void idle(void) {
static int frames;
static float time;
float ifps;
vec3 v;
vec4 q0,q1,q2;
matrix m;
ifps = 1.0 / getfps();
if(!my_pause) angle += ifps * 360.0 / 4.0;
v_set(sin(angle * DEG2RAD / 3),cos(angle * DEG2RAD / 7),2,light);
v_set(0,0,1,v);
q_set(v,psi,q0);
v_set(0,1,0,v);
q_set(v,phi,q1);
q_multiply(q0,q1,q2);
q_to_matrix(q2,m);
v_set(dist,0,0,camera);
v_transform(camera,m,camera);
v_add(camera,mesh,camera);
frames++;
time += ifps;
if(time > 1.0) {
printf("%d frames %.2f fps\n",frames,(float)frames / time);
frames = 0;
time = 0;
}
}
void mainloop()
{
//x,y记录当前位置，dx,dy记录速度向量，r记录圆半径
int x = 0, y = 0, dx = 1, dy = 1, r = 100;
for ( ; is_run(); delay_fps(60) )
{
// todo: 逻辑更新
// 当前位置 + 速度
x += dx;
y += dy;
if (x < r) dx = 1; //碰左
if (y < r) dy = 1; //碰上
if (x >= ege::getwidth() - r) dx = -1; //碰右
if (y >= ege::getheight() - r) dy = -1; //碰下
// todo: 图形更新
cleardevice();
setcolor(GREEN);
setfillcolor(BLUE);
fillellipse(x, y, r, r);
{// 画帧率文字
char str[20];
sprintf(str, "fps %.02f", getfps()); //调用getfps取得当前帧率
setcolor(WHITE);
outtextxy(0, 0, str);
}
}
}
// 主函数
int main( int argc, char* argv[] ) {
int i, ms_x = -1024, ms_y = -1024, exitflag = 0;
int fps = 60;
double dtime;
int mode = preinit( argc, argv ); // 记录初始化模式
if ( mode < 0 ) return 0;
randomize(); // 初始化随机种子
initgraph( -1, -1 ); // 打开图形窗口，以全屏模式
showmouse( mode );
sc_width = getwidth();
sc_heigh = getheight();
// 初始化所有星星
for ( i = 0; i < g_max; i++ ) {
InitStar( i );
star[i].x = randomf();
}
// 绘制星空，按任意键或移动鼠标退出
setfont( 12, 6, "宋体" );
setrendermode( RENDER_MANUAL );
dtime = fclock();
while ( kbmsg() ) getkey();
for ( ; !exitflag && is_run() && kbmsg() == 0; delay_fps( fps ) ) { //每秒画120帧，kbhit(1)是获取键盘任意键的消息，详见pdf
// 如果有鼠标消息
while ( mousemsg() ) {
mouse_msg msg = getmouse();
if ( ms_x <= -1024 ) {
ms_x = msg.x;
ms_y = msg.y;
}
// 处理鼠标，移动超出范围就退出
if ( mode == 0 ) { // 仅全屏模式才处理鼠标
int x = msg.x, y = msg.y;
x -= ms_x;
y -= ms_y;
if ( x * x + y * y > 400 ) exitflag = 1;
}
}
// 显示星星
double dt = 1.0 / fps; //fclock() - dtime;
dtime += dt;
for ( int i = 0; i < g_max; i++ ) {
MoveStar( i, dt );
}
// 显示FPS
{
char str[60];
sprintf( str, "%8.2f FPS", getfps());
outtextxy( 0, 0, str ); //显示fps
}
}
closegraph(); // 关闭图形窗口
return 0;
}
bool isDoubleLbutton()//鼠标双击算法
{
static int x,y;
static int state=0;
static int dTimeB=0;
if (isLButton()&&state==0)
{
state=1;
x=mouse(X);
y=mouse(Y);
}
if ((!isLButton())&&state==1)
{
state=2;
dTimeB=dTimeB+1000/getfps();
}
if ((!isLButton())&&state==2)
{
dTimeB=dTimeB+1000/getfps();
}
if (state==2&&isLButton())
{
x=mouse(X);
y=mouse(Y);
state=3;
dTimeB=dTimeB+1000/getfps();
}
if (dTimeB>inf.mouse_speed&&state==2)
{
dTimeB=0;
state=0;
}
if (dTimeB<=inf.mouse_speed&&state==3)
{
if(abs(mouse(X)-x)<4&&abs(mouse(Y)-y)<4)
{
state=0;
dTimeB=0;
return true;
}
}
return false;
}
void idle(void) {
float ifps;
fps = getfps();
ifps = 1.0 / fps;
if(!pause) view += ifps;
VectorSet(0,120,240 * cos(view / 3),camera);
VectorSet(0,0,0,dir);
VectorCopy(camera,light);
light[3] = 1.0;
angle -= ifps * 360.0 * 0.2;
glutPostRedisplay();
}
void idle(void) {
float ifps;
fps = getfps();
ifps = 1.0 / fps;
angle += ifps * 0.1;
VectorSet(dist * cos(angle),dist * sin(angle),
dist * (cos(alpha) + 1) / 2,camera);
VectorSet(0,0,0,dir);
VectorSet(0,0,1000,light);
light[3] = 1.0;
glutPostRedisplay();
}
void displayhdl::render()
{
glDisable(GL_LIGHTING);
char str[256];
framenum++;
if (show_framerate)
{
sprintf(str, "%f seconds", gettime());
renderstring2d(str, 1.0, 1.0, 1.0, 0.0, 1.0);
sprintf(str, "%f frames", framenum);
renderstring2d(str, 1.0, 1.0, 1.0, 0.0, .98);
sprintf(str, "%f fps ave", framenum/currtime);
renderstring2d(str, 1.0, 1.0, 1.0, 0.0, .96);
sprintf(str, "%f fps", getfps());
renderstring2d(str, 1.0, 1.0, 1.0, 0.0, .94);
}
glEnable(GL_LIGHTING);
}
void display(void) {
float mview[16],imview[16];
char buffer[128];
shadowmap();
glClearColor(0,0,0,1);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45,4.0 / 3.0,1,2048);
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(camerapos[0],camerapos[1],camerapos[2], cameradir[0],cameradir[1],cameradir[2], 0,0,1);
glLightfv(GL_LIGHT0,GL_POSITION,lightpos);
glEnable(GL_TEXTURE_GEN_S);
glEnable(GL_TEXTURE_GEN_T);
glTexGeni(GL_S,GL_TEXTURE_GEN_MODE,GL_SPHERE_MAP);
glTexGeni(GL_T,GL_TEXTURE_GEN_MODE,GL_SPHERE_MAP);
glEnable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D); // draw model
glBindTexture(GL_TEXTURE_2D,texturemodel);
glPushMatrix();
glTranslatef(objpos[0],objpos[1],objpos[2]);
glRotatef(modelangle,0,0,1);
glCallList(modellist);
glPopMatrix();
glDisable(GL_TEXTURE_GEN_S);
glDisable(GL_TEXTURE_GEN_T);
glDisable(GL_LIGHTING);
glBindTexture(GL_TEXTURE_2D,textureground); // draw ground
glCallList(groundlist);
glDisable(GL_TEXTURE_2D);
glPushMatrix(); // light sources
glTranslatef(lightpos[0],lightpos[1],lightpos[2]);
glColor4f(0,1,0,1);
glCallList(lightlist);
glColor4f(1,1,1,1);
glPopMatrix();
glEnable(GL_TEXTURE_GEN_S);
glEnable(GL_TEXTURE_GEN_T);
glEnable(GL_TEXTURE_GEN_R);
glEnable(GL_TEXTURE_GEN_Q);
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);
glGetFloatv(GL_MODELVIEW_MATRIX,mview);
MatrixInverse(mview,imview);
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glTranslatef(0.5,0.5,0);
glScalef(0.5,0.5,1.0);
glOrtho(-modelsize,modelsize,-modelsize,modelsize,-1,1);
gluLookAt(lightpos[0],lightpos[1],lightpos[2], objpos[0],objpos[1],objpos[2], 0,1,0);
glMultMatrixf(imview);
glEnable(GL_TEXTURE_2D);
glEnable(GL_BLEND); // shadow
glBlendFunc(GL_ZERO,GL_ONE_MINUS_SRC_COLOR);
glBindTexture(GL_TEXTURE_2D,textureshadow);
glCallList(groundlist);
glDisable(GL_BLEND);
glMatrixMode(GL_MODELVIEW);
glDisable(GL_TEXTURE_GEN_S);
glDisable(GL_TEXTURE_GEN_T);
glDisable(GL_TEXTURE_GEN_R);
glDisable(GL_TEXTURE_GEN_Q);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-1,1,-1,1,-1,1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glColor4f(1,1,1,1);
glDisable(GL_DEPTH_TEST);
glDisable(GL_TEXTURE_2D);
glDisable(GL_LIGHTING);
sprintf(buffer,"fps: %.2f",getfps());
drawstring(-0.95,0.95,buffer);
glEnable(GL_DEPTH_TEST);
glutSwapBuffers();
}