计算机图形学课程设计报告

1、计算机图形学课程设计报告 设计题目：钟表 班级学号： 姓 名： 日 期：2011.12.19 钟表 1 内容概述主要完成3d时钟 矩形框架的制作，以及各种3d图贴图的绘制，实现对指定形体的旋转。2 工程的框架结构 2.1 添加的菜单 mydraw 绘制图形 ontimer 指针旋转 2.2 使用到的变量 类型 名称 float rangx float rangy float rangz float bcolor float gcolor 2.3 使用到的主要函数 名称 作用 参数 glgentextures 创建纹理 textureglbindtexture 线形滤波 texturegltex

2、parameteri 线形滤波 byteglenable 启用纹理映射 texture glclearcolor 黑色背景 fglenable 启用深度测试 texturegldepthfunc 所作深度测试的类型 lequalglhint 真正精细的透视修正 hint nicestglclear 清除屏幕和深度缓存 bitglloadidentity 重置当前的模型观察矩阵 voidglbindtexture 选择纹理 textureglbegin 前面 quadsgltexcoord2f 指定纹理的坐标 float glvertex 确定顶点的坐标，点与点的关系 glend(); 表示画图

3、结束 quads glrotated 把坐标轴的视角进行偏移 angle glbegin 表示图形开始 quads glpopmatrix 栈里的出栈 glmatrixmode 指定哪一个矩阵是当前矩阵 projection glloadidentity 视场调节3 主要的算法1.创建纹理存储空间static bool bbusy=false;if(bbusy) return;bbusy=true;aux_rgbimagerec *textureimage1; gluint texture1; char *filename=1.bmp;2.创建六个纹理，使用来自位图的数据创建贴图glbegin

4、(gl_quads);gltexcoord2f(0.0f, 0.0f);glvertex3f(-0.5f, 0.65f, 0.0f);gltexcoord2f(0.0f, -1.0f);glvertex3f(-0.5f, -0.65f, 0.0f);gltexcoord2f(1.0f, -1.0f);glvertex3f( 0.5f, -0.65f, 0.0f);gltexcoord2f(1.0f, 0.0f);glvertex3f(0.5f, 0.65f, 0.0f);glend();3. 表针的定义和旋转glrotated(-rangz,0.0f,0.0f,3.0f);glbegin(gl

5、_lines);glvertex3f(0.0f,-0.0f,0.0f);glvertex3f(0.13f,0.25f,0.0f);glend();glrotated(-rangx,0.0f,0.0f,3.0f);glbegin(gl_lines);glvertex3f(0.0f,-0.0f,0.0f);glvertex3f(0.2f,0.3f,0.0f);glend();glrotated(-rangy,0.0f,0.0f,1.0f);glbegin(gl_lines);glvertex3f(0.0f,-0.0f,0.0f);glvertex3f(-0.02f,-0.2f,0.0f);glve

6、rtex3f(0.0f,-0.0f,0.0f);glvertex3f(0.02f,-0.2f,0.0f);glvertex3f(-0.02f,-0.2f,0.0f);glvertex3f(-0.0f,-0.4f,0.0f);glvertex3f(0.02f,-0.2f,0.0f);glvertex3f(0.0f,-0.4f,0.0f);glvertex3f(0.0f,-0.0f,0.0f);glvertex3f(-0.01f,0.1f,0.0f);glvertex3f(0.0f,-0.0f,0.0f);glvertex3f(0.01f,0.1f,0.0f); glvertex3f(-0.01f

7、,0.1f,0.0f);glvertex3f(-0.f,0.2f,0.0f); glvertex3f(0.01f,0.1f,0.0f);glvertex3f(0.0f,0.2f,0.0f);glend(); 4. 用settimer设置2个定时器，周期不同settimer(1,1000, null);settimer(2,60000, null);hwnd hwnd = this-getsafehwnd(); hdc hdc = :getdc(hwnd); if(this-setwindowpixelformat(hdc)=false) return 0; if(this-createview

8、glcontext(hdc)=false) return 0; return 0;5. 用ontimer()函数响应用settimer()函数设定的定时器void cglview:ontimer(uint nidevent) switch(nidevent)case 1:if(rangy=360.0f)rangy=0.1f;elserangy=rangy+6.0f;break;case 2:if(rangz=360.0f)rangz=0.1f;elserangz=rangz+0.1f;break;this-invalidate(false);cview:ontimer(nidevent);4

9、效果展示完整的时钟体现 5 详细的代码/ glview.cpp : implementation of the cglview class/#include stdafx.h#include gl.h#include / glaux库的头文件#include gldoc.h#include glview.h#ifdef _debug#define new debug_new#undef this_filestatic char this_file = _file_;#endif/ cglviewimplement_dyncreate(cglview, cview)begin_message_m

10、ap(cglview, cview)/afx_msg_map(cglview)on_wm_create()on_wm_destroy()on_wm_size()on_wm_timer()/afx_msg_map/ standard printing commandson_command(id_file_print, cview:onfileprint)on_command(id_file_print_direct, cview:onfileprint)on_command(id_file_print_preview, cview:onfileprintpreview)end_message_m

11、ap()/ cglview construction/destructioncglview:cglview()/ todo: add construction code herethis-m_glpixelindex = 0; this-m_hglcontext = null; rangx=0.0f;rangy=0.0f;rangz=0.0f;int mark=-1;for(int i=0;i100;i+)for(int j=0;jsizex, textureimage0-sizey, 0, gl_rgb, gl_unsigned_byte, textureimage0-data); glte

12、xparameteri(gl_texture_2d,gl_texture_min_filter,gl_linear); / 线形滤波 gltexparameteri(gl_texture_2d,gl_texture_mag_filter,gl_linear); / 线形滤波 glenable(gl_texture_2d); / 启用纹理映射( 新增 ) / 启用阴影平滑 glclearcolor(0.3f, 0.0f, 0.2f, 0.5f); / 黑色背景 / 设置深度缓存 glenable(gl_depth_test); / 启用深度测试 gldepthfunc(gl_lequal); /

13、 所作深度测试的类型 glhint(gl_perspective_correction_hint, gl_nicest); / 真正精细的透视修正 glclear(gl_color_buffer_bit | gl_depth_buffer_bit); / 清除屏幕和深度缓存 glloadidentity(); / 重置当前的模型观察矩阵 glbindtexture(gl_texture_2d, texture0); / 选择纹理/glcolor3f(1.0f,1.0f,1.0f);glbegin(gl_quads);/ 前面 gltexcoord2f(0.0f, 0.0f);glvertex3

14、f(-0.5f, 0.65f, 0.0f); / 纹理和四边形的左下 gltexcoord2f(0.0f, -1.0f);glvertex3f(-0.5f, -0.65f, 0.0f);/ 纹理和四边形的右下 gltexcoord2f(1.0f, -1.0f);glvertex3f( 0.5f, -0.65f, 0.0f);/ 纹理和四边形的右上 gltexcoord2f(1.0f, 0.0f);glvertex3f(0.5f, 0.65f, 0.0f);/ 纹理和四边形的左上 / 后面 glend();glcolor3f(0.5f,0.2f,0.8f); glrotated(-rangz,0

15、.0f,0.0f,3.0f);glbegin(gl_lines);glvertex3f(0.0f,-0.0f,0.0f);glvertex3f(0.13f,0.25f,0.0f);glend();glrotated(-rangx,0.0f,0.0f,3.0f);glbegin(gl_lines);glvertex3f(0.0f,-0.0f,0.0f);glvertex3f(0.2f,0.3f,0.0f);glend();glrotated(-rangy,0.0f,0.0f,1.0f);glbegin(gl_lines);glvertex3f(0.0f,-0.0f,0.0f);glvertex3

16、f(-0.02f,-0.2f,0.0f);glvertex3f(0.0f,-0.0f,0.0f);glvertex3f(0.02f,-0.2f,0.0f);glvertex3f(-0.02f,-0.2f,0.0f);glvertex3f(-0.0f,-0.4f,0.0f);glvertex3f(0.02f,-0.2f,0.0f);glvertex3f(0.0f,-0.4f,0.0f);glvertex3f(0.0f,-0.0f,0.0f);glvertex3f(-0.01f,0.1f,0.0f);glvertex3f(0.0f,-0.0f,0.0f);glvertex3f(0.01f,0.1f

17、,0.0f);glvertex3f(-0.01f,0.1f,0.0f);glvertex3f(-0.f,0.2f,0.0f);glvertex3f(0.01f,0.1f,0.0f);glvertex3f(0.0f,0.2f,0.0f);glend(); elsemessagebox(文件不存在);mydraw();swapbuffers(wglgetcurrentdc();bbusy=false;/cglview printingbool cglview:onprepareprinting(cprintinfo* pinfo)/ default preparationreturn doprep

18、areprinting(pinfo);void cglview:onbeginprinting(cdc* /*pdc*/, cprintinfo* /*pinfo*/)/ todo: add extra initialization before printingvoid cglview:onendprinting(cdc* /*pdc*/, cprintinfo* /*pinfo*/)/ todo: add cleanup after printing/cglview diagnostics#ifdef _debugvoid cglview:assertvalid() constcview:

19、assertvalid();void cglview:dump(cdumpcontext& dc) constcview:dump(dc);cgldoc* cglview:getdocument() / non-debug version is inlineassert(m_pdocument-iskindof(runtime_class(cgldoc);return (cgldoc*)m_pdocument;#endif /_debug/ cglview message handlersbool cglview:setwindowpixelformat(hdc hdc)/定义窗口的像素格式p

20、ixelformatdescriptor pixeldesc= sizeof(pixelformatdescriptor),1,pfd_draw_to_window|pfd_support_opengl|pfd_doublebuffer,pfd_type_rgba,24,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,pfd_main_plane,0,0,0,0; this-m_glpixelindex = choosepixelformat(hdc,&pixeldesc); if(this-m_glpixelindex=0) this-m_glpixelindex = 1;

21、 if(describepixelformat(hdc,this-m_glpixelindex,sizeof(pixelformatdescriptor),&pixeldesc)=0) return false;if(setpixelformat(hdc,this-m_glpixelindex,&pixeldesc)=false) return false; return true;bool cglview:createviewglcontext(hdc hdc)this-m_hglcontext = wglcreatecontext(hdc); if(this-m_hglcontext=nu

22、ll)/创建失败 return false; if(wglmakecurrent(hdc,this-m_hglcontext)=false)/选为当前rc失败 return false;return true;int cglview:oncreate(lpcreatestruct lpcreatestruct) if (cview:oncreate(lpcreatestruct) = -1)return -1;/ todo: add your specialized creation code heresettimer(1,1000, null);settimer(2,60000, null)

23、;hwnd hwnd = this-getsafehwnd(); hdc hdc = :getdc(hwnd); if(this-setwindowpixelformat(hdc)=false) return 0; if(this-createviewglcontext(hdc)=false) return 0; return 0;void cglview:ondestroy() cview:ondestroy();/ todo: add your message handler code here if(wglgetcurrentcontext()!=null) wglmakecurrent

24、(null,null); if(this-m_hglcontext!=null) wgldeletecontext(this-m_hglcontext); this-m_hglcontext = null; void cglview:mydraw()gltranslatef(0.0f,0.3f,-6.0f);glenable(gl_line_stipple);glenable(gl_point_smooth);glpushmatrix(); glend();glrotated(rangx,0.0f,0.0f,3.0f);glbegin(gl_lines);glend(); glrotated(

25、rangy,0.0f,0.0f,3.0f);glcolor3f(1.0f,1.0f,1.0f);glbegin(gl_lines);glvertex3f(0.0f,-0.0f,0.3f);glvertex3f(-0.05f,-0.25f,0.3f);glvertex3f(0.0f,-0.0f,0.3f);glvertex3f(0.05f,-0.25f,0.3f);glvertex3f(-0.05f,-0.25f,0.3f);glvertex3f(-0.f,-0.5f,0.3f);glvertex3f(0.05f,-0.25f,0.3f);glvertex3f(0.0f,-0.5f,0.3f);

26、glvertex3f(0.0f,-0.0f,0.3f);glvertex3f(-0.05f,0.2f,0.3f);glvertex3f(0.0f,-0.0f,0.3f);glvertex3f(0.05f,0.2f,0.3f);glvertex3f(-0.05f,0.2f,0.3f);glvertex3f(-0.f,0.3f,0.3f);glvertex3f(0.05f,0.2f,0.3f);glvertex3f(0.0f,0.3f,0.3f);glend(); glpopmatrix(); gldisable(gl_point_smooth);glvertex3f(0.0f,-0.05f,0.0f);glvertex3f(-0.2f,-0.1f,0.3f);gldisable(gl_line_stipple);void cglview:o