Revision Difference
math.BSplinePoint#511587
<function name="BSplinePoint" parent="math" type="libraryfunc">⤶
<description>Basic code for algorithm.</description>⤶
<realm>Shared and Menu</realm>⤶
<file line="138-L154">lua/includes/extensions/math.lua</file>⤶
<args>⤶
<arg name="tDiff" type="number">From 0 to 1, where alongside the spline the point will be.</arg>⤶
<arg name="tPoints" type="table">A table of <page>Vector</page>s. The amount cannot be less than 4.</arg>⤶
<arg name="tMax" type="number">Just leave this at 1.</arg>⤶
</args>⤶
<rets>⤶
<ret name="" type="Vector">Point on Bezier curve, related to tDiff.</ret>⤶
</rets>⤶
</function>⤶
⤶
<example>⤶
<description>Example usage of the function, makes a black box moving along the beizer curve made out of 4 points</description>⤶
<code>⤶
local points = { Vector( 100, 100, 0 ), Vector( 200, 200, 0 ), Vector( 300, 100, 0 ), Vector( 400, 200, 0 ) }⤶
hook.Add( "HUDPaint", "BSplinePointExample", function()⤶
-- Draw the points⤶
for id, p in pairs( points ) do⤶
draw.RoundedBox( 0, p.x - 2, p.y - 2, 4, 4, color_white )⤶
end⤶
⤶
-- Draw the spline⤶
local pos = math.BSplinePoint( ( math.cos( CurTime() ) + 1 ) / 2, points, 1 )⤶
draw.RoundedBox( 0, pos.x - 2, pos.y - 2, 4, 4, Color( 0, 0, 0 ) )⤶
end )⤶
</code>⤶
⤶
</example>