count());
System.IO.File.WriteAllBytes("../../../objLoaderTest2.ppm", image.toByteArray());
}
public void TriangleRenderTeapot2_usingMeshLoadOBJ()
{
var mesh = ObjFileLoader.LoadMeshFromObjAtPath(new System.IO.FileInfo("../../../../../geometry_models/teapot.obj"));
var tris = mesh.Triangles;
mesh.VertexData = mesh.VertexData.Select(x => Vector4.Multiply(x, new Vector4(1.0f, -1.0f, 1.0f, 1.0f)))
//scale and offset.
.Select(x => Vector4.Multiply(Vector4.Add(x, new Vector4(5, 5, 0, 0)), 100)).ToArray();
var renderer = new Triangle2dRenderer(1024, 768, new List <IEnumerable <TriangleFace> > {
tris
});
renderer.VertexData = mesh.VertexData.Select(x => new Vector3(x.X, x.Y, x.Z)).ToArray();
var image = new ppmImage(1024, 768, 255);
image.Colors = renderer.Render();
Assert.AreEqual(677784, image.Colors.Where(x => x == Color.Red).Count());
System.IO.File.WriteAllBytes("../../../teapotTest2.ppm", image.toByteArray());
}
public void Prespective_Normal_Map_ZbrushMando1()
{
var cameraPos = new Vector3(-2f, 1, 4f);
var target = new Vector3(0, 0, 0);
var width = 2048;
var height = 2048;
var view = Matrix4x4.CreateLookAt(cameraPos, target, Vector3.UnitY);
var proj = Matrix4x4.CreatePerspective(1, 1, 1, 10);
var viewport = MatrixExtensions.CreateViewPortMatrix(0, 0, 255, width, height);
var mesh = ObjFileLoader.LoadMeshFromObjAtPath(new System.IO.FileInfo(Path.Combine(root, "geometry_models/mandohead/mandoclean.OBJ")));
var diffuseTex = PNGImage.LoadPNGFromPath(Path.Combine(root, "geometry_models/mandohead/mandocleandiffuse6.png"));
var normalMap = PNGImage.LoadPNGFromPath(Path.Combine(root, "geometry_models/mandohead/mandocleannormal1.png"));
var renderable = new Renderable <Mesh>(
new NormalMaterial()
{
Shader = new NormalShader(view, proj, viewport)
{
ambientCoef = 30, LightDirection = new Vector3(0, 0, 1f)
},
DiffuseTexture = new Texture2d(diffuseTex.Width, diffuseTex.Height, diffuseTex.Colors),
NormalMap = new Texture2d(normalMap.Width, normalMap.Height, normalMap.Colors)
},
mesh);
var renderer = new Renderer3dGeneric <Mesh>(width, height, Color.White,
new List <IEnumerable <Renderable <Mesh> > > {
new List <Renderable <Mesh> > {
renderable
}
});
var image = new ppmImage(width, height, 255);
image.Colors = renderer.Render();
image.Flip();
System.IO.File.WriteAllBytes("../../../perspectiveTestNormalMandoonecolorfront.ppm", image.toByteArray());
Assert.AreEqual(3248415, image.Colors.Where(x => x == Color.White).Count());
}
public void Prespective_Normal_Map_TinyRenderReference()
{
var cameraPos = new Vector3(-.6f, .6f, 3);
var target = new Vector3(0, 0, 0);
var width = 2048;
var height = 2048;
var view = Matrix4x4.CreateLookAt(cameraPos, target, Vector3.UnitY);
var proj = Matrix4x4.CreatePerspective(1, 1, 1, 10);
var viewport = MatrixExtensions.CreateViewPortMatrix(0, 0, 255, width, height);
var mesh = ObjFileLoader.LoadMeshFromObjAtPath(new System.IO.FileInfo("../../../../../geometry_models/tiny_renderer_sample_models/african_head.obj"));
var diffuseTex = PNGImage.LoadPNGFromPath("../../../../../geometry_models/tiny_renderer_sample_models/african_head_diffuse2.png");
var normalMap = PNGImage.LoadPNGFromPath("../../../../../geometry_models/tiny_renderer_sample_models/african_head_nm_tangent.png");
var renderable = new Renderable <Mesh>(
new NormalMaterial()
{
Shader = new NormalShader(view, proj, viewport)
{
ambientCoef = 10, LightDirection = new Vector3(0, 0, 1)
},
DiffuseTexture = new Texture2d(diffuseTex.Width, diffuseTex.Height, diffuseTex.Colors),
NormalMap = new Texture2d(normalMap.Width, normalMap.Height, normalMap.Colors)
},
mesh);
var renderer = new Renderer3dGeneric <Mesh>(width, height, Color.White,
new List <IEnumerable <Renderable <Mesh> > > {
new List <Renderable <Mesh> > {
renderable
}
});
var image = new ppmImage(width, height, 255);
image.Colors = renderer.Render();
System.IO.File.WriteAllBytes("../../../perspectiveTestNormalHead.ppm", image.toByteArray());
Assert.AreEqual(3362439, image.Colors.Where(x => x == Color.White).Count());
}
public void RenderIsFlippedCorrectly()
{
var cameraPos = new Vector3(-.6f, .6f, 5);
var target = new Vector3(0, 0, 0);
var width = 2048;
var height = 2048;
var view = Matrix4x4.CreateLookAt(cameraPos, target, Vector3.UnitY);
var proj = Matrix4x4.CreatePerspective(1, 1, 1, 10);
var viewport = MatrixExtensions.CreateViewPortMatrix(0, 0, 255, width, height);
var mesh = ObjFileLoader.LoadMeshFromObjAtPath(new System.IO.FileInfo(System.IO.Path.Combine(root, "geometry_models/head_asymmetric/head.OBJ")));
var diffuseTex = PNGImage.LoadPNGFromPath(System.IO.Path.Combine(root, "geometry_models/head_asymmetric/head.png"));
var renderable = new Renderable <Mesh>(
new DiffuseMaterial()
{
Shader = new TextureShader(view, proj, viewport)
{
LightDirection = new Vector3(0, 0, 1)
},
DiffuseTexture = new Texture2d(diffuseTex.Width, diffuseTex.Height, diffuseTex.Colors),
},
mesh);
var renderer = new Renderer3dGeneric <Mesh>(width, height, Color.White,
new List <IEnumerable <Renderable <Mesh> > > {
new List <Renderable <Mesh> > {
renderable
}
});
var image = new ppmImage(width, height, 255);
image.Colors = renderer.Render();
image.Flip();
System.IO.File.WriteAllBytes("../../../asymmetricHead.ppm", image.toByteArray());
Assert.AreEqual(3528584, image.Colors.Where(x => x == Color.White).Count());
}
public void lineRender2dArrayedCircle()
{
var lines = new List <List <(Vector2, Vector2, Color)> >();
var center = new Vector2(100, 300);
var points = Enumerable.Range(0, 360).Select(x =>
new Vector2(
(float)(center.X + 100 * Math.Cos(x * (Math.PI / 180.0))),
(float)(center.Y + 100 * Math.Sin(x * (Math.PI / 180.0))))
);
var pairs = points.Select(x => (center, x, Color.White));
lines.Add(pairs.ToList());
var renderer = new LineRenderer2d(640, 480, lines);
var image = new ppmImage(640, 480, 255);
image.Colors = renderer.Render();
Assert.AreEqual(24390, image.Colors.Where(x => x == Color.White).Count());
System.IO.File.WriteAllBytes("../../../linetest_circle.ppm", image.toByteArray());
}
