opengl_code.rar_opengl编程烟花

#include <windows.h> // Header File For Windows #include <gl\gl.h> // Header File For The OpenGL32 Library #include <gl\glu.h> // Header File For The GLu32 Library #include <gl\glaux.h> // Header File For The Glaux Library #include <stdio.h> #include <olectl.h> #include <math.h> #include <list> int fps(72); //帧数 #include "Misc.h" #include "Camera.h" #include "3DS.h" HDC hDC=NULL; // Private GDI Device Context HGLRC hRC=NULL; // Permanent Rendering Context HWND hWnd=NULL; // Holds Our Window Handle HINSTANCE hInstance; // Holds The Instance Of The Application bool keys[256]; // Array Used For The Keyboard Routine bool active=TRUE; // Window Active Flag Set To TRUE By Default bool fullscreen=TRUE; // Fullscreen Flag Set To Fullscreen Mode By Default char* brand=NULL; //显卡型号 char* vendor=NULL; //显卡制造商 char* version=NULL; //版本号 float Noise1(int x, int y); float SmoothNoise_1(int x, int y); float Cosine_Interpolate(float a, float b, float x); float InterpolatedNoise_1(float x, float y); float PerlinNoise_2D(float x, float y); GLuint texgrass; GLuint texdot; CCamera camera; t3DModel skybox; CVect3 EyePosition; GLuint AllTerrain; long pcount(0); float angle; vec axis; ///////////////////////////////////////////////////////////////////////////////// //粒子的代码 const float K = 0.002f; //阻尼常数 const float G = 0.035f; //重力加速度 float GetRandom(float minv, float maxv) { return (float)rand()/RAND_MAX*(maxv-minv)+minv; } class FireDot { public: float Mass; //粒子的质量 vec Pos; //火星粒子当前的位置 vec FirstCol; //颜色1 vec SecondCol; //颜色2 vec Speed; //粒子的速度 float Energy; //粒子能量，当能量为零时，粒子即死亡 float Size; //粒子尺寸 void Render(); }; void FireDot::Render() { //能量为零时就不画了。 if(Energy<=0.0f) return; pcount++; //绘制粒子 glPushMatrix(); glTranslatef(Pos.x, Pos.y, Pos.z); glPushMatrix(); glRotatef(angle, axis.x, axis.y, axis.z); glPushAttrib(GL_ALL_ATTRIB_BITS); glDisable(GL_LIGHTING); glDisable(GL_FOG); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE); glEnable(GL_TEXTURE_2D); glBindTexture(GL_TEXTURE_2D, texdot); if(rand()%2==0) glColor4f(FirstCol.x, FirstCol.y, FirstCol.z, Energy/100.0f); else glColor4f(SecondCol.x, SecondCol.y, SecondCol.z, Energy/100.0f); glDepthMask(GL_FALSE); glBegin(GL_QUADS); glTexCoord2i(0, 1); glVertex3f(-Size, Size, 0.0f); glTexCoord2i(0, 0); glVertex3f(-Size, -Size, 0.0f); glTexCoord2i(1, 0); glVertex3f(Size, -Size, 0.0f); glTexCoord2i(1, 1); glVertex3f(Size, Size, 0.0f); glEnd(); glDepthMask(GL_TRUE); glPopAttrib(); glPopMatrix(); glPopMatrix(); //更新位置 Pos+=Speed; //能量减少 Energy-=10.0f; } std::list<FireDot> fireDot; class PreExplose { public: float Mass; //质量 vec Pos; //位置 vec Speed; //速度 float Energy; //能量, 能量为零时粒子就死亡 float Size; //尺寸 bool IsExplose; void Render(); }; void PreExplose::Render() { //粒子死亡后就不渲染 if(Energy<=0.0f) return; //添加FireDot粒子 //添加10个 FireDot newDot; for(int i=0;i<1;i++) { newDot.Energy = Energy; newDot.FirstCol.x = 1.0f; newDot.FirstCol.y = 1.0f; newDot.FirstCol.z = 1.0f; newDot.SecondCol.x = 1.0f; newDot.SecondCol.y = 1.0f; newDot.SecondCol.z = 0.0f; newDot.Mass = 0.0001f; newDot.Size = Size; newDot.Pos = Pos; newDot.Speed.x = GetRandom(-0.05f, 0.05f); newDot.Speed.y = GetRandom(-0.05f, 0.05f); newDot.Speed.z = GetRandom(-0.05f, 0.05f); fireDot.push_back(newDot); } //更新位置 //计算重力,沿Y轴向下 vec gravity(0.0f, -Mass*G, 0.0f); //计算合力 vec resultantf = gravity; //计算加速度 vec acc = resultantf/Mass; //计算速度 Speed+=acc; //更新位置 Pos+=Speed; //能量减少 Energy-=2.0f; } std::list<PreExplose> preExplose; void DrawFireworks() { std::list<FireDot>::iterator pFireDot; std::list<PreExplose>::iterator pPreExplose; //遍例链表，删除已经死亡的例子 for(pFireDot=fireDot.begin();pFireDot!=fireDot.end();pFireDot++) { if(pFireDot->Energy<=0.0f) { pFireDot=fireDot.erase(pFireDot); } } for(pPreExplose=preExplose.begin(); pPreExplose!=preExplose.end(); pPreExplose++) { if(pPreExplose->Energy<=0.0f && pPreExplose->IsExplose==false) { //添加一个烟花爆炸 PreExplose newExplose; for(int i=0;i<80;i++) { newExplose.Pos.x = pPreExplose->Pos.x; newExplose.Pos.y = pPreExplose->Pos.y; newExplose.Pos.z = pPreExplose->Pos.z; newExplose.Mass = 0.1f; newExplose.Energy = GetRandom(90.0f, 100.0f); newExplose.Size = 1.5f; newExplose.Speed.x = GetRandom(-1.0f, 1.0f); newExplose.Speed.y = GetRandom(-1.0f, 1.0f); newExplose.Speed.z = GetRandom(-1.0f, 1.0f); newExplose.IsExplose = true; preExplose.push_back(newExplose); } } if(pPreExplose->Energy<=0.0f) pPreExplose=preExplose.erase(pPreExplose); } //渲染 for(pFireDot=fireDot.begin();pFireDot!=fireDot.end();pFireDot++) { pFireDot->Render(); } for(pPreExplose=preExplose.begin(); pPreExplose!=preExplose.end(); pPreExplose++) { pPreExplose->Render(); } //开始添加新的PreExplose单元 //限制下数量，最大50 static int ccount=0; //fps = preExplose.size(); if(preExplose.size()>10) return; ccount++; if(ccount<fps*0.8f) return; ccount=0; PreExplose newDot; //随机一个位置 newDot.Pos.x = GetRandom(50.0f, 60.0f); newDot.Pos.y = 6.0f; newDot.Pos.z = GetRandom(50.0f, 60.0f); //确定质量 newDot.Mass = 0.9f; //初始能量 newDot.Energy = GetRandom(95.0f, 100.0f); //初始速度 newDot.Speed.x = GetRandom(-0.4f, 0.4f); newDot.Speed.y = GetRandom(2.3f, 3.3f); newDot.Speed.z = GetRandom(-0.4f, 0.4f); newDot.Size = 1.0f; newDot.IsExplose = false; preExplose.push_back(newDot); } //////////////////////////////////////////////////////////////////////////////////// struct Terrain { float x, y, z; float s, t; float norx, nory, norz; }; Terrain terrain[250][250]; void initTerrain() { for(int x=0;x<=249;x++) for(int z=0;z<=249;z++) { terrain[x][z].x =(float)(x- 125)*4.0f; terrain[x][z].y =25.0f*PerlinNoise_2D((x+10000)/10.0f, (z+10000)/10.0f); terrain[x][z].z =(float)(z- 125)*4.0f; terrain[x][z].s =x/15.0f; terrain[x][z].t =z/15.0f; } for(x=0;x<=249;x++) for(int z=0;z<=249;z++) { if(x>0 && z>0 && x<249 && z<249) { vec v1; v1.x=terrain[x+1][z].y - terrain[x-1][z].y; v1.y= 0.5f; v1.z=terrain[x][z+1].y - terrain[x][z-1].y; v1.Normalize(); terrain[x][z].norx =v1.x; terrain[x][z].nory =v1.y; terrain[x][z].norz =v1.z; } else { terrain[x][z].norx =0.0f; terrain[x][z].nory =1.0f; terrain[x][z].norz =0.0f; } } } //计算BILLBOARD， 算转角和转轴 void CalcTheBillboard() { vec eyepos(EyePosition.x-56, EyePosition.y-30, EyePosition.z-56); vec face(0.0f, 0.0f, -1.0f); eyepos.Normalize(); //计算转角 angle = acos(eyepos % face)*180.0f/3.14159f; //计算转轴 axis = eyepos * face; axis = -axis; axis.Normalize(); } void DrawModel(t3DModel& Model); void DrawTerrain() { glEnable(GL_TEXTURE_2D); glBindTexture(GL_TEXTURE_2D, texgrass); for(int z=0;z<=248;z++) { glBegin(GL_QUAD_STRIP); for(int x=0;x<=249;x++) { glNormal3f(terrain[x][z].norx , terrain[x][z].nory , terrain[x][z].norz); glTexCoord2f(terrain[x][z].s, terrain[x][z].t); glVertex3f(terrain[x][z].x, terrain[x][z].y, terrain[x][z].z); glNormal3f(terrain[x][z+1].norx , terrain