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|
-- For luaJit compatibility.
if table.unpack == nil then
table.unpack = unpack
end
local Vector2 = Vector2 or require( "vector2" )
local Rectangle = {}
local metatable = {
__index = Rectangle,
__tostring = function( r )
return "{"..tostring( r.x )..", "..tostring( r.y )..", "..tostring( r.width )..", "..tostring( r.height ).."}"
end,
__add = function( r1, r2 )
return Rectangle:new( r1.x + r2.x, r1.y + r2.y, r1.width + r2.width, r1.height + r2.height )
end,
__sub = function( r1, r2 )
return Rectangle:new( r1.x - r2.x, r1.y - r2.y, r1.width - r2.width, r1.height - r2.height )
end,
__mul = function( r1, r2 )
return Rectangle:new( r1.x * r2.x, r1.y * r2.y, r1.width * r2.width, r1.height * r2.height )
end,
__div = function( r1, r2 )
return Rectangle:new( r1.x / r2.x, r1.y / r2.y, r1.width / r2.width, r1.height / r2.height )
end,
__mod = function( r, v )
return Rectangle:new( math.fmod( r.x, v ), math.fmod( r.y, v ), math.fmod( r.width, v ), math.fmod( r.height, v ) )
end,
__pow = function( r, v )
return Rectangle:new( r.x ^ v, r.y ^ v, r.width ^ v, r.height ^ v )
end,
__unm = function( r )
return Rectangle:new( -r.x, -r.y, -r.width, -r.height )
end,
__len = function()
return 4
end,
__eq = function( r1, r2 )
return RL.Vector2Equals( { r1.x, r1.y }, { r2.x, r2.y } ) and RL.Vector2Equals( { r1.width, r1.height }, { r2.width, r2.height } )
end,
__concat = function( a, b )
return tostring( a )..tostring( b )
end,
}
function Rectangle:new( x, y, width, height )
local object = setmetatable( {}, metatable )
object.x = x or 0
object.y = y or object.x
object.width = width or 0
object.height = height or object.width
return object
end
function Rectangle:newT( t )
local object = setmetatable( {}, metatable )
object.x, object.y, object.width, object.height = table.unpack( t )
return object
end
function Rectangle:newR( r )
local object = setmetatable( {}, metatable )
object.x = r.x
object.y = r.y
object.width = r.width
object.height = r.height
return object
end
function Rectangle:newV( position, size )
local object = setmetatable( {}, metatable )
object.x = position.x
object.y = position.y
object.width = size.x
object.height = size.y
return object
end
function Rectangle:set( x, y, width, height )
self.x = x or 0
self.y = y or self.x
self.width = width or 0
self.height = height or self.width
end
function Rectangle:setT( t )
self.x, self.y, self.width, self.height = table.unpack( t )
end
function Rectangle:setR( r )
self.x = r.x
self.y = r.y
self.width = r.width
self.height = r.height
end
function Rectangle:setV( position, size )
self.x = position.x
self.y = position.y
self.width = size.x
self.height = size.y
end
function Rectangle:serialize()
return "Rectangle:new("..self.x..","..self.y..","..self.width..","..self.height..")"
end
function Rectangle:arr()
return { self.x, self.y, self.width, self.height }
end
function Rectangle:unpack()
return self.x, self.y, self.width, self.height
end
function Rectangle:clone()
return Rectangle:new( self.x, self.y, self.width, self.height )
end
function Rectangle:scale( scalar )
return Rectangle:new( self.x, self.y, self.width * scalar, self.height * scalar )
end
function Rectangle:min( rec )
return Rectangle:new( self.x, self.y, math.min( self.width, rec.width ), math.min( self.height, rec.height ) )
end
function Rectangle:max( rec )
return Rectangle:new( self.x, self.y, math.max( self.width, rec.width ), math.max( self.height, rec.height ) )
end
function Rectangle:floor()
return Rectangle:new( math.floor( self.x ), math.floor( self.y ), math.floor( self.width ), math.floor( self.height ) )
end
function Rectangle:ceil()
return Rectangle:new( math.ceil( self.x ), math.ceil( self.y ), math.ceil( self.width ), math.ceil( self.height ) )
end
function Rectangle:area()
return self.width * self.height
end
-- Returns rectangle that fits both rectangles inside it
function Rectangle:fit( rec )
local pos = Vector2:new( math.min( self.x, rec.x ), math.min( self.y, rec.y ) )
return Rectangle:new(
pos.x,
pos.y,
math.max( self.x + self.width - pos.x, rec.x + rec.width - pos.x ),
math.max( self.y + self.height - pos.y, rec.y + rec.height - pos.y )
)
end
-- If rectangle is fully inside another rectangle
function Rectangle:isInside( rec )
return rec.x <= self.x and self.x + self.width <= rec.x + rec.width
and rec.y <= self.y and self.y + self.height <= rec.y + rec.height
end
-- Returns clamped rectangle that is inside another rectangle.
function Rectangle:clampInside( rec )
return Rectangle:new(
math.max( rec.x, math.min( self.x, rec.x + rec.width - self.width ) ),
math.max( rec.y, math.min( self.y, rec.y + rec.height - self.height ) ),
self.width,
self.height
)
end
function Rectangle:checkCollisionRec( rec )
return RL.CheckCollisionRecs( self, rec )
end
function Rectangle:checkCollisionCircle( center, radius )
return RL.CheckCollisionCircleRec( center, radius, self )
end
function Rectangle:checkCollisionPoint( point )
return RL.CheckCollisionPointRec( point, self )
end
function Rectangle:getCollisionRec( rec )
return Rectangle:new( RL.GetCollisionRec( self, rec ) )
end
-- Temp pre generated objects to avoid "slow" table generation.
local TEMP_COUNT = 100
local tempPool = {}
local curTemp = 1
for _ = 1, TEMP_COUNT do
table.insert( tempPool, Rectangle:new( 0, 0, 0, 0 ) )
end
function Rectangle:temp( x, y, width, height )
local object = tempPool[ curTemp ]
curTemp = curTemp < TEMP_COUNT and curTemp + 1 or 1
object.x = x or 0
object.y = y or object.x
object.width = width or 0
object.height = height or object.width
return object
end
function Rectangle:tempT( t )
local object = tempPool[ curTemp ]
curTemp = curTemp < TEMP_COUNT and curTemp + 1 or 1
object.x, object.y, object.width, object.height = table.unpack( t )
return object
end
function Rectangle:tempR( r )
local object = tempPool[ curTemp ]
curTemp = curTemp < TEMP_COUNT and curTemp + 1 or 1
object.x = r.x
object.y = r.y
object.width = r.width
object.height = r.height
return object
end
function Rectangle:tempV( position, size )
local object = tempPool[ curTemp ]
curTemp = curTemp < TEMP_COUNT and curTemp + 1 or 1
object.x = position.x
object.y = position.y
object.width = size.x
object.height = size.y
return object
end
function Rectangle:getTempId()
return curTemp
end
return Rectangle
|
