Zoom to box is broken (#17511) · Issues · ParaView / ParaView

Zoom to box is broken

This has been going on forever, here is now the master bug. I will close the others as duplicates.

This one is becoming important. I have yet another user frustrated with this incorrect behavior. We are losing customers due to the poor zooming of this feature.

Here are testing cases that fail, that I want to work:

5.4.0, Linux, local server.
Tools/ Lock View Size Custom. 1920x1080. OK.
Sources/ Sphere. Surface with Edges. Apply.
Perspective sphere full
Reset.
Zoom to box selection. Select from upper left to lower right. Include a small amount of background above, below, left and right.
We will zoom in too far. The top and the bottom of the sphere have disappeared. This is a bug.
Solution - If the ratio of the view size vs the selection is larger horizontally, zoom the selection by the vertical amount. In other words, always make the selection fit - even if there is extra on the edges.
Perspective sphere edge
Reset. +Z.
Zoom to box selection. Start selection from 1/2" left of and above the left most point of the sphere. Rubber band select to about 1/2" right and below of this point. In other words, make a 1" X 1" selection around this left most point.
We will not be centered on the point. The background to the left has disappeared. This is a bug.
Solution - Place the center of the selection in the middle of the view. Same as above - If the ratio of the view size vs the selection is larger horizontally, zoom the selection by the vertical amount. In other words, always make the selection fit - even if there is extra on the edges.
Turn off Camera Parallel Projection (This is a advanced Property).
Orthogonal sphere full
Same problem as perspective. Zoom is wrong.
Orthogonal sphere edge
This appears to be working correct. But, test.

This has been going on forever, here is now the master bug.  I will close the others as duplicates.

This one is becoming important.  I have yet another user frustrated with this incorrect behavior.  We are losing customers due to the poor zooming of this feature.

Here are testing cases that fail, that I want to work:
* 5.4.0, Linux, local server.
* Tools/ Lock View Size Custom.  1920x1080.  OK.
* Sources/ Sphere.  Surface with Edges.  Apply.
* Perspective sphere full
* Reset.
* Zoom to box selection.  Select from upper left to lower right.  Include a small amount of background above, below, left and right.  
* We will zoom in too far.  The top and the bottom of the sphere have disappeared.  This is a bug.
* Solution - If the ratio of the view size vs the selection is larger horizontally, zoom the selection by the vertical amount.  In other words, always make the selection fit - even if there is extra on the edges.
*
* Perspective sphere edge
* Reset.  +Z.
* Zoom to box selection.  Start selection from 1/2" left of and above the left most point of the sphere.  Rubber band select to about 1/2" right and below of this point.  In other words, make a 1" X 1" selection around this left most point.
* We will not be centered on the point.  The background to the left has disappeared. This is a bug.
* Solution - Place the center of the selection in the middle of the view.  Same as above - If the ratio of the view size vs the selection is larger horizontally, zoom the selection by the vertical amount.  In other words, always make the selection fit - even if there is extra on the edges.
*
* Turn off Camera Parallel Projection (This is a advanced Property).
* Orthogonal sphere full
* Same problem as perspective.  Zoom is wrong.
*
* Orthogonal sphere edge
* This appears to be working correct.  But, test.

Edited Jun 13, 2017 by W. Alan Scott

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