为什么当我使用旋转摄像机渲染场景时，您希望出现在其他对象后面的场景却没有这样做？ OPENGL Objective-c

发布于 2024-08-29 05:02:09 字数 744 浏览 4 评论 0原文

我正在渲染一个场景，其中有两个球体。我正在围绕其中一个旋转相机。所发生的事情是违反直觉的。当摄像机绕球体旋转时，另一个摄像机却在它前面，而您预计它在后面。因此，看起来好像这些球体并没有围绕彼此旋转，而应该围绕的球体总是在前面。请帮忙。

以下是渲染场景的代码：

glLoadIdentity();

[self positionCamera];

glutSolidSphere(2, 12,12);

glPushMatrix();
glTranslatef(5, 0, 0);
glutSolidSphere(0.5, 12,12);
glPopMatrix();

glFlush();

该块是使用时调用的类的一部分。

[NSTimer scheduledTimerWithTimeInterval:DEFAULT_ANIMATION_INTERVAL 
                                 target:self 
                               selector:@selector(drawRect) 
                               userInfo:nil 
                                repeats:YES];

并

-(void)positionCamera{}

包含相机旋转数学和 gluLookAt()

原文

I am rendering a scene in which I have two spheres. I am revolving a camera around one of them. What happens is counter-intuitive. When the camera goes around the sphere the other gets in front of it when you'd expect it to be behind. So it appears as though the spheres aren't revolving around each other and the one the should go around is always upfront. Please help.

Here is the code that renders the scene:

glLoadIdentity();

[self positionCamera];

glutSolidSphere(2, 12,12);

glPushMatrix();
glTranslatef(5, 0, 0);
glutSolidSphere(0.5, 12,12);
glPopMatrix();

glFlush();

This block is part of a class that gets called on using.

[NSTimer scheduledTimerWithTimeInterval:DEFAULT_ANIMATION_INTERVAL 
                                 target:self 
                               selector:@selector(drawRect) 
                               userInfo:nil 
                                repeats:YES];

And