public static Vector3D[] ComputeNormals(Vector3D[] input)
{
//http://stackoverflow.com/questions/1777206/3d-surface-normal-extractor
Vector3D[] normals = new Vector3D[input.Length];
List<Triangle> faces = new List<Triangle>();
int count = input.Length / 3;
for (int i = 0; i < count; i++)
{
faces.Add(new Triangle(input[(i*3)], input[(i*3) + 1], input[(i*3) + 2]));
}
// loop over all faces to calculate vertex normals
for (int i = 0; i < faces.Count; i++)
{
Vector3D v1 = faces[i].vertex1;
Vector3D v2 = faces[i].vertex2;
Vector3D v3 = faces[i].vertex3;
Vector3D edge1 = v2 - v1;
Vector3D edge2 = v3 - v1;
Vector3D normal = edge1.CrossProduct(edge2); // or edge2.CrossProduct(edge1)
normal = normal.Normalize();
normals[i] += normal;
normals[i+1] += normal;
normals[i+2] += normal;
}
// vertex normals need to be normalised
for (int i = 0; i < normals.Length; i++)
{
normals[i] = normals[i].Normalize();
}
return normals;
}
public static Vector3D ComputeFaceNormal(Vector3D p1, Vector3D p2, Vector3D p3)
{
Vector3D a = p3 - p2;
Vector3D b = p1 - p2;
//Compute cross product
Vector3D pn = VectorGetNormal(a, b);
return VectorNormalize(pn);
}
static Vector3D VectorGetNormal(Vector3D a, Vector3D b)
{
Vector3D output = new Vector3D();
output.X = a.Y * b.Z - a.Z * b.Y;
output.Y = a.Z * b.X - a.X * b.Z;
output.Z = a.X * b.Y - a.Y * b.X;
return output;
}
static Vector3D VectorNormalize(Vector3D input)
{
float len = (float)Math.Sqrt(sqr(input.X) + sqr(input.Y) + sqr(input.Z));
Vector3D output = new Vector3D();
output.X = input.X / len;
output.Y = input.Y / len;
output.Z = input.Z / len;
return output;
}
//End TODO
/// <summary>
/// Checks if a given point is within a bounding box
/// </summary>
/// <param name="point">The point to test</param>
/// <returns></returns>
public bool PointWithin(Vector3D _point)
{
// Vector3D training = new Vector3D(0, 0, 10.9f);
Vector3D point = _point;// + training;
if (point.X > minX.X & point.Y > minY.Y & point.Z > minZ.Z & point.X < maxX.X & point.Y < maxY.Y & point.Z < maxX.Z)
{
return true;
}
else
{
return false;
}
}
//End TODO
/// <summary>
/// Checks if a given point is within a bounding box
/// </summary>
/// <param name="point">The point to test</param>
/// <returns></returns>
public bool PointWithin(Vector3D _point)
{
if (!OptimizationEnabled)
{
return true;
}
// Vector3D training = new Vector3D(0, 0, 10.9f);
Vector3D point = _point;// + training;
if (point.X >= minX.X && point.Y >= minY.Y && point.Z >= minZ.Z && point.X <= maxX.X && point.Y <= maxY.Y && point.Z <= maxZ.Z)
{
return true;
}
else
{
return false;
}
}
public Triangle(Vector3D v1, Vector3D v2, Vector3D v3)
{
vertex1 = v1;
vertex2 = v2;
vertex3 = v3;
}
public DXVertBuffer(DirectEngine mgine,Vector3D[] vertices,Vector3D[] normals, Vector2D[] texcoords)
{
engine = mgine;
verts = vertices;
norms = normals;
texas = texcoords;
}
/// <summary> ///Creates a generic vertex buffer /// </summary> /// <returns> /// A <see cref="VertexBuffer"/> /// </returns> public abstract VertexBuffer CreateVertexBuffer(Vector3D[] vertices, Vector2D[] texcoords, Vector3D[] normals);
public abstract void SetRenderTarget(Texture2D texture, Vector3D campos, Vector3D camrot);
/// <summary>
/// Creates a quad
/// </summary>
/// <param name="vertices">Input vertices specific to this quad</param>
/// <param name="texcoords">Input texcoords specific to this quad</param>
/// <param name="normals">Input normals specific to this quad</param>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="z"></param>
/// <param name="cx"></param>
/// <param name="cy"></param>
/// <param name="cz"></param>
/// <param name="inputnormals"></param>
/// <param name="inputtexcoords"></param>
public static void CreateQuad(out Vector3D[] vertices, out Vector2D[] texcoords,out Vector3D[] normals, float x, float y, float z, float cx, float cy, float cz, Vector3D[] inputnormals, Vector2D[] inputtexcoords)
{
Vector3D[] verts;
Vector2D[] faketexcoords;
Vector3D[] norms;
plotQuad(out verts, out faketexcoords, x, y, z, cx - x, cy - y, cz - z);
vertices = verts;
normals = inputnormals;
//TODO: Calculate the NEW texcoords through subtraction
List<Vector2D> texc = new List<Vector2D>();
for(int i = 0;i<vertices.Length;i++)
{
texc.Add(new Vector2D(faketexcoords[i].X - inputtexcoords[i].X, faketexcoords[i].Y - inputtexcoords[i].Y));
}
texcoords = texc.ToArray();
}
public static void plotRectangle(out Vector3D[] vertices,out Vector2D[] texcoords, float x, float y, float z, float width, float height)
{
List<Vector3D> points = new List<Vector3D>();
//First triangle
//0,0,0
points.Add(new Vector3D(x,y,z));
//0,1,0
points.Add(new Vector3D(x,y+height,z));
//1,1,0
points.Add(new Vector3D(x+width,y+height,z));
//Second triangle
//1,1,0
points.Add(new Vector3D(x+width,y+height,z));
//1,0,0
points.Add(new Vector3D(x+width,y,z));
//0,0,0
points.Add(new Vector3D(x,y,z));
//Create texcoords
List<Vector2D> t = new List<Vector2D>();
//0,0
t.Add(new Vector2D(0,0));
//0,1
t.Add(new Vector2D(0,.5f));
//1,1
t.Add(new Vector2D(.5f,.5f));
//1,1
t.Add(new Vector2D(1,1));
//1,0
t.Add(new Vector2D(1,.5f));
//0,0
t.Add(new Vector2D(.5f,.5f));
vertices = points.ToArray();
texcoords = t.ToArray();
}
public override _3DAPI.VertexBuffer CreateVertexBuffer(Vector3D[] vertices, Vector2D[] texcoords, Vector3D[] normals)
{
return new WPVertexBuffer(this, vertices, texcoords, normals);
}
public override void SetRenderTarget(Texture2D texture, Vector3D cpos, Vector3D crot)
{
spos = cpos;
srot = crot;
rendertexture = texture as GLTexture;
//TODO: Use a RenderTargetOperation instead of this method
//SetRenderTargetOperation mop = new SetRenderTargetOperation(this,texture as GLTexture,cpos,crot);
}
public RenderTargetChange(DXTexture target, DirectEngine engine, Vector3D _campos, Vector3D _camrot)
{
_engine = engine;
interntarget = target;
if (mchange != null)
{
hasran = true;
previous = mchange.previous;
}
mchange = this;
prevpos = _engine.cameraPosition;
prevrot = _engine.worldRotation;
campos = _campos;
camrot = _camrot;
}
public override void SetRenderTarget(_3DAPI.Texture2D texture, _3DAPI.Vector3D pos, _3DAPI.Vector3D rot)
{
tex = texture as WPTexture;
position = pos;
rotation = rot;
}
public SetRenderTargetOperation(GLRenderer mder, GLTexture ite, Vector3D sp, Vector3D sr)
{
internrenderer = mder;
itexture = ite;
spos = sp;
srot = sr;
}
public GlVertexNotSupportedBuffer(Vector3D[] vertices, Vector2D[] texcoords, Vector3D[] normals, GLRenderer nder)
{
verts = vertices;
texc = texcoords;
norms = normals;
renderer = nder;
}
public GlVertexBuffer(Vector3D[] vertices, Vector2D[] _texcoords, Vector3D[] _normals, GLRenderer _rend)
{
renderer = _rend;
verts = vertices;
texcoords = _texcoords;
normals = _normals;
for (int i = 0; i < texcoords.Length; i++)
{
texcoords[i].Y *= -1;
}
}
public Vertex(Vector3D Position, Vector3D normal, Vector2D Texture)
{
position = new Vector3(Position.X,Position.Y,Position.Z);
Normal = new Vector3(normal.X,normal.Y,normal.Z);
texcoord = new Vector2(Texture.X,Texture.Y);
}
public override void SetRenderTarget(Texture2D texture, Vector3D campos, Vector3D camrot)
{
RenderTargetChange mchange = new RenderTargetChange(texture as DXTexture, this,campos,camrot);
}
/// <summary>
/// Computes a rotational direction
/// </summary>
/// <param name="rotation"></param>
public static Vector3D ComputeRotation(Vector3D rotation)
{
Vector3D retval = new Vector3D();
retval.X += (float)Math.Sin(-rotation.Y * piover180);
retval.Z += (float)Math.Cos(rotation.Y * piover180);
retval.Y += (float)Math.Sin(rotation.X * piover180);
return retval;
}
public override VertexBuffer CreateVertexBuffer(Vector3D[] vertices, Vector2D[] texcoords, Vector3D[] normals)
{
if (BasicShader.supportsShaders)
{
Console.WriteLine("SHADER");
GlVertexBuffer mbuff = new GlVertexBuffer(vertices, texcoords, normals, this);
return mbuff;
}
else
{
Console.WriteLine("NSSS");
GlVertexNotSupportedBuffer mbuff = new GlVertexNotSupportedBuffer(vertices, texcoords, normals, this);
return mbuff;
}
}
public static void Main(string[] args)
{
try {
// throw new Exception();
renderer = new DirectXLib.DirectEngine();
flip = true;
}catch(Exception) {
renderer = new GLRenderer();
flip = false;
}
renderer.cameraPosition.Z = -5;
Shader myder = renderer.createBasicShader();
//Uncomment for AABB collisions
//physicsworld.testtype = CollisionTestType.AABB;
myder.Draw();
Bitmap mmap = new Bitmap("pic.jpg");
Texture2D mtex = renderer.createTextureFromBitmap(mmap);
Bitmap newmap = new Bitmap("pic.jpg");
Graphics tfix = Graphics.FromImage(newmap);
tfix.DrawString("Hello world!", new Font(FontFamily.GenericMonospace, 16), Brushes.Red, new PointF(0, 0));
tfix.Dispose();
mtex.UploadBitmap(newmap);
mtex.Draw();
rtex = renderer.createTexture(512, 512);
rtex.Draw();
Mesh[] meshes = Primitives.LoadMesh("playercube.obj",flip);
collisiontester = new PhysicalObject(meshes[0].meshverts, 5, CollisionType.Dynamic,physicsworld);
collisiontester.Position = new Vector3D(-5, 0, 0);
mainmesh = meshes[0];
foreach (Mesh mesh in meshes)
{
VertexBuffer tbuff = renderer.CreateVertexBuffer(mesh.meshverts, mesh.meshtexas, mesh.meshnorms);
rotatingbuffer = tbuff;
if (mesh.bitmap != null)
{
Console.WriteLine("BITMAP RENDER");
Texture2D tt = renderer.createTextureFromBitmap(mesh.bitmap);
tt.Draw();
}
tbuff.Draw();
}
mtex.Draw();
Mesh cube = Primitives.LoadMesh("playercube.obj",flip)[0];
theobject = new PhysicalObject(cube.meshverts, 9, CollisionType.Dynamic,physicsworld);
collisiontester.ownedVBO = rotatingbuffer;
theobject.ownedVBO = renderer.CreateVertexBuffer(cube.meshverts, cube.meshtexas, cube.meshnorms);
theobject.ownedVBO.Draw();
physicsworld.physicalobjects.Add(theobject);
physicsworld.physicalobjects.Add(collisiontester);
Mesh anothercube = Primitives.LoadMesh("playercube.obj",flip)[0];
PhysicalObject mobject = new PhysicalObject(anothercube.meshverts.Clone() as Vector3D[], 1, CollisionType.Dynamic,physicsworld);
mobject.ownedVBO = renderer.CreateVertexBuffer(anothercube.meshverts, anothercube.meshtexas, anothercube.meshnorms);
physicsworld.physicalobjects.Add(mobject);
mobject.ownedVBO.Draw();
mobject.Position = new Vector3D(30, 0, 0);
//Set physics properties
theobject.Weight = 1;
collisiontester.Weight = 1;
//collisiontester.Velocity = new Vector3D(.05f, 0, 0);
theobject.Position = new Vector3D(15, 0, 0);
theobject.IsCube = true;
theobject.Weight = 9999999;
mobject.IsCube = true;
//End physics properties
physicsworld.Start();
physicsworld.physicsUpdateFrame += new System.Threading.ThreadStart(physicsworld_physicsUpdateFrame);
System.Threading.Thread mthread = new System.Threading.Thread(thetar);
mthread.Start();
foreach (Keyboard et in renderer.GetExtensionKeyboards())
{
et.onKeyDown += new keyboardeventargs(defaultKeyboard_onKeyDown);
et.onKeyUp += new keyboardeventargs(defaultKeyboard_onKeyUp);
}
renderer.defaultMouse.onMouseMove += new mouseEvent(defaultMouse_onMouseMove);
renderer.defaultMouse.onMouseDown += new mouseEvent(defaultMouse_onMouseDown);
//Draw a quad
List<Vector3D> overts = new List<Vector3D>();
List<Vector3D> onorms = new List<Vector3D>();
List<Vector2D> ocords = new List<Vector2D>();
//Triangle 0
overts.Add(new Vector3D(-1,-1,0));
overts.Add(new Vector3D(-1,1,0));
overts.Add(new Vector3D(1,1,0));
ocords.Add(new Vector2D(0,0));
ocords.Add(new Vector2D(0,1));
ocords.Add(new Vector2D(1,1));
//Triangle 1
overts.Add(new Vector3D(1,1,0));
overts.Add(new Vector3D(1,-1,0));
overts.Add(new Vector3D(-1,-1,0));
ocords.Add(new Vector2D(1,1));
ocords.Add(new Vector2D(1,0));
ocords.Add(new Vector2D(0,0));
float zfactor = 900;
for(int i = 0;i<overts.Count;i++) {
//Translate by -1
overts[i] = new Vector3D((overts[i].X)*zfactor,(overts[i].Y)*zfactor,overts[i].Z);
}
for(int i = 0;i<overts.Count;i++) {
onorms.Add(new Vector3D(1,1,1));
}
mbuff = renderer.CreateVertexBuffer(overts.ToArray(),ocords.ToArray(),onorms.ToArray());
mbuff.IsStatic = true;
mbuff.Position.Z = zfactor;
//rtex.Draw();
mbuff.Draw();
mtex.Draw();
}
/// <summary>
/// Gets the center between two vectors
/// </summary>
/// <param name="othervect">The other vector to center</param>
/// <returns></returns>
public Vector3D Center(Vector3D othervect)
{
return new Vector3D((othervect.X + X) / 2, (othervect.Y + Y) / 2, (othervect.Z + Z) / 2);
}
public WPVertexBuffer(PhoneRenderer mder, Vector3D[] verts, Vector2D[] tex, Vector3D[] norms)
{
renderer = mder;
vertices = verts;
normals = norms;
texcoords = tex;
}
public Vector3D CrossProduct(Vector3D b)
{
return new Vector3D(Y * b.Z - Z * b.Y,Z*b.X-X*b.Z,X*b.Y-Y*b.X);
}
static void thetar()
{
renderer.cameraPosition.Z -= 5f;
while (isrunning)
{
//theobject.ownedVBO.rotation.X += .01f;
Vector3D prevpos = renderer.cameraPosition;
//rotatingbuffer.rotation.Y = MathHelpers.DegreesToRadians(-90);
//rotatingbuffer.rotation.Y += .01f;
Vector3D cameraPosition = new Vector3D(0, 0, 0);
Vector3D direction = Vector3D.ComputeRotation(new Vector3D(renderer.worldRotation.X, renderer.worldRotation.Y, renderer.worldRotation.Z));
direction.Y *= -1;
Vector3D direction2 = Vector3D.ComputeRotation(new Vector3D(renderer.worldRotation.X, renderer.worldRotation.Y - 90, renderer.worldRotation.Z));
if (left)
{
cameraPosition.X -= .1f * direction2.X;
cameraPosition.Z -= .1f * direction2.Z;
}
if (right)
{
cameraPosition.X += .1f * direction2.X;
cameraPosition.Z += .1f * direction2.Z;
}
if (up)
{
cameraPosition.Z += .1f * direction.Z;
cameraPosition.X += .1f * direction.X;
}
if (down)
{
cameraPosition.Z -= .1f * direction.Z;
cameraPosition.X -= .1f * direction.X;
}
// collisiontester.Rotation = rotatingbuffer.rotation;
renderer.cameraPosition += cameraPosition;
if (collisiontester.Contains(renderer.cameraPosition))
{
renderer.cameraPosition = prevpos;
}
System.Threading.Thread.Sleep(10);
}
}
public override _3DAPI.VertexBuffer CreateVertexBuffer(Vector3D[] vertices, Vector2D[] texcoords, Vector3D[] normals)
{
for (int i = 0; i < vertices.Length; i++)
{
vertices[i] = new Vector3D(-vertices[i].X, vertices[i].Y, vertices[i].Z);
}
return new DXVertBuffer(this, vertices, normals, texcoords);
}
