public class ShapeUtils
extends java.lang.Object
DrawUtils
, but returns the raw vertices
instead of drawing them for you.Modifier and Type | Method and Description |
---|---|
static float[] |
createArc(float centerX,
float centerY,
float radius,
float startAngle,
float arcAngle,
int numSegments)
Creates the vertices for an arc shape.
|
static float[] |
createCircle(float centerX,
float centerY,
float radius,
int numSegments)
Creates the vertices for a simple circle.
|
static float[] |
createEllipse(float centerX,
float centerY,
float width,
float height,
float angleOffset,
int numSegments)
Creates the vertices for an elliptical shape.
|
public static float[] createCircle(float centerX, float centerY, float radius, int numSegments)
Optimized circle-drawing algorithm based on code taken from: http://slabode.exofire.net/circle_draw.shtml
centerX
- The x value of the center point of the circle.centerY
- The y value of the center point of the circle.radius
- The radius of the circle to be drawn.numSegments
- How many line segments the circle should be made up
of (higher number = smoother circle).
public static float[] createEllipse(float centerX, float centerY, float width, float height, float angleOffset, int numSegments)
Optimized circle-drawing algorithm based on code taken from: http://slabode.exofire.net/circle_draw.shtml
centerX
- The x value of the center point of the circle.centerY
- The y value of the center point of the circle.width
- The width (size on unrotated x-axis) of the ellipse.height
- The height (size on unrotated y-axis) of the ellipse.angleOffset
- How much to rotate the ellipse from its original axis,
in degrees.numSegments
- How many line segments the ellipse should be made up
of (higher number = smoother ellipse).
public static float[] createArc(float centerX, float centerY, float radius, float startAngle, float arcAngle, int numSegments)
Optimized arc-drawing algorithm based on code taken from: http://slabode.exofire.net/circle_draw.shtml
centerX
- The x value of the center point of the arc.centerY
- The y value of the center point of the arc.radius
- The radius of the arc to be drawn.startAngle
- The angle the arc should start at, in degrees.arcAngle
- The size of the arc, in degrees.numSegments
- How many line segments the arc should be made up
of (higher number = smoother arc).