CityCAD Online Help
You can import one or more image files and place them on the ground plane of your CityCAD model.
For example, you could import aerial photos or scale plans and then trace over them with CityCAD routes.
To start, click the Ground Plane Images button on the CityCAD Toolbar, or by selecting File Menu: Import: Ground Plane Image.
There are three buttons for inserting images.
Remove Image - the red delete button allows you to delete an image which you have already imported.
Move Up/Down - the green up and down arrows enable you to move the images up and down in the grid, changing the display order. All images are displayed at the same level as the ground plane, but images higher up in the list will appear on top of images further down the list.
Refresh from image file (Only available once an image has already been imported) - allows you to select an image in your model and update it with another image file. Please note this will replace and delete the previous image from your CityCAD file.
There are five columns which can be displayed in this grid:
(You right click on the grid header to display the column chooser to add or remove columns, but we recommend these are unchanged. You can also display the unique ID for each image. This ID is only used for CityCAD's own internal reference.)
The bottom half of the window is divided in to two preview boxes.
In the bottom-left corner of the window, there are four tools for navigating around in the preview boxes. From left to right:
At the bottom of the window, next to the four tools, are three buttons marked '1', '2' and '3'.
These are used to create reference points. Press the button '1', and you can then click in either preview box to set reference point 1. (You can click repeatedly several times, and it will update the reference point each time.)
You can repeat this for '2' and '3' to create the second and third reference points. Once the third reference point has been set in both boxes, then the selected image will appear in the 2d plan preview on the left.
The status outputs ("Set" or "Not Set") display which reference points have been set and which still need to be done.
There are two controls which can help you position image more accurately - 'Distance between 1 and 2' and 'Auto Set Point 3'.
If you have already set points 1 and 2 in the left hand preview box, then the distance between the two will be displayed. You can use this for reference, or if you know that point 2 should be a specific distance away, then you can type this in and click 'Set'. Point 2 will be moved so that it is that specific distance away from point 1.
Also, if you have already set points 1 and 2 in both preview boxes, then you can click 'Auto Set Point 3', which will place point 3 at 90 degrees to the line 1-2, and at the same distance away from point 1 as point 2 (See diagram below).
The Ground Plane Images window can be re-sized. Also, the vertical divider between the two preview boxes, and the horizontal divider below the image list are both adjustable.
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