gc:drawArc

gc:drawArc is a function that is part of gc (Graphics Context).

Draws an arc in the rectangle with upper left corner (x,y) and pixel width and height. The arc is drawn beginning at startAngle degrees and ending at endAngle. Zero degrees points to the right and 90 degrees points up (standard mathematical practice but worth mentioning since the y axis is inverted).

This has been introduced in TI-Nspire OS 3.0 (Changes).

Syntax

gc:drawArc(x, y, width, height, start angle, finish angle)

Parameter	Type	Description
x	number	The x-coordinate of the upper-left point
y	number	The x-coordinate of the upper-left point
width	number	Width of the rectangle containing the arc
height	number	Height of the rectangle containing the arc
start angle	number	start angle
finish angle	number	finish angle

Example

gc:drawArc(10, 10, 20, 30, 0, 120)

Good to know

To draw a circle, the width and height must be equal length and the start and end angles must be 0 and 360. If width and height are different lengths, this routine will draw an oval.