first commit
This commit is contained in:
294
src/Segment.lua
Normal file
294
src/Segment.lua
Normal file
@@ -0,0 +1,294 @@
|
||||
-- require('mobdebug').start()
|
||||
|
||||
Segment = Class{}
|
||||
|
||||
local symbols = {['up'] = 207, ['down'] = 209, ['right'] = 199, ['left'] = 182}
|
||||
|
||||
function Segment:init(firstPoint, secondPoint,lineWidth, face, color)
|
||||
self.firstPointX = firstPoint[1]
|
||||
self.firstPointY = firstPoint[2]
|
||||
self.secondPointX = secondPoint[1]
|
||||
self.secondPointY = secondPoint[2]
|
||||
self.lineWidth = lineWidth or 3
|
||||
self.vertical = self.firstPointX == self.secondPointX
|
||||
self.horizontal = self.firstPointY == self.secondPointY
|
||||
self.face = face or ''
|
||||
self.direction = self:calculateDirection()
|
||||
self.color = color or {r=255,g=255,b=255}
|
||||
end
|
||||
|
||||
function Segment:render()
|
||||
love.graphics.setColor(self.color.r,self.color.g, self.color.b,255)
|
||||
love.graphics.setLineWidth(self.lineWidth)
|
||||
love.graphics.line(self.firstPointX,self.firstPointY,self.secondPointX, self.secondPointY)
|
||||
|
||||
love.graphics.setColor(255,255, 255, 255)
|
||||
|
||||
-- debug
|
||||
-- love.graphics.setFont(gFonts['small'])
|
||||
-- love.graphics.printf(self.face,self.firstPointX + 2, self.firstPointY + 2 / 2,25,'left' )
|
||||
|
||||
end
|
||||
|
||||
function Segment:segmentToPoints()
|
||||
return self.firstPointX, self.firstPointY, self.secondPointX, self.secondPointY
|
||||
end
|
||||
|
||||
function Segment:length()
|
||||
return math.sqrt( (self.secondPointX - self.firstPointX) * (self.secondPointX - self.firstPointX) + (self.secondPointY - self.firstPointY) * (self.secondPointY - self.firstPointY) )
|
||||
end
|
||||
|
||||
function Segment:sideOfSegment(x,y)
|
||||
if y < self.firstPointY and y < self.secondPointY then -- above
|
||||
return 'up'
|
||||
end
|
||||
if y > self.firstPointY and y > self.secondPointY then -- below
|
||||
return 'down'
|
||||
end
|
||||
if x < self.firstPointX and x < self.secondPointX then -- left
|
||||
return 'left'
|
||||
end
|
||||
if x > self.firstPointX and x > self.secondPointX then -- right
|
||||
return 'right'
|
||||
end
|
||||
|
||||
end
|
||||
|
||||
function Segment:debug(msg)
|
||||
if not msg then
|
||||
msg = ''
|
||||
end
|
||||
-- print("Segment:debug ".. msg .." ...............")
|
||||
-- print("FirstPoint: "..tostring(self.firstPointX)..','..tostring(self.firstPointY))
|
||||
-- print("SecondPoint: "..tostring(self.secondPointX)..','..tostring(self.secondPointY))
|
||||
-- print("face: "..self.face.. ' - Direction: '..self.direction)
|
||||
end
|
||||
|
||||
function Segment:copy()
|
||||
local copy = {}
|
||||
copy.firstPointX = self.firstPointX
|
||||
copy.firstPointY = self.firstPointY
|
||||
copy.secondPointX = self.secondPointX
|
||||
copy.secondPointY = self.secondPointY
|
||||
copy.lineWidth = self.lineWidth
|
||||
copy.face = self.face
|
||||
return Segment({copy.firstPointX,copy.firstPointY},{copy.secondPointX,copy.secondPointY},copy.lineWidth, copy.face)
|
||||
end
|
||||
|
||||
function Segment:endEqualsStartOf(s)
|
||||
-- segments are linked at the end of this one
|
||||
if self.secondPointX == s.firstPointX and
|
||||
self.secondPointY == s.firstPointY then
|
||||
return true
|
||||
end
|
||||
return false
|
||||
end
|
||||
function Segment:endEqualsEndOf(s)
|
||||
-- segments are linked at the end of this one
|
||||
if self.secondPointX == s.secondPointX and self.secondPointY == s.secondPointY then
|
||||
return true
|
||||
end
|
||||
return false
|
||||
end
|
||||
|
||||
function Segment:startEqualsEndOf(s)
|
||||
-- segments are linked at the beginning of this one
|
||||
if self.firstPointX == s.secondPointX and self.firstPointY == s.secondPointY then
|
||||
return true
|
||||
end
|
||||
return false
|
||||
end
|
||||
function Segment:startEqualsStartOf(s)
|
||||
-- segments are linked at the beginning of this one
|
||||
if self.firstPointX == s.firstPointX and self.firstPointY == s.PointY then
|
||||
return true
|
||||
end
|
||||
return false
|
||||
end
|
||||
|
||||
function Segment:calculateDirection()
|
||||
local dir = ''
|
||||
|
||||
if self.vertical then
|
||||
if self.firstPointY < self.secondPointY then
|
||||
dir = 'down'
|
||||
else
|
||||
dir = 'up'
|
||||
end
|
||||
else
|
||||
if self.firstPointX < self.secondPointX then
|
||||
dir = 'right'
|
||||
else
|
||||
dir = 'left'
|
||||
end
|
||||
end
|
||||
return dir
|
||||
end
|
||||
|
||||
function Segment:splitInTwoWithPoint(point) -- number
|
||||
local s1, s2 = {}
|
||||
if point > 0 then
|
||||
if self.vertical then
|
||||
s1 = Segment(
|
||||
{self.firstPointX, self.firstPointY},
|
||||
{self.secondPointX, point},
|
||||
self.lineWidth, self.face
|
||||
)
|
||||
s2 = Segment(
|
||||
{self.firstPointX, point},
|
||||
{self.secondPointX,self.secondPointY},
|
||||
self.lineWidth, self.face
|
||||
)
|
||||
else
|
||||
s1 = Segment(
|
||||
{self.firstPointX, self.firstPointY},
|
||||
{point, self.secondPointY},
|
||||
self.lineWidth, self.face
|
||||
)
|
||||
s2 = Segment(
|
||||
{point, self.firstPointY},
|
||||
{self.secondPointX,self.secondPointY},
|
||||
self.lineWidth, self.face
|
||||
)
|
||||
end
|
||||
else
|
||||
return nil, nil
|
||||
end
|
||||
|
||||
return s1, s2
|
||||
end
|
||||
|
||||
function Segment:splitInTwoWithSegment(segment)
|
||||
local point = 0
|
||||
if self.vertical then
|
||||
if self.firstPointY == segment.firstPointY then
|
||||
point = segment.firstPointY
|
||||
else
|
||||
point = segment.secondPointY
|
||||
end
|
||||
elseif self.horizontal then
|
||||
if self.firstPointX == segment.firstPointX then
|
||||
point = segment.firstPointX
|
||||
else
|
||||
point = segment.secondPointX
|
||||
end
|
||||
end
|
||||
|
||||
return self:splitInTwoWithPoint(point)
|
||||
end
|
||||
|
||||
function Segment:joinPerpendicular(s)
|
||||
-- changes the self, not the parameter
|
||||
if s.vertical then
|
||||
local sx = s.firstPointX
|
||||
if math.abs(self.firstPointX - sx) <
|
||||
math.abs(self.secondPointX - sx) then
|
||||
self.firstPointX = sx
|
||||
else
|
||||
self.secondPointX = sx
|
||||
end
|
||||
else
|
||||
local sy = s.firstPointY
|
||||
if math.abs(self.firstPointY - sy) <
|
||||
math.abs(self.secondPointY - sy) then
|
||||
self.firstPointY = sy
|
||||
else
|
||||
self.secondPointY = sy
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
function Segment:switchDirection()
|
||||
local temp = {}
|
||||
temp.firstPointX = self.firstPointX
|
||||
temp.firstPointY = self.firstPointY
|
||||
self.firstPointX = self.secondPointX
|
||||
self.firstPointY = self.secondPointY
|
||||
self.secondPointX = temp.firstPointX
|
||||
self.secondPointY = temp.firstPointY
|
||||
self:notDirection()
|
||||
end
|
||||
|
||||
function Segment:notDirection()
|
||||
if self.direction == 'down' then
|
||||
self.direction = 'up'
|
||||
elseif self.direction == 'up' then
|
||||
self.direction = 'down'
|
||||
elseif self.direction == 'right' then
|
||||
self.direction = 'left'
|
||||
elseif self.direction == 'left' then
|
||||
self.direction = 'right'
|
||||
end
|
||||
end
|
||||
|
||||
function Segment:notFace()
|
||||
if self.face == 'up' then
|
||||
self.face = 'down'
|
||||
elseif self.face == 'down' then
|
||||
self.face = 'up'
|
||||
elseif self.face == 'right' then
|
||||
self.face = 'left'
|
||||
elseif self.face == 'left' then
|
||||
self.face = 'right'
|
||||
end
|
||||
end
|
||||
|
||||
function Segment:joinContiguous(s)
|
||||
-- second segment becomes part of first one
|
||||
if self.vertical then
|
||||
self.secondPointY = s.secondPointY
|
||||
else
|
||||
self.secondPointX = s.secondPointX
|
||||
end
|
||||
end
|
||||
|
||||
function Segment:compare(s)
|
||||
-- returns >0 if self is to the right or below
|
||||
-- returns <0 if self is to the left or above
|
||||
-- returns 0 if both are same point
|
||||
if self.vertical and s.vertical then
|
||||
if self.firstPointX == s.firstPointX then
|
||||
return 0
|
||||
else
|
||||
return self.firstPointX - s.firstPointX
|
||||
end
|
||||
elseif self.horizontal and s.horizontal then
|
||||
if self.firstPointY == s.firstPointY then
|
||||
return 0
|
||||
else
|
||||
return self.firstPointY - s.firstPointY
|
||||
end
|
||||
else
|
||||
return (self.firstPointX + self.firstPointY +
|
||||
self.secondPointX + self.secondPointY) - (
|
||||
s.firstPointX + s.firstPointY + s.secondPointX
|
||||
+s.secondPointY)
|
||||
end
|
||||
end
|
||||
|
||||
function Segment:splitInThreeWithSegments(s1,s2)
|
||||
local p1, p2, p3, t = {}
|
||||
if self.direction == 'down' or self.direction == 'right' then
|
||||
if s1:compare(s2) < 0 then
|
||||
p1, t = self:splitInTwoWithSegment(s1)
|
||||
p2, p3 = t:splitInTwoWithSegment(s2)
|
||||
else
|
||||
p1, t = self:splitInTwoWithSegment(s2)
|
||||
p2, p3 = t:splitInTwoWithSegment(s1)
|
||||
end
|
||||
else
|
||||
if s1:compare(s2) < 0 then
|
||||
p1, t = self:splitInTwoWithSegment(s2)
|
||||
p2, p3 = t:splitInTwoWithSegment(s1)
|
||||
else
|
||||
p1, t = self:splitInTwoWithSegment(s1)
|
||||
p2, p3 = t:splitInTwoWithSegment(s2)
|
||||
end
|
||||
end
|
||||
|
||||
return p1,p2,p3
|
||||
end
|
||||
|
||||
function Segment:insert(list)
|
||||
|
||||
end
|
||||
Reference in New Issue
Block a user