OpenGL之鼠标控制坐标系旋转、缩放、移动
OpenGL之鼠标控制坐标系旋转、缩放、移动
1、实现代码
void CMyStatic::OnMouseMove(UINT nFlags, CPoint point)
{
// TODO: 在此添加消息处理程序代码和/或调用默认值
if (point.x<920)
{
int diffX = (int)(point.x - m_fLastX);
int diffY = (int)(point.y - m_fLastY);
m_fLastX = (float)point.x;
m_fLastY = (float)point.y;
// Left mouse button
if (nFlags &MK_LBUTTON)
{
m_fRotX += (float)0.5f * diffY;
if ((m_fRotX > 360.0f) || (m_fRotX < -360.0f))
{
m_fRotX = 0.0f;
}
m_fRotY += (float)0.5f * diffX;
if ((m_fRotY > 360.0f) || (m_fRotY < -360.0f))
{
m_fRotY = 0.0f;
}
}
// Right mouse button
else if (nFlags & MK_RBUTTON)
{
m_fZoom -= (float)0.1f * diffY;
}
// Middle mouse button
else if (nFlags & MK_MBUTTON)
{
m_fPosX += (float)0.05f * diffX;
m_fPosY -= (float)0.05f * diffY;
}
}
CStatic::OnMouseMove(nFlags,point);
}
2、效果图
旋转（鼠标右键实现）
缩放（鼠标左键实现）：
移动（鼠标滚轮按键实现）：
