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bugfix: checking if a point is on a manhattan line

This commit is contained in:
Kartik K. Agaram 2022-05-30 15:27:03 -07:00
parent 26033f40f1
commit 1552efd76d
1 changed files with 19 additions and 1 deletions
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20
geom.lua
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@ -6,7 +6,25 @@ function geom.on_shape(x,y, drawing, shape)
elseif shape.mode == 'line' then
return geom.on_line(x,y, drawing, shape)
elseif shape.mode == 'manhattan' then
return x == drawing.points[shape.p1].x or y == drawing.points[shape.p1].y
local p1 = drawing.points[shape.p1]
local p2 = drawing.points[shape.p2]
if p1.x == p2.x then
if x ~= p1.x then return false end
local y1,y2 = p1.y, p2.y
if y1 > y2 then
y1,y2 = y2,y1
end
return y >= y1*0.95 and y <= y2*1.05
elseif p1.y == p2.y then
if y ~= p1.y then return false end
local x1,x2 = p1.x, p2.x
if x1 > x2 then
x1,x2 = x2,x1
end
return x >= x1*0.95 and x <= x2*1.05
else
assert(false)
end
elseif shape.mode == 'polygon' or shape.mode == 'rectangle' or shape.mode == 'square' then
return geom.on_polygon(x,y, drawing, shape)
elseif shape.mode == 'circle' then