Difference between revisions of "BezierCurve:evaluate"
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Get list of coordinate pairs: | Get list of coordinate pairs: | ||
<source lang="lua"> | <source lang="lua"> | ||
− | + | BezierCurve = love.math.newBezierCurve({25,25, 25,125, 75,25, 125,25}) | |
local list = {} | local list = {} | ||
local subdivisions = 2^3 | local subdivisions = 2^3 | ||
− | + | line = {} | |
for i = 0, subdivisions do | for i = 0, subdivisions do | ||
local t = i/subdivisions | local t = i/subdivisions |
Revision as of 13:58, 21 November 2021
Available since LÖVE 0.9.0 |
This function is not supported in earlier versions. |
Evaluate Bézier curve at parameter t. The parameter must be between 0 and 1 (inclusive).
This function can be used to move objects along paths or tween parameters. However it should not be used to render the curve, see BezierCurve:render for that purpose.
Function
Synopsis
x,y = BezierCurve:evaluate(t)
Arguments
number t
- Where to evaluate the curve.
Returns
number x
- x coordinate of the curve at parameter t.
number y
- y coordinate of the curve at parameter t.
Example
Get list of coordinate pairs:
BezierCurve = love.math.newBezierCurve({25,25, 25,125, 75,25, 125,25})
local list = {}
local subdivisions = 2^3
line = {}
for i = 0, subdivisions do
local t = i/subdivisions
print (t)
local x, y = BezierCurve:evaluate(t)
table.insert (line, x)
table.insert (line, y)
end
love.graphics.line(line)
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