// initialize
public void Init()
{
screen.Print("Move: UP, DOWN, LEFT, RIGHT", 10, 10, 10);
// load teapot
mesh = new Mesh("../../assets/teapot.obj");
floor = new Mesh("../../assets/floor.obj");
eye = new Mesh("../../assets/eyeball.obj");
moon = new Mesh("../../assets/moon.obj");
earth = new Mesh("../../assets/earth.obj");
jet = new Mesh("../../assets/jet.obj");
// initialize stopwatch
timer = new Stopwatch();
timer.Reset();
timer.Start();
// create shaders
shader = new Shader("../../shaders/vs.glsl", "../../shaders/fs.glsl");
// load a texture
wood = new Texture("../../assets/wood.jpg");
eyeR = new Texture("../../assets/ref1.jpg");
crater = new Texture("../../assets/crater.jpg");
land = new Texture("../../assets/land.jpg");
stars = new Texture("../../assets/stars.jpg");
jetp = new Texture("../../assets/jetp.png");
//add light
int lightID = GL.GetUniformLocation(shader.programID, "lightPos");
GL.UseProgram(shader.programID);
GL.Uniform3(lightID, 0f, 10f, 0.0f);
//add camera position
Tc = Matrix4.CreateTranslation(new Vector3(0, -25.5f, 0)) * Matrix4.CreateFromAxisAngle(new Vector3(1, 0, 0), PI / 2);
Vector4 c = Tc * (new Vector4(0f, 0f, 0f, 1f));
int cameraID = GL.GetUniformLocation(shader.programID, "cPos");
GL.UseProgram(shader.programID);
GL.Uniform4(cameraID, c);
//create scenegraph
meshes = new scenegraph(floor, Matrix4.CreateScale(6.0f) * Matrix4.CreateFromAxisAngle(new Vector3(0, 1, 0), 0), stars, shader);
meshes.addNode(mesh, Matrix4.CreateScale(0.5f) * Matrix4.CreateFromAxisAngle(new Vector3(0, 1, 0), 0), wood, shader);
meshes.getChildren()[0].addNode(mesh, Matrix4.CreateScale(0.5f) * Matrix4.CreateTranslation(new Vector3(5, 0, 0)) * Matrix4.CreateFromAxisAngle(new Vector3(0, 1, 0), 0), wood, shader);
meshes.getChildren()[0].getChildren()[0].addNode(mesh, Matrix4.CreateScale(0.25f) * Matrix4.CreateTranslation(new Vector3(8, 0, 0)) * Matrix4.CreateFromAxisAngle(new Vector3(0, 1, 0), 0), wood, shader);
}
// tick for OpenGL rendering code
public void RenderGL()
{
screen.Print("Camera Move: UP, DOWN, LEFT, RIGHT", 2, 2, 0xffff00);
screen.Print("Rotate: MOUSE LEFT, MOUSE RIGHT", 2, 32, 0xffff00);
// measure frame duration
float frameDuration = timer.ElapsedMilliseconds;
timer.Reset();
timer.Start();
// prepare matrix for vertex shader
float angle90degrees = PI / 2;
Matrix4 Tpot = Matrix4.CreateScale(0.2f) * Matrix4.CreateFromAxisAngle(new Vector3(0, 1, 0), a);
Matrix4 Tplane1 = Matrix4.CreateScale(0.25f) * Matrix4.CreateFromAxisAngle(new Vector3(0, 1, 0), -15 * a) * Matrix4.CreateTranslation(new Vector3(10, 0, 8));
Matrix4 Tfloor = Matrix4.CreateScale(6.0f) * Matrix4.CreateFromAxisAngle(new Vector3(0, 1, 0), 0);
Matrix4 Tplane2 = Matrix4.CreateScale(0.25f) * Matrix4.CreateTranslation(new Vector3(15, 0, 0)) * Matrix4.CreateFromAxisAngle(new Vector3(0, 1, 0), -30 * a);
Matrix4 toWorld = Tfloor;
Matrix4 Tcamera = Matrix4.CreateTranslation(new Vector3(0, -25.5f, 0)) * Matrix4.CreateFromAxisAngle(new Vector3(1, 0, 0), angle90degrees);
Matrix4 Tview = Matrix4.CreatePerspectiveFieldOfView(1.2f, 1.3f, .1f, 1000);
//change transforms
meshes.localT = Tfloor;
meshes.getChildren()[0].localT = Tpot;
meshes.getChildren()[0].getChildren()[0].localT = Tplane1;
meshes.getChildren()[0].getChildren()[0].getChildren()[0].localT = Tplane2;
// update rotation
a += 0.0001f * frameDuration;
if (a > 2 * PI)
{
a -= 2 * PI;
}
//render via scenegraph
meshes.Render(Tmove * Tcamera * Tview, toWorld, Tmove);
// render scene
//mesh.Render(shader, Tpot * Tcamera * Tview, wood);
//floor.Render(shader, Tfloor * Tcamera * Tview, wood);
}