地月系3D-OPENGL

使用CSGL开源框架来做这个系统，主要需要注意一些基本调用。这里都已经封装了起来。

此外注意Drawtexture(int index) ，如果里边的GL.glTexParameteri参数不适当，也可能引起无法正常显示的情况。

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Drawing.Imaging;
using CsGL.OpenGL;

namespace USTC
{
class OpenGlTool
{

private uint[] texture;
private uint[] Textures_dispList;

public OpenGlTool(int n)
{

texture = new uint
;
Textures_dispList = new uint
;
GL.glGenTextures(1, texture);
}

///
/// 载?入?第?几?个?索?引?图?
///
/// 文?件?名?
/// 绑?定?UNIT指?针?索?引?，?代?表?第?几?幅?素?材?图?
///
public void loadBit(int index, string fileName)
{

//string fileName = "image/earth.bmp";
GL.glNewList(Textures_dispList[index] = GL.glGenLists(1), GL.GL_COMPILE_AND_EXECUTE);
GL.glBindTexture(GL.GL_TEXTURE_2D, texture[index]);
Bitmap img = new Bitmap(fileName);
Rectangle rect = new Rectangle(0, 0, img.Width, img.Height);
BitmapData tex = img.LockBits(rect, ImageLockMode.ReadOnly,
System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR);
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
GL.glTexImage2D(GL.GL_TEXTURE_2D, 0, (int)GL.GL_RGB8,
img.Width, img.Height,
0, GL.GL_BGRA_EXT, GL.GL_UNSIGNED_BYTE, tex.Scan0);
img.UnlockBits(tex);
GL.glEndList();

//     GL.glTexParameteri(GL.GL_TEXTURE_2D,   GLTexParamPName.TextureMinFilter, GLTextureFilter.Linear);
//     GL.glTexParameteri(GL.GL_TEXTURE_2D,   GLTexParamPName.TextureMagFilter,  GLTextureFilter.Linear);
//绑?定?我?们?之?前?定?义?好?的?纹?理?

//用?于?自?动?纹?理?映?射?的?二?次?曲?面?对?象?

//绘?制?半?径?为?.3 的?球?体?，?同?时?使?用?

}

///
/// 绑?定?UNIT指?针?索?引?，?代?表?第?几?幅?素?材?图?
///
///
public void Drawtexture(int index)
{
GL.glBindTexture(GL.GL_TEXTURE_2D, texture[index]);
//GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP);
// GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP);
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR);
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
//  GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
//   GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR_MIPMAP_NEAREST);
}
public void sunshare()
{
//开?启?光?照?渲?染?
GL.glEnable(GL.GL_LIGHTING);
//设?置?光?源?属?性?
float[] light_ambient = { 0.7F, 0.0F, 0.0F, 1.0F };//R,G,B,ALPHA
float[] light_diffuse = { 0.5F, 0F, 0F, 0.5F };
//指?定?光?源?的?位?置?
float[] light_position = { 0.0F, 0.0F, 10.0F, 1.0F };
//用?定?义?好?的?光?源?属?性?给?指?定?光?源?GL_LIGHT0 进?行?设?置?
GL.glLightfv(GL.GL_LIGHT0, GL.GL_AMBIENT, light_ambient);
GL.glLightfv(GL.GL_LIGHT0, GL.GL_DIFFUSE, light_diffuse);
GL.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, light_position);
//开?启?设?置?的?光?源?GL_LIGHT0
GL.glEnable(GL.GL_LIGHT0);
//镜?面?反?射?
// float[] planet_specular  = { 0.5F , 0.5F , 0.5F , 0.5F };
// GL.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, planet_specular);
//打?开?全?局?光?照?
// GL.glLightModelfv(GL.GL_LIGHT_MODEL_AMBIENT, light_ambient);

}
#region 画?几?何?体?
///
/// 画?正?方?体?
///
public void Esquare()
{

GL.glBegin(GL.GL_QUAD_STRIP);//
GL.glVertex3f(0.0f, 0.0f, 0.0f);//a0点?
GL.glVertex3f(0.0f, 1.0f, 0.0f);//a1点?
GL.glVertex3f(1.0f, 0.0f, 0.0f);//b0点?
GL.glVertex3f(1.0f, 1.0f, 0.0f);//b1点?
GL.glVertex3f(1.0f, 0.0f, -1.0f);//c0点?
GL.glVertex3f(1.0f, 1.0f, -1.0f);//c1点?
GL.glVertex3f(0.0f, 0.0f, -1.0f);//d0点?
GL.glVertex3f(0.0f, 1.0f, -1.0f);//d1点?
GL.glVertex3f(0.0f, 0.0f, 0.0f);//a0点?
GL.glVertex3f(0.0f, 1.0f, 0.0f);//a1点?
GL.glEnd();

GL.glBegin(GL.GL_POLYGON);//
GL.glVertex3f(0.0f, 0.0f, 0.0f);//a0点?
GL.glVertex3f(1.0f, 0.0f, 0.0f);//b0点?
GL.glVertex3f(1.0f, 0.0f, -1.0f);//c0点?
GL.glVertex3f(0.0f, 0.0f, -1.0f);//d0点?
GL.glVertex3f(0.0f, 1.0f, 0.0f);//a1点?
GL.glVertex3f(1.0f, 1.0f, 0.0f);//b1点?
GL.glVertex3f(1.0f, 1.0f, -1.0f);//c1点?
GL.glVertex3f(0.0f, 1.0f, -1.0f);//d1点?
GL.glEnd();
}
#endregion
}
}

调用类：

using System;
using System.Collections.Generic;
using System.Text;
using CsGL.OpenGL;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;
using Exocortex;

namespace Solar_system
{
class SolarSystemView : OpenGLControl
{
private static int year = 0, day = 0, day1 = 0;
USTC.OpenGlTool tool;
GLUquadric g_text = GL.gluNewQuadric();

protected override void InitGLContext()
{
GLU.gluQuadricNormals(g_text, GLU.GLU_SMOOTH);
GLU.gluQuadricOrientation(g_text, GLU.GLU_OUTSIDE);
GLU.gluQuadricTexture(g_text, (byte)GL.GL_TRUE);
GLU.gluQuadricDrawStyle(g_text, GLU.GLU_FILL);
base.InitGLContext();
GL.glEnable(GL.GL_DEPTH_TEST);
GL.glDepthFunc(GL.GL_LESS);

GL.glEnable(GL.GL_BLEND);
GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE);
//GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);

GL.glMatrixMode(GL.GL_MODELVIEW);
GL.glEnable(GL.GL_TEXTURE_2D);
tool = new USTC.OpenGlTool(1);
//如?果?是?多?个?贴?图?，?下?边?将?是?多?个?载?入?loadBit
tool.loadBit(0, "image/earth.bmp");
//sunshare();
}

protected override void OnSizeChanged(EventArgs e)
{
base.OnSizeChanged(e);
//得?到?当?前?屏?幕?尺?寸?
GL.glViewport(0, 0, Size.Width, Size.Height);
GL.glMatrixMode(GL.GL_PROJECTION);
GL.glLoadIdentity();
GL.gluPerspective(60, Size.Width / Size.Height, 1, 30);
GL.glMatrixMode(GL.GL_MODELVIEW);
GL.glLoadIdentity();
GL.gluLookAt(0, 5, 15, 0, 0, 0, 0, 2, 0);
}

public override void glDraw()
{
base.glDraw();

GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);

GL.glEnable(GL.GL_BLEND);

tool.Drawtexture(0);
GL.gluSphere(g_text, 2, 30, 30);//半?径?为?
//绘?制?地?月?系?

GL.glPushMatrix();
GL.glRotated(year, 0, 1, 0);//绕?y轴?转?动?
GL.glTranslated(5, 0, 0);//平?移?个?单?位?
//绘?制?地?球?

GL.glPushMatrix();
GL.glRotated(day, 0, 1, 0);//绕?y轴?转?动?
// GL.glColor3f(0, 0, 1);
tool.Drawtexture(0);

GL.gluSphere(g_text,0.6, 12, 12);
GL.glPopMatrix();

//绘?制?月?球?
GL.glRotated(day1, 0, 1, 0);//绕?y轴?转?动?
GL.glTranslated(1, 0, 0);
GL.glRotated(day1, 0, 1, 0);//绕?y轴?转?动?

GL.glutWireSphere(0.1, 6, 6);
GL.glPopMatrix();
GL.glDisable(GL.GL_BLEND);

year = year > 360 ? (year % 360 + 1) : (year + 1);
day = day > 360 ? (day % 360 + 5) : (day + 5);
day1 = day1 > 360 ? (day1 % 360 + 20) : (day1 + 20);
OnSizeChanged(null);//使?显?示?更?加?流?畅?

}

}
}

调用：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using CsGL.OpenGL;
using Solar_system;

namespace test2
{
public partial class Form1 : Form
{
private static Thread thrDraw;
private SolarSystemView view;

public Form1()
{
InitializeComponent();
CheckForIllegalCrossThreadCalls = false;
this.view = new SolarSystemView();
this.view.Parent = this;

this.view.Dock = System.Windows.Forms.DockStyle.Fill;

//this.Controls.Add(this.view);

}

private void OpenGL_Start()
{
while (true)
{
this.view.Refresh();
Thread.Sleep(80);
}

}

private void Form1_Load(object sender, EventArgs e)
{
ThreadStart start = new ThreadStart(OpenGL_Start);
thrDraw = new Thread(start);
thrDraw.Start();
}

}
}