void MakePolygon()
{
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(1.0,1.0,1.0,1.0);
for(int i=0;i<=VertInd;i++)
MakeDot(ToDraw->LocalSpaceList[i]);
glColor3dv(ToDraw->Color);
glBegin(GL_POLYGON);
for(int i=0;i<=VertInd;i++)
glVertex2dv(ToDraw->LocalSpaceList[i]);
glEnd();
glLineWidth(2.0);
glColor3d(0.0,0.0,0.0);
glBegin(GL_LINE_LOOP);
for(int i=0;i<=VertInd;i++)
glVertex2dv(ToDraw->LocalSpaceList[i]);
glEnd();
MakeDot(0,0);
no2[0]=(ToDraw->NumVertices-VertInd)/10+'0';
no2[1]=(ToDraw->NumVertices-VertInd)%10+'0';
strcpy(hello3,"Vertices Left: ");
strcat(hello3,no2);
text(hello3,-0.22,-0.15,1);
text(instructions,-0.2,-0.05,0);
glutSwapBuffers();
}
int main()
{
BSTree T;
int k;
BSTree result;
printf("建立二叉排序树，请输入序列, 以-1结束:\n");
CreateBST(&T);
printf("先序遍历输出序列为:");
PreOrder(T);
/*
printf("\n请输入要查找的元素:");
fflush(stdin);
scanf("%d",&k);
result = SearchBST(T,k);
if (result != NULL)
printf("要查找的元素为%d\n",result->key);
else
printf("未找到!\n");
result = DelBST(T,k);
printf("删除元素%d后的排序树先序遍历为\n",k);
*/
PreOrder(T);
MakeDot(T);
return 0;
}
void simulate()//GLUT required function.
{ glClear(GL_COLOR_BUFFER_BIT);
// glClearColor((rand()%100)/100.0,(rand()%100)/100.0,(rand()%100)/100.0,1.0);
glClearColor(1.0,1.0,1.0,1.0);
if(!Pause || let)
{//Detect collisions
for(i=0;i<NoOfLayers;i++)
{
for(j=0;j<BodiesPerLayer;j++)
{ if(layer[i][j].Exists)
{ if(wallL.Exists)DetectColl(layer[i][j],wallL);
if(wallR.Exists)DetectColl(layer[i][j],wallR);
if(ground.Exists)DetectColl(layer[i][j],ground);
if(wallU.Exists)DetectColl(layer[i][j],wallU);
for(k=i;k<NoOfLayers;k++)
{
for(l=(k==i)?j+1:0;l<BodiesPerLayer;l++)
{
if(layer[k][l].Exists)
DetectColl(layer[i][j],layer[k][l]);
}
}
}
}
}
}
//Render everything
for(i=0;i<NoOfLayers;i++)
{
for(j=0;j<BodiesPerLayer;j++)
{
if(layer[i][j].Exists)
layer[i][j].Render();
}
}
if(wallR.Exists)wallR.Render();
if(wallL.Exists)wallL.Render();
if(ground.Exists)ground.Render();
if(wallU.Exists)wallU.Render();
if(!Pause || let)
{//Detect collisions
for(i=0;i<NoOfLayers;i++)
{
for(j=0;j<BodiesPerLayer;j++)
{
if(layer[i][j].Exists)
layer[i][j].Update();
}
}
if(wallL.Exists)wallL.Update();
if(wallR.Exists)wallR.Update();
if(ground.Exists)ground.Update();
if(wallU.Exists)wallU.Update();
let=0;
}
if(Pause)Button1=PlayButton;
else Button1=PauseButton;
strcpy(hello,"");
if(Pause)strcpy(hello,"Simulation paused.\nPress 'N' for next frame.");
if(Button1.isPressed(CurrMousePos))strcpy(hello,"Press for Play/Pause.");
Button1.Render();
if(LayerManager.isPressed(CurrMousePos))strcpy(hello,"Press for Layer Manager.");
LayerManager.Render();
if(lwall.isPressed(CurrMousePos))strcpy(hello,"Press for Left Wall Toggle.");
lwall.Render();
if(rwall.isPressed(CurrMousePos))strcpy(hello,"Press for Right Wall Toggle.");
rwall.Render();
if(uwall.isPressed(CurrMousePos))strcpy(hello,"Press for Ceiling Toggle.");
uwall.Render();
if(gwall.isPressed(CurrMousePos))strcpy(hello,"Press for Ground Toggle.");
gwall.Render();
text(hello,CurrMousePos[0]+0.01,CurrMousePos[1]+0.01);
MakeDot(CurrMousePos);
if(FirstTime)text("No Objects defined. Use Layer manager to add some layers.\nPlease don't close any window manually. This will end the program.",0.25,0.50);
glutSwapBuffers();
}