74 lines
1.9 KiB
ReStructuredText
74 lines
1.9 KiB
ReStructuredText
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************
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View Control
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************
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The Menu for View Control.
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.. figure:: /images/addons_pdt_view_1.png
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:width: 300px
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This section deals with the View Control section of PDT, this menu uses its own variables.
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Rotate Absolute:
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================
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This button will rotate the view using absolute rotational values as set in the three inputs underneath.
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These are X, Y & Z rotations and should be entered as degrees, not radians.
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A rotation of 0,0,0 is the same as Blender ``Top`` view.
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Uses: ``X Rot``, ``Y Rot`` & ``Z Rot``.
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**Example 1**: Rotate view 25 in X, 17 in Y and 90 in Z, set X Rot,
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Y Rot & Z Rot to 25, 17 & 90 respectively, click ``Rotate Abs`` button.
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The next row of icons Orbit the view about its horizontal & vertical screen axes,
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or Roll the view about its normal axis to your screen.
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All of these 5 options use the ``Angle`` input from this menu.
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Orbit Left:
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===========
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Set Angle, click ``Orbit Left`` icon (Left Arrow), view rotates about its vertical axis.
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Orbit Right:
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============
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Set Angle, click ``Orbit Right`` icon (Right Arrow), view rotates about its vertical axis.
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Orbit Up:
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=========
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Set Angle, click ``Orbit Up`` icon (Up Arrow), view rotates about its horizontal axis.
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Orbit Down:
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===========
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Set Angle, click ``Orbit Down`` icon (Down Arrow), view rotates about its horizontal axis.
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Roll View:
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==========
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Set angle, click ``Roll View`` icon (Roll), view rotates about its normal axis to your screen.
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Isometric View:
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===============
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This button sets the view orientation to what a Draftsman understands as a true Isometric view.
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This is achieved by rotating a ``Front`` view 45 degrees about its vertical axis, then 35.2644
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degrees about its horizontal axis. In the system this is achieved using an Absolute View Rotation of:
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**Quaternion(0.8205, 0.4247, -0.1759, -0.3399)**
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.. figure:: /images/addons_pdt_view_2.png
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:width: 500px
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The Top Plane Axes Appear to be at 30 degrees to the View's Horizontal Axis.
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