OpenGL.rar_OpenGL 线框_opengl 线框消隐

/* 这是一个数组创建图形的程序 */ //#include <windows.h> #include "glee.h" //#include <gl/gl.h> //#include <gl/glu.h> #include <gl/glaux.h> #include <glut.h> #include <math.h> #include <stdio.h> #include "math3d.h" HDC hDC=NULL; HGLRC hRC=NULL; HWND hWnd=NULL; HINSTANCE hInstance; GLUquadricObj * quadShape; bool keys[256]; //全局的BOOL默认为0 bool active=TRUE; bool fullscreen=TRUE; int iState = 0; //场景状态 float material_ambient[4] = {1.0f,0.0f,0.0f,1.0f}; float material_diffuse[4] = {1.0f,1.0f,0.0f,1.0f}; float material_shiness[4] = {1.0f,1.0f,1.0f,1.0f}; GLfloat ambientLight[] = { 0.2f, 0.2f, 0.2f, 1.0f}; GLfloat diffuseLight[] = { 0.7f, 0.7f, 0.7f, 1.0f}; GLfloat noLight[] = { 0.0f, 0.0f, 0.0f, 1.0f}; GLfloat lightPos[] = { -50.0f, 80.0f, 100.0f, 1.0f}; float cameraPos[4] = {50.0f,80.0f,100.0f,1.0f}; float cameraZoom = 0.3f; float nfactor = 4.0f; M3DMatrix44f fMatrix; unsigned int shadowTextureID; unsigned int texturePlane; unsigned int textureSphere; unsigned int textureJingse; LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); AUX_RGBImageRec *LoadBMP(CHAR *Filename) // 载入位图图象 { FILE *File=NULL; // 文件句柄 if (!Filename) // 确保文件名已提供 { return NULL; // 如果没提供，返回 NULL } File=fopen(Filename,"r"); // 尝试打开文件 if (File) // 文件存在么? { fclose(File); // 关闭句柄 return auxDIBImageLoadA(Filename); // 载入位图并返回指针 } return NULL; // 如果载入失败，返回 NULL } int LoadGLTextures() // 载入位图(调用上面的代码)并转换成纹理 { int Status=FALSE; // 状态指示器 AUX_RGBImageRec *TextureImage[3]; // 创建纹理的存储空间 memset(TextureImage,0,sizeof(void *)*1); // 将指针设为 NULL // 载入位图，检查有无错误，如果位图没找到则退出 if (TextureImage[0]=LoadBMP("Data/Cube.bmp")) { Status=TRUE; // 将 Status 设为 TRUE glGenTextures(1, &texturePlane); // 创建纹理 glBindTexture(GL_TEXTURE_2D,texturePlane); // 生成纹理 glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data); glTexParameteri(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 delete[] TextureImage[0]->data; // 释放纹理图像占用的内存 delete[] TextureImage[0]; } if (TextureImage[1]=LoadBMP("Data/lanqiu.bmp")) { Status=TRUE; // 将 Status 设为 TRUE glGenTextures(1, &textureSphere); // 创建纹理 glBindTexture(GL_TEXTURE_2D,textureSphere); // 生成纹理 glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[1]->sizeX, TextureImage[1]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[1]->data); glTexParameteri(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 delete[] TextureImage[1]->data; // 释放纹理图像占用的内存 delete[] TextureImage[1]; } if (TextureImage[2]=LoadBMP("Data/jingse.bmp")) { Status=TRUE; // 将 Status 设为 TRUE glGenTextures(1, &textureJingse); // 创建纹理 glBindTexture(GL_TEXTURE_2D,textureJingse); // 生成纹理 glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[2]->sizeX, TextureImage[2]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[2]->data); glTexParameteri(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 delete[] TextureImage[2]->data; // 释放纹理图像占用的内存 delete[] TextureImage[2]; } return Status; // 返回 Status } GLvoid SetWorld(bool IfPlane) { glColor3f(1.0f,1.0f,1.0f); if(IfPlane) { glNormal3f(0.0f,1.0f,0.0f); glBegin(GL_QUADS); glVertex3f( 50.0f,0.0f,-50.0f); glVertex3f(-50.0f,0.0f,-50.0f); glVertex3f(-50.0f,0.0f, 50.0f); glVertex3f( 50.0f,0.0f, 50.0f); glEnd(); } //圆柱体 -20,10,0 glColor3f(1.0f,0.0f,0.0f); glPushMatrix(); glTranslatef(-20.0f,20.0f,0.0f); glRotatef(90.0f,1.0f,0.0f,0.0f); gluCylinder(quadShape,5.0f,5.0f,20.0f,36,36); glPopMatrix(); //圆体 20,10,0 glColor3f(0.0f,1.0f,0.0f); glPushMatrix(); glTranslatef( 20.0f,10.0f,0.0f); gluSphere(quadShape,10.0f,36,36); glPopMatrix(); //圆锥体 0,0,0 glColor3f(1.0f,0.0f,1.0f); glPushMatrix(); glRotatef(-90.0f,1.0f,0.0f,0.0f); gluCylinder(quadShape,5.0f,0.0f,20.0f,36,36); glPopMatrix(); //立方体 0,10,20 glColor3f(1.0f,1.0f,0.0f); glPushMatrix(); glTranslatef( 0.0f,10.0f,20.0f); auxSolidCube(10.0f); glPopMatrix(); } GLvoid ReSizeGLScene(GLsizei width, GLsizei height) { if (height==0) { height=1; } glViewport(0,0,width,height); glMatrixMode(GL_PROJECTION); glLoadIdentity(); GLdouble ar = (GLdouble)width / (GLdouble)height; glFrustum(-ar * cameraZoom, ar * cameraZoom, -cameraZoom, cameraZoom, 1.0, 1000.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); } int InitGL(GLvoid) { quadShape = gluNewQuadric(); gluQuadricNormals(quadShape,GLU_SMOOTH); gluQuadricTexture(quadShape,GL_TRUE); glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LEQUAL); glPolygonOffset(nfactor,0.0f); glShadeModel(GL_SMOOTH); glEnable(GL_COLOR_MATERIAL); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glEnable(GL_NORMALIZE); LoadGLTextures(); glGenTextures(1,&shadowTextureID); glBindTexture(GL_TEXTURE_2D,shadowTextureID); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_DEPTH_TEXTURE_MODE, GL_INTENSITY); glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_COMPARE_FAIL_VALUE_ARB,0.5f); glTexGeni(GL_S,GL_TEXTURE_GEN_MODE,GL_EYE_LINEAR); glTexGeni(GL_T,GL_TEXTURE_GEN_MODE,GL_EYE_LINEAR); glTexGeni(GL_R,GL_TEXTURE_GEN_MODE,GL_EYE_LINEAR); glTexGeni(GL_Q,GL_TEXTURE_GEN_MODE,GL_EYE_LINEAR); // glEnable(GL_COLORMATERIAL); //生成深度纹理图 //场景与深度纹理图进行比较 //绘制场景 { GLfloat lightToSceneDistance; //光源到屏幕距离 GLfloat nearPlane; //近剪切面 GLfloat fieldOfView; //视觉领 GLfloat lightView[16],lightProjection[16]; //基于光源的透视图 GLfloat sR = 95.0f; //场景中物体范围 lightToSceneDistance = sqrt(lightPos[0]*lightPos[0]+lightPos[1]*lightPos[1]+lightPos[2]*lightPos[2]); nearPlane = lightToSceneDistance - sR; //保证场景全部贴满深度图 fieldOfView = (GLfloat)m3dRadToDeg(2.0f*atan(sR/lightToSceneDistance)); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(fieldOfView,1.0f,nearPlane,nearPlane+(2.0f * sR)); glGetFloatv(GL_PROJECTION_MATRIX,lightProjection); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); gluLookAt(lightPos[0],lightPos[1],lightPos[2], 0.0f,0.0f,0.0f,0.0f,1.0f,0.0f); glGetFloatv(GL_MODELVIEW_MATRIX ,lightView); glViewport(0,0,640,480); glClear(GL_DEPTH_BUFFER_BIT); glShadeModel(GL_FLAT); glDisable(GL_LIGHTING); glDisable(GL_COLOR_MATERIAL); glDisable(GL_NORMALIZE); glColorMask(0,0,0,0); glEnable(GL_POLYGON_OFFSET_FILL); SetWorld(false); glCopyTexImage2D(GL_TEXTURE_2D,0,GL_DEPTH_COMPONENT,0,0,640,480,0); glShadeModel(GL_SMOOTH); glEnable(GL_LIGHTING); glEnable(GL_COLOR_MATERIAL); glEnable(GL_NORMALIZE); glColorMask(1,1,1,1); glDisable(GL_POLYGON_OFFSET_FILL); M3DMatrix44f fMatrixs; m3dLoadIdentity44(fMatrixs); m3dTranslateMatrix44(fMatrixs,0.5f,0.5f,0.5f); m3dScaleMatrix44(fMatrixs,0.5f,0.5f,0.5f); m3dMatrixMultiply