OpenGL剪辑、深度和相机
剪辑/查看有问题不确定 我只是想在windows窗体(使用OpenTK)中旋转和缩放一个矩形框(线不是四边形) 这很简单,但当我缩放线条的部分时,它们会在不应该的时候被剪裁 试着玩透视和深度范围等,以及看,缩放绘图,而不是移动相机等,但我似乎无法得到我想要的行为 问题视频:OpenGL剪辑、深度和相机,opengl,camera,clipping,depth,opentk,Opengl,Camera,Clipping,Depth,Opentk,剪辑/查看有问题不确定 我只是想在windows窗体(使用OpenTK)中旋转和缩放一个矩形框(线不是四边形) 这很简单,但当我缩放线条的部分时,它们会在不应该的时候被剪裁 试着玩透视和深度范围等,以及看,缩放绘图,而不是移动相机等,但我似乎无法得到我想要的行为 问题视频: 如果您使用的是类似的任何东西,请确保zNear为正且不为零。我已经找到了答案。我说得对,但OpenTK希望您像这样声明透视图 Dim perspective1作为Matrix4=OpenTK.Matrix4.Create
如果您使用的是类似的任何东西,请确保
zNear
为正且不为零。我已经找到了答案。我说得对,但OpenTK希望您像这样声明透视图
Dim perspective1作为Matrix4=OpenTK.Matrix4.CreatePerspectiveFieldOfView(MathHelper.PiOver4,_CSng((GlControl1.Width)/(GlControl1.Height)),0.11000)
总帐负荷矩阵(透视图1)
这似乎很奇怪。使用MathHelper.PiOver4而不是45.0f解决了问题您似乎没有在任何地方设置投影矩阵。
Private Sub GlControl1_Paint(sender As Object, e As PaintEventArgs) Handles GlControl1.Paint
If (_STARTED = False) Then Return
'Set Up
GL.Clear(ClearBufferMask.ColorBufferBit)
GL.Clear(ClearBufferMask.DepthBufferBit)
Dim eye = New Vector3(cam_x, cam_y, cam_z)
Dim lookat = New Vector3(cam_x - Pan_X / GlControl1.Width, cam_y - pan_Y / GlControl1.Height, cam_z + look_z)
Dim camera = Matrix4.LookAt(eye, lookat, Vector3.UnitY)
TextBox1.Text = cam_x.ToString + ", " + cam_y.ToString + ", " + cam_z.ToString
GL.MatrixMode(MatrixMode.Modelview)
GL.LoadIdentity()
GL.LoadMatrix(camera)
'Draw Items
'Perform panning action
'Applies to all items in GL window
GL.Translate(Pan_X / GlControl1.Width, pan_Y / GlControl1.Height, 0.0)
'Initial View Angle
'GL.Rotate(45, 1.0, 1.0, 0.0)
If show_axes Then draw_axes()
GL.PushMatrix() 'Save matrix
'Perform rotations
GL.Rotate(CType(_Part.XRotation, Single), 1.0F, 0.0F, 0.0F)
GL.Rotate(CType(_Part.YRotation, Single), 0.0F, 1.0F, 0.0F)
GL.Rotate(CType(_Part.ZRotation, Single), 0.0F, 0.0F, 1.0F)
'Resize
'GL.Scale(Zoom, Zoom, Zoom)
GL.PushMatrix() ' Save Matrix for center translation
GL.Translate(-_Part.Length / 2, -_Part.Thickness / 2, _Part.Width / 2) 'Center Object
'Draw the box
draw_object(CSng(_Part.Length), CSng(_Part.Width), CSng(_Part.Thickness))
GL.PopMatrix()
GlControl1.SwapBuffers()
End Sub
Private Sub GlControl1_MouseWheel(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseWheel
If e.Delta > 0 Then
'Zoom = CSng(Zoom + Zoom_inc)
cam_z -= cam_inc
Else
'Zoom = CSng(Zoom - Zoom_inc)
cam_z += cam_inc
End If
GlControl1.Invalidate()
End Sub