Scale Pivot

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Scale Pivot

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Navigation:  Pandoras Box > Device Control > Video Layer Control >

Scale Pivot

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The scale pivot section allows moving the scale pivot to positions others than the layer’s center point. Any X, Y and Z scale applied to this layer then will use the new position as pivot.  Please remember that Players do not support the Z axis.

Each position parameter covers the value range from -999.999 to +999.999 units (the DMX Control uses a 16 bit channel covering the value range -256 to +256 units, see below).

The Pandoras Box output is always 16 units wide. The height is calculated by the aspect ratio.
A 4:3 display is 16 units wide and 12 units high.
A 16:9 display is 16 units wide and 9 units high.

How the Scale Pivot effects the scale

Applying an X&Y Scale with the default position of the scale pivot (X/Y/Z Pos=0) scales the layer evenly around its center point.

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The image sequence shows a Layer, scaled in X and Y from factor 1 to factor 0.25. The Scale Pivot’s position is set to default (X/Y/Z Pos = 0; Center Point).

Now the position of the scale pivot is changed to X Pos=-8 (left screen border) and Y Pos=4.5 (top screen border).

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The image sequence shows a layer, scaled in X and Y from factor 1 to factor 0.25 The Scale Pivot’s position is located in the corner top left.

Viewing the Scale Pivot

In order to see the position of the scale pivot in the Preview window, please do this:
1. Check the option “Show Handles” below the Preview window.
2. Now click the scale icon on the top left.
3. The scale pivot gets visible.

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When changing the position of the scale pivot with the scale pivot X/Y/Z Pos parameters, the pivot will move to its new position. If the scale pivot is located outside the output area, you may change over to Global Cam View to still see its position:

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Image above: the position of the scale pivot is changed to X Pos=-17.2, Y Pos=-7.1, it is outside the visible output area.

DMX Control
All scale pivot channels are 16bit and the default value is 32768.
Resolution: 1 DMX Step = 0.008 units

Scale Pivot’s X Position

0

max. scale pivot offset left (-256 units)

32768

Center

65535

max. scale pivot offset right (+256 units)

Scale Pivot’s Y Position

0

max. scale pivot offset bottom (-256 units)

32768

Center

65535

max. scale pivot offset top (+256 units)

Scale Pivot’s Z Position

0

max. scale pivot offset far (-256 units)

32768

Center

65535

max. scale pivot offset near (+256 units)