1.Camera用来观察我们创建的对象，它的使用方法和组织方式有点类似SceneNode。基本上我们可以将其视为特殊的SceneNode。同样需要设置Position属性来确定方位。
2.如果我们想要设置Camera的渲染范围，也就是说某个物体在多近（远）的距离就看不见了，可以设置Camera.NearClipDistance或者Camera.FarClipDistance。
3.当有了Camera对象，我们如何告诉窗体使用哪个Camera？（因为我们可以在一个窗体中创建多个Camera对象）这个时侯我们需要Viewport对象。Viewport = this.RenderWindow.AddViewport(Camera)
4.当我们在屏幕上绘制了物体，也设定了观察Camera，此时我们还是不能看到物体，原因在于没有光。因此我们需要设定一些光源Light，来照亮物体。
5.有了光源，当光线照在物体上的时候，就会差生阴影，我们也可以设定阴影的显示。例如：mgr.ShadowTechnique = ShadowTechnique.SHADOWTYPE_STENCIL_ADDITIVE;
参考代码：
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using MogreFramework;
using Mogre;
namespace Tutorial02
{
static class Program
{
[STAThread]
static void Main()
{
try
{
MyOgreWindow win = new MyOgreWindow();
new SceneCreator(win);
win.Go();
}
catch (System.Runtime.InteropServices.SEHException)
{
if (OgreException.IsThrown)
MessageBox.Show(OgreException.LastException.FullDescription, "An Ogre exception has occurred!");
else
throw;
}
}
}
class MyOgreWindow : OgreWindow
{
protected override void CreateCamera()
{
Camera = this.SceneManager.CreateCamera("PlayerCam");
Camera.Position = new Vector3(0, 10, 500);
Camera.LookAt(Vector3.ZERO);
Camera.NearClipDistance = 5;
}
protected override void CreateViewport()
{
Viewport = this.RenderWindow.AddViewport(Camera);
Viewport.BackgroundColour = ColourValue.Black;
Camera.AspectRatio = (float)Viewport.ActualWidth / Viewport.ActualHeight;
}
}
class SceneCreator
{
public SceneCreator(OgreWindow win)
{
win.SceneCreating += new OgreWindow.SceneEventHandler(SceneCreating);
}
void SceneCreating(OgreWindow win)
{
// Set the ambient light and shadow technique
SceneManager mgr = win.SceneManager;
mgr.SetShadowUseInfiniteFarPlane(false);
mgr.AmbientLight = ColourValue.Black;
mgr.ShadowTechnique = ShadowTechnique.SHADOWTYPE_STENCIL_ADDITIVE;
// Create a ninja
Entity ent = mgr.CreateEntity("ninja", "ninja.mesh");
ent.CastShadows = true;
mgr.RootSceneNode.CreateChildSceneNode().AttachObject(ent);
// Define a ground plane
Plane plane = new Plane(Vector3.UNIT_Y, 0);
MeshManager.Singleton.CreatePlane("ground", ResourceGroupManager.DEFAULT_RESOURCE_GROUP_NAME,
plane, 1500, 1500, 20, 20, true, 1, 5, 5, Vector3.UNIT_Z);
// Create a ground plane
ent = mgr.CreateEntity("GroundEntity", "ground");
mgr.RootSceneNode.CreateChildSceneNode().AttachObject(ent);
ent.SetMaterialName("Examples/Rockwall");
ent.CastShadows = false;
// Create the first light
Light light;
light = mgr.CreateLight("Light1");
light.Type = Light.LightTypes.LT_POINT;
light.Position = new Vector3(0, 150, 250);
light.DiffuseColour = ColourValue.Red;
light.SpecularColour = ColourValue.Red;
// Create the second light
light = mgr.CreateLight("Light2");
light.Type = Light.LightTypes.LT_DIRECTIONAL;
light.DiffuseColour = new ColourValue(.25f, .25f, 0);
light.SpecularColour = new ColourValue(.25f, .25f, 0);
light.Direction = new Vector3(0, -1, -1);
// Create the third light
light = mgr.CreateLight("Light3");
light.Type = Light.LightTypes.LT_SPOTLIGHT;
light.DiffuseColour = ColourValue.Blue;
light.SpecularColour = ColourValue.Blue;
light.Direction = new Vector3(-1, -1, 0);
light.Position = new Vector3(300, 300, 0);
light.SetSpotlightRange(new Degree(35), new Degree(50));
}
}
}