public override void Draw(SceneGraph.Cameras.Camera camera = null)
{
var gl = OpenGL;
if (gl == null)
{
return;
}
// TODO: we must decide what to do about drawing - are
// cameras completely outside of the responsibility of the scene?
// If no camera has been provided, use the current one.
ScientificCamera currentCamera = this.CurrentCamera;
currentCamera.Project(gl, ECameraType.Ortho);
//gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
// Render the root element, this will then render the whole
// of the scene tree.
MyRenderElement(SceneContainer, gl, RenderMode.Design);
// TODO: Adding this code here re-enables textures- it should work without it but it
// doesn't, look into this.
//gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
//gl.Enable(OpenGL.GL_TEXTURE_2D);
gl.Flush();
}
void ScientificVisual3DControl_MouseWheel(object sender, MouseEventArgs e)
{
ScientificCamera camera = this.Scene.CurrentCamera;
//if (camera == null) { return; }
camera.Scale(e.Delta);
ManualRender(this);
}
internal static void SetSceneCameraToUICamera(ScientificVisual3DControl scientificVisual3DControl)
{
ScientificCamera camera = scientificVisual3DControl.Scene.CurrentCamera;
if (camera == null)
{
throw new Exception("this.Scene.CurrentCamera cannot be null.");
}
scientificVisual3DControl.UIScene.CurrentCamera = camera;
scientificVisual3DControl.uiAxis.Camera = camera;
scientificVisual3DControl.CameraRotation.Camera = camera;
}
private void FormPointSpriteStringElement_Load(object sender, EventArgs e)
{
this.camera = new ScientificCamera(CameraTypes.Perspecitive);
this.rotator = new SatelliteRotation(this.camera);
//this.fontElement = new PointSpriteStringElement(this.camera, "A", new SharpGL.SceneGraph.Vertex(0, 0, 0));
//this.fontElement = new PointSpriteStringElement(this.camera, "AA", new SharpGL.SceneGraph.Vertex(0, 0, 0));
//this.fontElement = new PointSpriteStringElement(this.camera, "AAA", new SharpGL.SceneGraph.Vertex(0, 0, 0));
//this.fontElement = new PointSpriteStringElement(this.camera, "AAAA", new SharpGL.SceneGraph.Vertex(0, 0, 0));
//this.fontElement = new PointSpriteStringElement(this.camera, "AAAAA", new SharpGL.SceneGraph.Vertex(0, 0, 0));
//this.fontElement = new PointSpriteStringElement(this.camera, "AAAAAA", new SharpGL.SceneGraph.Vertex(0, 0, 0));
//this.fontElement = new PointSpriteStringElement(this.camera, "AAAAAAA", new SharpGL.SceneGraph.Vertex(0, 0, 0));
//this.fontElement = new PointSpriteStringElement(this.camera, "AAAAAAAA", new SharpGL.SceneGraph.Vertex(0, 0, 0));
this.fontElement = new PointSpriteStringElement(
this.camera, "AAAAAAAAAAAAAAAA", new SharpGL.SceneGraph.Vertex(0, 0, 0));
//this.fontElement = new PointSpriteStringElement(this.camera, "hi text!", new SharpGL.SceneGraph.Vertex(0, 0, 0));
//this.fontElement = new PointSpriteStringElement(this.camera, "qwertyuiop[]", new SharpGL.SceneGraph.Vertex(0, 0, 0));
this.fontElement.Initialize(this.openGLControl.OpenGL);
}
public void Scale(int delta)
{
ScientificCamera camera = this;
//if (camera.CameraType == CameraTypes.Perspecitive)
{
var target2Position = camera.Position - camera.Target;
if (target2Position.Magnitude() < 0.01)
{
target2Position.Normalize();
target2Position.X *= 0.01f;
target2Position.Y *= 0.01f;
target2Position.Z *= 0.01f;
}
var scaledTarget2Position = target2Position * (1 - delta * 0.001f);
camera.Position = camera.Target + scaledTarget2Position;
double lengthDiff = scaledTarget2Position.Magnitude() - target2Position.Magnitude();
// Increase ortho camera's Near/Far property in case the camera's position changes too much.
IPerspectiveCamera perspectiveCamera = camera;
perspectiveCamera.Far += lengthDiff;
//perspectiveCamera.Near += lengthDiff;
IOrthoCamera orthoCamera = camera;
orthoCamera.Far += lengthDiff;
orthoCamera.Near += lengthDiff;
}
//else if (camera.CameraType == CameraTypes.Ortho)
{
IOrthoCamera orthoCamera = camera;
double distanceX = orthoCamera.Right - orthoCamera.Left;
double distanceY = orthoCamera.Top - orthoCamera.Bottom;
double centerX = (orthoCamera.Left + orthoCamera.Right) / 2;
double centerY = (orthoCamera.Bottom + orthoCamera.Top) / 2;
orthoCamera.Left = centerX - distanceX * (1 - delta * 0.001) / 2;
orthoCamera.Right = centerX + distanceX * (1 - delta * 0.001) / 2;
orthoCamera.Bottom = centerY - distanceY * (1 - delta * 0.001) / 2;
orthoCamera.Top = centerX + distanceY * (1 - delta * 0.001) / 2;
}
}
/// <summary>
/// Update camera when resized, model container's bounding box updated, etc.
/// </summary>
public void UpdateCamera()
{
ScientificCamera camera = this.Scene.CurrentCamera;
//if (camera.CameraType == CameraTypes.Perspecitive)
{
IPerspectiveViewCamera perspecitive = camera;
perspecitive.AdjustCamera(this.modelContainer.BoundingBox, this.OpenGL);
}
//else if (camera.CameraType == CameraTypes.Ortho)
{
IOrthoViewCamera orthoCamera = camera;
orthoCamera.AdjustCamera(this.modelContainer.BoundingBox, this.OpenGL);
}
//else
{
//throw new NotImplementedException();
}
//camera.Scale(-camera.scaleFactor);
//// force CameraRotation to udpate.
//this.CameraRotation.Camera = this.Scene.CurrentCamera;
ManualRender(this);
}
/// <summary>
/// Initialises a modeling scene. A modeling scene has:
/// - A 'Look At' camera targetting the centre of the scene
/// - Three gentle omnidirectional lights
/// - A design time grid and axis.
/// </summary>
/// <param name="scene">The scene.</param>
public static void InitialiseModelingScene(ColorCodedPickingScene scene)
{
// Create the 'Look At' camera
var lookAtCamera = new ScientificCamera()
{
Position = new Vertex(-10f, -10f, 10f),
Target = new Vertex(0f, 0f, 0f),
UpVector = new Vertex(0f, 0f, 1f)
};
// Set the look at camera as the current camera.
scene.CurrentCamera = lookAtCamera;
// Add some design-time primitives.
var folder = new Folder()
{
Name = "Design Primitives"
};
folder.AddChild(new Grid());
folder.AddChild(new Axies());
scene.SceneContainer.AddChild(folder);
// Create some lights.
Light light1 = new Light()
{
Name = "Light 1",
On = true,
Position = new Vertex(-9, -9, 11),
GLCode = OpenGL.GL_LIGHT0
};
Light light2 = new Light()
{
Name = "Light 2",
On = true,
Position = new Vertex(9, -9, 11),
GLCode = OpenGL.GL_LIGHT1
};
Light light3 = new Light()
{
Name = "Light 3",
On = true,
Position = new Vertex(0, 15, 15),
GLCode = OpenGL.GL_LIGHT2
};
// Add the lights.
folder = new Folder()
{
Name = "Lights"
};
folder.AddChild(light1);
folder.AddChild(light2);
folder.AddChild(light3);
scene.SceneContainer.AddChild(folder);
// Create a set of scene attributes.
OpenGLAttributesEffect sceneAttributes = new OpenGLAttributesEffect()
{
Name = "Scene Attributes"
};
// Specify the scene attributes.
sceneAttributes.EnableAttributes.EnableDepthTest = true;
sceneAttributes.EnableAttributes.EnableNormalize = true;
sceneAttributes.EnableAttributes.EnableLighting = true;
sceneAttributes.EnableAttributes.EnableTexture2D = true;
sceneAttributes.EnableAttributes.EnableBlend = true;
sceneAttributes.ColorBufferAttributes.BlendingSourceFactor = BlendingSourceFactor.SourceAlpha;
sceneAttributes.ColorBufferAttributes.BlendingDestinationFactor = BlendingDestinationFactor.OneMinusSourceAlpha;
sceneAttributes.LightingAttributes.TwoSided = true;
scene.SceneContainer.AddEffect(sceneAttributes);
}
