protected override void OnRenderFrame(FrameEventArgs e)
{
base.OnRenderFrame(e);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
var eye = Vector3.Zero;
eye.Z = 16;
modelview = Matrix4.LookAt(eye, Vector3.UnitZ, Vector3.UnitY);
GL.MatrixMode(MatrixMode.Modelview);
GL.LoadMatrix(ref modelview);
//GL.Disable(EnableCap.Blend);
//Blt(10, 40, TextureWidth, TextureHeight);
GL.Enable(EnableCap.Blend);
//GL.Enable(EnableCap.Blend);
//GL.PushMatrix();
//GL.Scale(0.05, 0.05, 0.05);
//DrawText(0, 0, "Test");
//GL.PopMatrix();
//GL.Disable(EnableCap.Blend);
//GL.Disable(EnableCap.Texture2D);
scene.Draw();
SwapBuffers();
_ready = true;
}
public static void Main1()
{
game = new GameWindow(WINDOW_BASE_WIDTH, WINDOW_BASE_HEIGHT, new GraphicsMode(32, 8, 0, 4));
float size = 80;
float ligthX = size / 2f, ligthY = size - size / 10f, lightZ = size / 2f;
float ligthTopX = size / 2f, ligthTopY = size - size / 10f, lightTopZ = size / 2f;
int count = 15;
int earthTexture = 1;
int caverTexture = 1;
int mishaTextures = 1;
int footBallTextur = 1;
game.Load += (sender, e) =>
{
// setup settings, load textures, sounds
game.VSync = VSyncMode.On;
GL.ClearColor(Color.SkyBlue);
GL.Enable(EnableCap.DepthTest);
Matrix4 p = Matrix4.CreatePerspectiveFieldOfView((float)(45 * game.Width / game.Height * Math.PI / 180), (float)game.Width / game.Height, 1, 500);
GL.MatrixMode(MatrixMode.Projection);
GL.LoadMatrix(ref p);
Matrix4 modelview = Matrix4.LookAt(size / 2, size / 2, size - size / 10, size / 2, size / 2, 0, 0, 1, 0);
GL.MatrixMode(MatrixMode.Modelview);
GL.LoadMatrix(ref modelview);
earthTexture = LoadTexture("texture.png", 1, flip_y: true);
current_texture = LoadTexture("grass.jpg", 1);
caverTexture = LoadTexture("caver.jpg", 1);
mishaTextures = LoadTexture("Misha.jpg", 1);
footBallTextur = LoadTexture("football.png", 1);
//Basically enables the alpha channel to be used in the color buffer
GL.Enable(EnableCap.Blend);
//The operation/order to blend
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
//Use for pixel depth comparing before storing in the depth buffer
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.Normalize);
float[] mat_diffuse = { 0.1f, 0.1f, 0.1f };
GL.Material(MaterialFace.FrontAndBack, MaterialParameter.Specular, mat_diffuse);
//1.0f, 1.0f, 1.0f
float[] whiteSpecularLight = new float[] { 1.0f, 1.0f, 1.0f };
float[] blackAmbientLight = new float[] { 0.1f, 0.1f, 0.1f };
float[] whiteDiffuseLight = new float[] { 1.0f, 1.0f, 1.0f };
GL.Light(LightName.Light0, LightParameter.Specular, whiteSpecularLight);
GL.Light(LightName.Light0, LightParameter.Ambient, blackAmbientLight);
GL.Light(LightName.Light0, LightParameter.Diffuse, whiteDiffuseLight);
GL.Material(MaterialFace.Front, MaterialParameter.Shininess, 30);
GL.LightModel(LightModelParameter.LightModelAmbient, new float[] { 0.1f, 0.1f, 0.1f, 1.0f });
//GL.LightModel(LightModelParameter.LightModelTwoSide, 1);
GL.LightModel(LightModelParameter.LightModelLocalViewer, 1);
GL.Material(MaterialFace.Front, MaterialParameter.Ambient, new float[] { 0.3f, 0.3f, 0.3f, 1.0f });
GL.Material(MaterialFace.Front, MaterialParameter.Diffuse, new float[] { 0.5f, 0.5f, 0.5f, 1.0f });
GL.Material(MaterialFace.Front, MaterialParameter.Specular, new float[] { 0.5f, 0.5f, 0.5f, 1.0f });
GL.Material(MaterialFace.Front, MaterialParameter.Emission, new float[] { 0.0f, 0.0f, 0.0f, 1.0f });
GL.LightModel(LightModelParameter.LightModelColorControl, 1);
//GL.Light(LightName.Light0, LightParameter.ConstantAttenuation, 0.8f);
//GL.Light(LightName.Light0, LightParameter.SpotDirection, new float[] { 0f, -1f, 0f });
//GL.Light(LightName.Light0, LightParameter.ConstantAttenuation, 2f);
//GL.Light(LightName.Light0, LightParameter.SpotCutoff, 34f);
GL.Light(LightName.Light0, LightParameter.ConstantAttenuation, 1.8f);
GL.Light(LightName.Light0, LightParameter.LinearAttenuation, 0.0f);
GL.Light(LightName.Light0, LightParameter.QuadraticAttenuation, 0.0f);
//GL.Light(LightName.Light0, LightParameter.SpotExponent, 1f);
GL.Light(LightName.Light0, LightParameter.Position, new float[] { ligthX, ligthY, lightZ, 1f });
GL.ShadeModel(ShadingModel.Smooth);
GL.Enable(EnableCap.Lighting);
GL.Enable(EnableCap.Light0);
GL.Enable(EnableCap.ColorMaterial);
};
game.Resize += (sender, e) =>
{
GL.Viewport(0, 0, game.Width, game.Height);
Matrix4 p = Matrix4.CreatePerspectiveFieldOfView((float)(45 * game.Width / game.Height * Math.PI / 180), (float)game.Width / game.Height, 1, 500);
GL.MatrixMode(MatrixMode.Projection);
GL.LoadMatrix(ref p);
};
game.UpdateFrame += (sender, e) =>
{
// add game logic, input handling
if (game.Keyboard[Key.Escape])
{
game.Exit();
}
if (game.Keyboard[Key.Space])
{
Matrix4 p = Matrix4.CreatePerspectiveFieldOfView((float)(45 * game.Width / game.Height * Math.PI / 180), (float)game.Width / game.Height, 1, 500);
GL.MatrixMode(MatrixMode.Projection);
GL.LoadMatrix(ref p);
Matrix4 modelview = Matrix4.LookAt(size / 2, size / 2, size - size / 10, size / 2, size / 2, 0, 0, 1, 0);
GL.MatrixMode(MatrixMode.Modelview);
GL.LoadMatrix(ref modelview);
}
if (game.Keyboard[Key.Enter])
{
game.WindowState = OpenTK.WindowState.Fullscreen;
}
if (game.Keyboard[Key.R])
{
ligthX += 0.1f;
ligthY += 0.1f;
lightZ += 0.1f;
}
if (game.Keyboard[Key.T])
{
ligthX -= 0.1f;
ligthY -= 0.1f;
lightZ -= 0.1f;
}
if (game.Keyboard[Key.Down])
{
GL.MatrixMode(MatrixMode.Modelview);
GL.Translate(0, 0, -1);
}
if (game.Keyboard[Key.Up])
{
GL.MatrixMode(MatrixMode.Modelview);
GL.Translate(0, 0, 1);
}
if (game.Keyboard[Key.Left])
{
GL.MatrixMode(MatrixMode.Modelview);
GL.Translate(-1, 0, 0);
}
if (game.Keyboard[Key.Right])
{
GL.MatrixMode(MatrixMode.Modelview);
GL.Translate(1, 0, 0);
}
if (game.Keyboard[Key.D])
{
GL.MatrixMode(MatrixMode.Projection);
GL.Rotate(1, 0, 1, 0);
}
if (game.Keyboard[Key.A])
{
GL.MatrixMode(MatrixMode.Projection);
GL.Rotate(-1, 0, 1, 0);
}
//123
if (game.Keyboard[Key.S])
{
GL.MatrixMode(MatrixMode.Projection);
GL.Rotate(1, 1, 0, 0);
}
if (game.Keyboard[Key.W])
{
GL.MatrixMode(MatrixMode.Projection);
GL.Rotate(-1, 1, 0, 0);
}
if (game.Keyboard[Key.Q])
{
GL.MatrixMode(MatrixMode.Projection);
GL.Rotate(1, 0, 0, 1);
}
if (game.Keyboard[Key.E])
{
GL.MatrixMode(MatrixMode.Projection);
GL.Rotate(-1, 0, 0, 1);
}
};
game.RenderFrame += (sender, e) =>
{
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
//light
GL.Light(LightName.Light0, LightParameter.Position, new float[] { ligthX, ligthY, lightZ, 1f });
GL.ShadeModel(ShadingModel.Smooth);
Color[] colors = new Color[6];
for (int i = 0; i < colors.Length; i++)
{
colors[i] = Color.White;
}
//DrawCube(0, 2, 0.01f, 2, ligthX - 1f, ligthY + 2f, lightZ - 1f, 15, colors);
GL.Color3(Color.Black);
DrawLine(ligthTopX, size, lightTopZ, ligthX, ligthY, lightZ);
GL.Color3(Color.LightGoldenrodYellow);
Sphere(size / 40f, 15, 15, ligthX, ligthY, lightZ, 0, true);
GL.Disable(EnableCap.Texture2D);
colors = new Color[]
{
Color.Transparent, Color.Orange, Color.DarkSlateBlue, Color.DarkSlateBlue, Color.Sienna, Color.Orange
};
float k = 12f;
GL.Enable(EnableCap.Texture2D);
GL.BindTexture(TextureTarget.Texture2D, earthTexture);
DrawCube(0, size, size, size * 3, 0, 0, 0, 100, colors, false);
GL.Disable(EnableCap.Texture2D);
DrawCube(0, size, size / 25f, size / 10, 0, size - size / 5, 0, 70, colors);
//axes
//GL.Color3(Color.Red);
//GL.Begin(PrimitiveType.Lines);
//GL.Vertex3(0, 0, 0);
//GL.Vertex3(20, 0, 0);
//GL.Color3(Color.Yellow);
//GL.Vertex3(0, 0, 0);
//GL.Vertex3(0, 40, 0);
//GL.Color3(Color.Green);
//GL.Vertex3(0, 0, 0);
//GL.Vertex3(0, 0, 60);
//GL.End();
k = 10;
GL.Enable(EnableCap.Texture2D);
GL.Color3(Color.Transparent);
GL.BindTexture(TextureTarget.Texture2D, current_texture);
Sphere(size / k, 80, 80, size / k + 2, size / k, size / k, 0);
GL.BindTexture(TextureTarget.Texture2D, earthTexture);
Sphere(size / k, 80, 80, size - size / k, size / k, size / k + 2, 0);
GL.Disable(EnableCap.Texture2D);
GL.Enable(EnableCap.Texture2D);
GL.BindTexture(TextureTarget.Texture2D, footBallTextur);
Sphere(size / 12, 60, 60, size / 3 - size / 12, size / 12, size / 2, 0);
GL.Disable(EnableCap.Texture2D);
// GL.Translate(size / 2, size / 2, 0);
GL.Color4(0.2f, 0.7f, 0.7f, 0.4f);
Sphere(size / 6f, 70, 70, size / 2f - size / 6f, size / 2f - size / 6f, size / 2f - size / 6f, 0);
game.SwapBuffers();
};
// Run the game at 60 updates per second
game.Run(60f);
}
static void Main()
{
using (var w = new GameWindow(720, 480, null, "ComGr", GameWindowFlags.Default, DisplayDevice.Default, 4, 0, OpenTK.Graphics.GraphicsContextFlags.ForwardCompatible))
{
int hProgram = 0;
int vaoTriangle = 0;
int[] triangleIndices = null;
int vboTriangleIndices = 0;
double time = 0;
w.Load += (o, ea) =>
{
//set up opengl
GL.Enable(EnableCap.FramebufferSrgb);
GL.ClearColor(0.5f, 0.5f, 0.5f, 0);
//GL.ClearDepth(1);
//GL.Disable(EnableCap.DepthTest);
//GL.DepthFunc(DepthFunction.Less);
//GL.Disable(EnableCap.CullFace);
//load, compile and link shaders
//see https://www.khronos.org/opengl/wiki/Vertex_Shader
var VertexShaderSource = @"
#version 400 core
in vec3 pos;
uniform float time;
out float someFloat;
void main()
{
gl_Position = vec4(pos, 1.0) + vec4(sin(time) * 0.5, cos(time) * 0.5, 0.0, 0.0);
someFloat = pos.x + 0.5;
}
";
var hVertexShader = GL.CreateShader(ShaderType.VertexShader);
GL.ShaderSource(hVertexShader, VertexShaderSource);
GL.CompileShader(hVertexShader);
GL.GetShader(hVertexShader, ShaderParameter.CompileStatus, out int status);
if (status != 1)
{
throw new Exception(GL.GetShaderInfoLog(hVertexShader));
}
//see https://www.khronos.org/opengl/wiki/Fragment_Shader
var FragmentShaderSource = @"
#version 400 core
out vec4 colour;
in float someFloat;
void main()
{
colour = vec4(someFloat, 0.75, 0.0, 1.0);
}
";
var hFragmentShader = GL.CreateShader(ShaderType.FragmentShader);
GL.ShaderSource(hFragmentShader, FragmentShaderSource);
GL.CompileShader(hFragmentShader);
GL.GetShader(hFragmentShader, ShaderParameter.CompileStatus, out status);
if (status != 1)
{
throw new Exception(GL.GetShaderInfoLog(hFragmentShader));
}
//link shaders to a program
hProgram = GL.CreateProgram();
GL.AttachShader(hProgram, hFragmentShader);
GL.AttachShader(hProgram, hVertexShader);
GL.LinkProgram(hProgram);
GL.GetProgram(hProgram, GetProgramParameterName.LinkStatus, out status);
if (status != 1)
{
throw new Exception(GL.GetProgramInfoLog(hProgram));
}
//upload model vertices to a vbo
var triangleVertices = new float[]
{
0.0f, -0.5f, 0.0f,
0.5f, 0.5f, 0.0f,
-0.5f, 0.5f, 0.0f
};
var vboTriangleVertices = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ArrayBuffer, vboTriangleVertices);
GL.BufferData(BufferTarget.ArrayBuffer, triangleVertices.Length * sizeof(float), triangleVertices, BufferUsageHint.StaticDraw);
// upload model indices to a vbo
triangleIndices = new int[] { 0, 1, 2 };
vboTriangleIndices = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ElementArrayBuffer, vboTriangleIndices);
GL.BufferData(BufferTarget.ElementArrayBuffer, triangleIndices.Length * sizeof(int), triangleIndices, BufferUsageHint.StaticDraw);
//set up a vao
vaoTriangle = GL.GenVertexArray();
GL.BindVertexArray(vaoTriangle);
var posAttribIndex = GL.GetAttribLocation(hProgram, "pos");
if (posAttribIndex != -1)
{
GL.EnableVertexAttribArray(posAttribIndex);
GL.BindBuffer(BufferTarget.ArrayBuffer, vboTriangleVertices);
GL.VertexAttribPointer(posAttribIndex, 3, VertexAttribPointerType.Float, false, 0, 0);
}
//check for errors during all previous calls
var error = GL.GetError();
if (error != ErrorCode.NoError)
{
throw new Exception(error.ToString());
}
};
w.UpdateFrame += (o, fea) =>
{
//perform logic
time += fea.Time;
};
w.RenderFrame += (o, fea) =>
{
//clear screen and z-buffer
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
//switch to our shader
GL.UseProgram(hProgram);
var timeUniformIndex = GL.GetUniformLocation(hProgram, "time");
if (timeUniformIndex != -1)
{
GL.Uniform1(timeUniformIndex, (float)time);
}
//model-view-projection matrix (not yet used)
var mvp =
//model
Matrix4.Identity
//view
* Matrix4.LookAt(new Vector3(0, 0, -10), new Vector3(0, 0, 0), new Vector3(0, 1, 0)) //view
//projection
* Matrix4.CreatePerspectiveFieldOfView(45 * (float)(Math.PI / 180d), w.ClientRectangle.Width / (float)w.ClientRectangle.Height, 0.1f, 100f);
//render our model
GL.BindVertexArray(vaoTriangle);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, vboTriangleIndices);
GL.DrawElements(PrimitiveType.Triangles, triangleIndices.Length, DrawElementsType.UnsignedInt, 0);
//display
w.SwapBuffers();
var error = GL.GetError();
if (error != ErrorCode.NoError)
{
throw new Exception(error.ToString());
}
};
w.Resize += (o, ea) =>
{
GL.Viewport(w.ClientRectangle);
};
w.Run();
}
}
public void update()
{
position = new Vector3((float)(Math.Sin(AngleX) * Math.Cos(AngleY) * Depth + offset.X), (float)(Math.Sin(AngleY) * Depth + offset.Y), (float)(Math.Cos(AngleX) * (float)Math.Cos(AngleY) * Depth + offset.Z));
Transfrom = Matrix4.LookAt(position, LookAt, new Vector3(0, 1, 0));
}
