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//
// HelloCube.cs
//
// Author:
// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
//
// Copyright (c) 2016 jp
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
using System;
using OpenTK;
using OpenTK.Graphics.OpenGL;
using Crow;
namespace Tests
{
class Hello3D : CrowWindow
{
[STAThread]
static void Main ()
{
Hello3D win = new Hello3D ();
win.Run (30);
}
public Hello3D ()
: base(800, 600,"Crow Test with OpenTK")
{
}
public Matrix4 modelview, projection;
public int[] viewport = new int[4];
public Vector3 vEyeTarget = new Vector3(0f, 0f, 0f);
public Vector3 vEye;
public Vector3 vLookInit = Vector3.Normalize(new Vector3(-1.0f, -1.0f, 1.0f));
public Vector3 vLook; // Camera vLook Vector
public float zNear = 0.001f, zFar = 300.0f;
public float fovY = (float)Math.PI / 4;
public float eyeDist = 10.2f;
public float viewZangle, viewXangle;
public const float MoveSpeed = 0.02f;
public const float RotationSpeed = 0.005f;
public const float ZoomSpeed = 0.22f;
vaoMesh cube;
Texture texture;
ProjectiveIFaceControler iface3D;
void initGL(){
GL.Enable (EnableCap.CullFace);
GL.Enable (EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
cube = vaoMesh.CreateCube ();
texture = new Texture ("image/textest.png");
}
protected override void OnLoad (EventArgs e)
{
base.OnLoad (e);
MouseMove += HelloCube_MouseMove;
MouseWheelChanged += Hello3D_MouseWheelChanged;
iface3D = Add3DInterface (2048, 2048,
Matrix4.CreateScale (6f) *
Matrix4.CreateRotationX (MathHelper.PiOver2) *
Matrix4.CreateTranslation (Vector3.UnitY * -1.1f));
Load (@"Interfaces/Divers/0.crow").DataSource = this;
initGL ();
shader.Enable ();
}
protected override void OnResize (EventArgs e)
{
base.OnResize (e);
UpdateViewMatrix ();
}
public override void OnRender (FrameEventArgs e)
{
base.OnRender (e);
shader.SetMVP(modelview * projection);
GL.BindTexture (TextureTarget.Texture2D, texture);
cube.Render (BeginMode.Triangles);
GL.BindTexture (TextureTarget.Texture2D, 0);
}
public void UpdateViewMatrix()
{
Rectangle r = this.ClientRectangle;
GL.Viewport( r.X, r.Y, r.Width, r.Height);
projection = Matrix4.CreatePerspectiveFieldOfView (fovY, r.Width / (float)r.Height, zNear, zFar);
vLook = vLookInit.Transform(
Matrix4.CreateRotationX (viewXangle)*
Matrix4.CreateRotationZ (viewZangle));
vLook.Normalize();
vEye = vEyeTarget + vLook * eyeDist;
modelview = Matrix4.LookAt(vEye, vEyeTarget, Vector3.UnitZ);
GL.GetInteger(GetPName.Viewport, viewport);
iface3D.UpdateView (projection, modelview, viewport, vEye);
}
void HelloCube_MouseMove(object sender, OpenTK.Input.MouseMoveEventArgs otk_e)
{
if (otk_e.Mouse.MiddleButton == OpenTK.Input.ButtonState.Pressed) {
viewZangle -= (float)otk_e.XDelta * RotationSpeed;
viewXangle -= (float)otk_e.YDelta * RotationSpeed;
UpdateViewMatrix ();
} else if (otk_e.Mouse.LeftButton == OpenTK.Input.ButtonState.Pressed) {
return;
} else if (otk_e.Mouse.RightButton == OpenTK.Input.ButtonState.Pressed) {
Vector2 v2Look = vLook.Xy.Normalized ();
Vector2 disp = v2Look.PerpendicularLeft * otk_e.XDelta * MoveSpeed +
v2Look * otk_e.YDelta * MoveSpeed;
vEyeTarget += new Vector3 (disp.X, disp.Y, 0);
UpdateViewMatrix ();
}
}
void Hello3D_MouseWheelChanged (object sender, OpenTK.Input.MouseWheelEventArgs e)
{
float speed = ZoomSpeed;
if (Keyboard[OpenTK.Input.Key.ControlLeft])
speed *= 20.0f;
eyeDist -= e.Delta * speed;
if (eyeDist < zNear)
eyeDist = zNear;
else if (eyeDist > zFar)
eyeDist = zFar;
UpdateViewMatrix ();
}
}
}
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