用opengl和VC++实现的地球仪

/*********************包含链接的库文件*******************************************************************************************/ #pragma comment( lib, "opengl32.lib" ) #pragma comment( lib, "glu32.lib" ) #pragma comment( lib, "glut32.lib") #pragma comment( lib, "glew32.lib") #pragma comment( lib, "glaux.lib") #pragma comment( lib, "vfw32.lib" ) /********************************************************************************************************************************/ /*#include <GL/glut.h>*/ #include "glut.h" #include <GL/gl.h> /*#include <GL/glaux.h>*/ #include "glaux.h" #include <math.h> #include <windows.h> #define PI 3.14159265358979323846 GLfloat corner=0.0; GLUquadricObj* qobj; //二次方程对象 a1x^2 + a2y^2 + a3z^2 + a4xy + a6xz + a7x + a8y + a9z + a10 = 0 GLuint texName, texName1, texName2; GLuint flag=1; GLfloat bracket_diffuseCoeff[]={0.53, 0.37, 0.10, 1.0}; GLfloat bracket_specularCoeff[]={0.53, 0.37, 0.10, 1.0}; GLfloat bracket_surfEmissionCoeff[]={0.2, 0.2, 0.2, 1.0}; GLfloat underpan_diffuseCoeff[]={0.5, 0.5, 0.0, 1.0}; GLfloat underpan_specularCoeff[]={0.5, 0.5, 0.0, 1.0}; GLfloat underpan_surfEmissionCoeff[]={0.2, 0.2, 0.2, 1.0}; GLfloat wall_mat[]={0.6,0.6,0.6,1}; GLfloat wall_mat1[]={1,0,0,1}; GLfloat wall_mat2[]={0.6,0.6,0.6,1}; GLfloat shininess[]={25.0}; void draw_semi_circle(float r) //中心在(x,y,0)，半径为r的半圆 { float angle; glBegin(GL_LINE_STRIP); for(angle = 2*PI; angle >= PI; angle -= PI/100) { glVertex3f(r*cos(angle),r*sin(angle),0); } glEnd(); } void draw_salver(float x, float y, float a, float b) //中心在(x,y,0)，长半轴为a，短半轴为b的椭圆 { float angle; glTranslatef(x,y,0); glBegin(GL_TRIANGLE_FAN); for(angle = 2*PI; angle >= 0; angle -= PI/360) { glVertex3f(a*cos(angle),b*sin(angle),0); } glEnd(); } void draw_tellurion()//地球仪 { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); glPushMatrix(); GLfloat light0_ambient[] = { 0.3, 0.4, 0.6, 1}; GLfloat light0_diffuse[] = { 0.5, 0.4, 0.4, 1 }; GLfloat light0_specular[] = { 0.5, 0.5, 0.5, 1}; GLfloat light0_position[] = { 1, 1, 1, 0 }; //方向性光源，类似太阳 glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glLightfv(GL_LIGHT0, GL_SPECULAR, light0_specular); glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_diffuse); glLightfv(GL_LIGHT0, GL_AMBIENT, light0_ambient); glLightfv(GL_LIGHT0, GL_POSITION, light0_position); glPopMatrix(); glPushMatrix(); GLfloat light1_diffuse[] = { 0.3, 1, 0, 1}; GLfloat light1_position[] = {0.8, 1, 0.4, 1 }; glEnable(GL_LIGHTING); glEnable(GL_LIGHT1); glLightfv(GL_LIGHT1, GL_DIFFUSE, light1_diffuse); glLightfv(GL_LIGHT1, GL_POSITION, light1_position); glPopMatrix(); glPushMatrix(); GLfloat light2_diffuse[] = { 1, 0.2, 0, 1 }; GLfloat light2_position[] = {0.5, 0.2, 1, 1 }; //点光源 glEnable(GL_LIGHTING); glEnable(GL_LIGHT2); glLightfv(GL_LIGHT2, GL_DIFFUSE, light2_diffuse); glLightfv(GL_LIGHT2, GL_POSITION, light2_position); glPopMatrix(); glPushMatrix(); GLfloat light3_diffuse[] = { 0.1, 0.8, 0, 1 }; GLfloat light3_position[] = {-0.7, -0.1, 1, 1 }; glEnable(GL_LIGHTING); glEnable(GL_LIGHT3); glLightfv(GL_LIGHT3, GL_DIFFUSE, light3_diffuse); glLightfv(GL_LIGHT3, GL_POSITION, light3_position); glPopMatrix(); glPushMatrix(); GLfloat light4_diffuse[] = { 0, 1, 0, 1 }; GLfloat light4_position[] = {-0.5, -0.2, -1, 1 }; glEnable(GL_LIGHTING); glEnable(GL_LIGHT4); glLightfv(GL_LIGHT4, GL_DIFFUSE, light4_diffuse); glLightfv(GL_LIGHT4, GL_POSITION, light4_position); glPopMatrix(); glPushMatrix(); GLfloat light5_diffuse[] = { 0.4, 0.8, 1, 0 }; GLfloat light5_position[] = {-0.5, 0.2, 1, 0 }; glEnable(GL_LIGHTING); glEnable(GL_LIGHT5); glLightfv(GL_LIGHT5, GL_DIFFUSE, light5_diffuse); glLightfv(GL_LIGHT5, GL_POSITION, light5_position); glPopMatrix(); glPushMatrix(); GLfloat light6_diffuse[] = { 1, 0.3,1, 1 }; GLfloat light6_position[] = {-0.5, 0.2, 1, 0 }; glEnable(GL_LIGHTING); glEnable(GL_LIGHT6); glLightfv(GL_LIGHT6, GL_DIFFUSE, light6_diffuse); glLightfv(GL_LIGHT6, GL_POSITION, light6_position); glPopMatrix(); glPushMatrix(); GLfloat light7_diffuse[] = { 0.6, 0,0, 0 }; GLfloat light7_position[] = {0.5, -0.2, -1, 0 }; glEnable(GL_LIGHTING); glEnable(GL_LIGHT7); glLightfv(GL_LIGHT7, GL_DIFFUSE, light7_diffuse); glLightfv(GL_LIGHT7, GL_POSITION, light7_position); glPopMatrix(); glPushMatrix(); //wall glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, wall_mat); glBindTexture(GL_TEXTURE_2D,texName1);////////////////////////////////////////////////////////////Opengl glEnable(GL_TEXTURE_2D); glEnable(GL_DEPTH_TEST); glBegin(GL_QUADS); glTexCoord2f(1,0);glVertex3f( -1.0f, -1.0f,-1.0f ); glTexCoord2f(1,1);glVertex3f( -0.6f, -0.6f,1.0f ); glTexCoord2f(0,1);glVertex3f( -0.6f, 0.6f,1.0f ); glTexCoord2f(0,0);glVertex3f( -1.0f, 1.0f,-1.0f ); glEnd(); glBegin(GL_QUADS); glTexCoord2f(0,0);glVertex3f( 1.0f, -1.0f,-1.0f ); glTexCoord2f(1,0);glVertex3f( 1.0f, 1.0f,-1.0f ); glTexCoord2f(1,1);glVertex3f( 0.6f, 0.6f,1.0f ); glTexCoord2f(0,1);glVertex3f( 0.6f, -0.6f,1.0f); glEnd(); glDisable(GL_TEXTURE_2D); glPopMatrix(); glPushMatrix(); //floor glBindTexture(GL_TEXTURE_2D,texName2);///////////////////////////////////////////////////地板 glEnable(GL_TEXTURE_2D); glEnable(GL_DEPTH_TEST); glBegin(GL_QUADS); glTexCoord2f(1,1);glVertex3f( -1.0f, -1.0f,-1.0f ); glTexCoord2f(1,0);glVertex3f( 1.0f, -1.0f, -1.0f ); glTexCoord2f(0,0);glVertex3f( 0.6f, -0.6f,1.0f ); glTexCoord2f(0,1);glVertex3f( -0.6f, -0.6f,1.0f ); glEnd(); glDisable(GL_TEXTURE_2D); glPopMatrix(); glBegin(GL_QUADS); //顶 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, wall_mat2); glVertex3f( 0.6f, 0.6f, 1.0f ); glVertex3f( 1.0f, 1.0f, -1.0f ); glVertex3f( -1.0f, 1.0f, -1.0f ); glVertex3f( -0.6f, 0.6f, 1.0f ); glEnd(); //画球体 glPushMatrix(); glTranslatef(0,-0.14,0); glBindTexture(GL_TEXTURE_2D,texName); //////////////////////////////////地图 glEnable(GL_TEXTURE_2D); gluQuadricTexture(qobj,GL_TRUE); glRotatef(-90.0f,1.0f,0.0f,0.0f); glRotatef(66.3f,0.0f,0.0f,1.0f); glRotatef(-corner,0.0,-0.261,0.595); gluSphere(qobj,0.45,60,60); glDisable(GL_TEXTURE_2D); glPopMatrix(); //画地球仪下方的托盘 glPushMatrix(); glTranslatef(0,-0.14,0); glScalef(0.8f, 0.8f, 0.8f); glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, underpan_diffuseCoeff); glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, underpan_specularCoeff); glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, underpan_surfEmissionCoeff); glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, shininess); glLineWidth(2.5); draw_salver(-0.322,-0.733,0.45,0.1); glPopMatrix(); //画地球仪的支架——两部分：中轴、半园支架 //画穿地球的轴 glPushMatrix(); glTranslatef(0,-0.14,0); glScalef(0.8f, 0.8f, 0.8f); glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, bracket_diffuseCoeff); glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, bracket_specularCoeff); glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, bracket_surfEmissionCoeff); glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, shininess); glLineWidth(4.5); glBegin(GL_LINES); glVertex3f(-0.322,-0.733,0.0); glVertex3f(0.261,0.595,0.0); glEnd(); //画地球仪外边的半园支架 glRotatef(66.3f,0.0f,0.0f,1.0f); glLineWidth(6.5); draw_semi_ci