修改
哦,还有一件事,longtitute很有用,但当大约达到1.57时,它会翻转......
编辑工作!
哦,只有旋转速度在转一圈时才开始增加。猜测必须在每次轮换后重置tempMouse。 private void mouseWheel(object sender, MouseWheelEventArgs e)
{
if (e.Delta < 0) { distance = distance - 0.5; } else { distance = distance + 0.5; }
Point3D position = new Point3D
(
Math.Cos(longitude) * Math.Cos(latitude) * distance,
Math.Sin(latitude) * distance,
Math.Sin(longitude) * Math.Cos(latitude) * distance
);
_perspectiveCamera.Position = position;
}
private void mouseMove(object sender, MouseEventArgs e)
{
if ( e.LeftButton == MouseButtonState.Pressed )
{
if (isLeftDown == false)
{
isLeftDown = true;
tempMouseX = this.PointToScreen(Mouse.GetPosition(this)).X;
tempMouseY = this.PointToScreen(Mouse.GetPosition(this)).Y;
}
else
{
double currentDelataX = tempMouseX - this.PointToScreen(Mouse.GetPosition(this)).X;
double currentDelataY = tempMouseY - this.PointToScreen(Mouse.GetPosition(this)).Y;
longitude = longitude - currentDelataX / 5000;
latitude = latitude - currentDelataY / 5000;
Point3D objectPosition = new Point3D(0, 0, 0);
Point3D position = new Point3D
(
Math.Cos(longitude) * Math.Cos(latitude) * distance,
Math.Sin(latitude) * distance,
Math.Sin(longitude) * Math.Cos(latitude) * distance
);
_perspectiveCamera.Position = position;
Vector3D lookDirection = objectPosition - position;
_perspectiveCamera.LookDirection = lookDirection;
}
}
/////////////////////////////////////////
if (e.LeftButton == MouseButtonState.Released)
{
isLeftDown = false;
}
}
答案 0 :(得分:5)
我认为您想要将相机移动到球体上,而不是像现在这样在平面上移动。
不是将相机的位置存储在欧几里德坐标中,而是将其存储在球坐标中。
double distance;
double latitude;
double longitude;
在鼠标滚轮处理程序中,只需增加/减少distance
。
在鼠标移动处理程序中,调整与{delta}成比例的latitude
(您可能希望将其限制为+/- pi / 2,这样就不会超过极点),{{1与X delta成比例。
要计算您的位置,请使用以下内容:
longitude