3.2.16.   Properties of Images

Position

The position of an image may be absolute on screen or relative to the coordinate system (see Properties of the image). The latter is achieved by specifying up to three corner points. This gives you the flexibility to scale, rotate, and even distort images.

·        1. corner (position of the lower left corner of the image)

·        2. corner (position of the lower right corner of the image)  
Note: This corner may only be set if the 1. corner was set before. It controls the width of the image.

·        4. corner (position of the upper left corner of the image)    
Note: This corner may only be set if the 1. corner was set before. It controls the height of the image.

Note: Also see command Corner

 

Examples:

Let’s create three points A, B, and C to explore the effects of the corner points.

·        Set point A as the first and point B as the second corner of your image. By dragging points A and B in  Move mode you can explore their influence very easily.

·        Set point A as the first and point C as the fourth corner and explore how dragging the points now influences the image.

·        Finally, you could set all three corner points and see how dragging the points distorts your image.

 

You already saw how to influence the position and size of your image. If you want to attach your image to a point A and set its width to 3 and its height to 4 units, you could do the following:

·        1. corner: A

·        2. corner: A + (3, 0)

·        4. corner: A + (0, 4)

Note: If you now drag point A in  Move mode, your image keeps the desired size.

Related Topics

3.2. Modes
Background Image
Transparency


www.geogebra.org