Commit Graph

9 Commits

Author SHA1 Message Date
vrld 19eade843c Add support for Bezier curves of arbitrary degree.
New functions:

bezier = love.math.newBezierCurve(control-points)
degree = bezier:getDegree() -- degree = #control-points - 1
x,y = bezier:getControlPoint(pos) -- pos < 0 => string.sub semantics
bezier:setControlPoint(pos, x, y) -- pos < 0 => string.sub semantics
bezier:insertControlPoint(x,y, [pos = -1])
x,y = bezier:eval(t) -- 0 <= t <= 1
polyline = bezier:render([accuracy = 5]) -- returns a table of points

Example:

function love.load()
	b = love.math.newBezierCurve(10,10, 80,400, 380,400, 470,10)
end

function love.draw()
	if not curve then -- curve rendering is expensive-ish
		curve = b:render()
	end
	love.graphics.line(curve)
end
2013-05-12 21:57:06 +02:00
vrld d454be7025 Add love.math.isConvex()
Checks whether a given polygon is convex or not.
2013-05-12 13:00:08 +02:00
Alex Szpakowski 7ab3809165 Fixed Object:typeOf for love.physics objects new to 0.8.0, removed vestigial ColorMode code 2013-05-07 15:23:26 -03:00
Alex Szpakowski 3bf43dadd8 Renamed CompressedData:getNumMipmaps to CompressedData:getMipmapCount; Improved type-checking error messages for some functions which expect function arguments 2013-05-02 17:26:50 -04:00
vrld 71317c4359 Add Geometries (replaces Quads).
A Geometry is a collection of vertices describing a non self-intersecting
(simple) polygon. In addition to screen coordinates, the vertices have
attributes for texture coordinates (s,t) and color (r,g,b,a).

It can be used as a quad, to display distorted images, or anything in between.

Added:
^^^^^^

-- geometry from table, where table has the format:
-- info = {
-- {x,y, s,t, [r = 255, g = 255, b = 255, a = 255]}
-- {x,y, s,t, [r = 255, g = 255, b = 255, a = 255]}
-- ...
-- }
geom = love.graphics.newGeometry(info)

-- convenience wrapper for quads (same as before)
geom = love.graphics.newQuad(x,y, w,h, sw,sh)

-- retrieve vertex i (1-indexed)
x,y,s,t,r,g,b,a = geom:getVertex(i)

-- set vertex i (1-indexed)
geom:setVertex(i, x,y, s,t, [r,g,b,a])

-- flip geometry
geom:flip(x, y)


Renamed:
^^^^^^^^

love.graphics.drawq() -> love.graphics.drawg()


Removed:
^^^^^^^^

quad:setViewport()
quad:getViewport()
2013-04-21 18:53:13 +02:00
Alex Szpakowski bf6d1c258b Misc. code cosmetics and improvements 2013-04-18 02:14:35 -03:00
Alex Szpakowski 3046981fce Added love.math.newRandomGenerator. Returns a RNG object with its own seed and random methods.
--HG--
branch : math-randobject
2013-04-14 23:02:44 -03:00
vrld db86fa4b83 Make love.math.triangulate with any polygon winding order. 2013-03-14 17:21:13 +01:00
vrld 1a407a6af3 Make non-gcc compilers happy... 2013-03-13 23:09:25 +01:00