changing the appearance of a point
Introduction
You can change the appearance of a point in a script. Following applets show how to change the size, the color or the style by clicking on a button or by moving a slider.
How do you do this?
Create a point A, whose properties we will change by buttons or sliders.
- Size by button:
Create a button with the script
SetPointSize(A,9)to set its size to 9 on clicking. - Size by slider:
- Create a slider with name size with values from 1 to 9.
- Rightclick on the slider to open its Properties and select the tab Scripting.
- Type the command
SetPointSize(A,size)to change the size of A when moving the slider. - Color by button:
Create a button with the script
SetColor(A, "Red")tot set the color to red on clicking. - Color by sliders:
- Create sliders red, green and blue from
0to 1 with increment0.1 - Open the Properties of the slider red and select the tab Scripting. - Type the commandSetColor(A,red, green, blue)to change the color while moving the slider. - Do the same for the sliders green and blue. - Observe how you can create whatever color by while combinating the values of the sliders. - Point style:
- Create a slider style from
0to 9 with increment 1. - Open the Properties of the sleder and select the tab Scripting. - Type the commandSetPointStyle(A, style)to change the style of A when moving the slider. - Button reset: Create a button with following script to reset the settings of A on clicking:
SetPointSize(A,5) SetColor(A,"Blue") SetPointStyle(A,0)