display.newPolygon()
Type Function Library display.* Return value ShapeObject Revision 2017.3060 Keywords shape, polygon, vector See also Shapes — Paths, Fills, Strokes (guide) Display Objects (guide)
Overview
Draws a polygon shape by providing the outline (contour) of the shape. This includes convex or concave shapes. Self-intersecting shapes, however, are not supported and will result in undefined behavior.
The local origin is at the center of the polygon and the anchor point is initialized to this local origin.
Syntax
display.newPolygon( [parent,] x, y, vertices )
parent (optional)
GroupObject. An optional display group in which to insert the polygon.
x / y (required)
Numbers. The location of the object relative to its parent.
vertices (required)
Array. An array of x and y coordinates. These coordinates will automatically be re-centered about the center of the polygon.
Gotchas
If an invalid polygon is requested, for example a polygon with intersecting lines, it may not render properly. Similarly, if any coordinate points are duplicated, including the first or last point, the polygon will be invalid. For correct results, you must specify valid polygon coordinates.
Example
local halfW = display.contentWidth * 0.5
local halfH = display.contentHeight * 0.5
local vertices = { 0,-110, 27,-35, 105,-35, 43,16, 65,90, 0,45, -65,90, -43,15, -105,-35, -27,-35, }
local o = display.newPolygon( halfW, halfH, vertices )
o.fill = { type="image", filename="mountains.png" }
o.strokeWidth = 10
o:setStrokeColor( 1, 0, 0 )
