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114 lines
2.2 KiB
114 lines
2.2 KiB
co = co or {}
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local co = co
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local CoVector2 = CoVector2
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local math = math
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--返回一个CoVector2
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function co.Vector2(x, y)
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-- print(debug.traceback(""))
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-- print("111111111111co.Vector2")
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return CoVector2.New(x, y)
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end
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co.free_vector2_list = co.free_vector2_list or {}
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co.free_vector2_num = co.free_vector2_num or 0
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function co.TempVector2(x, y)
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local free_num = co.free_vector2_num
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-- print("获取TempVector2:", free_num)
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if free_num > 0 then
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local v = co.free_vector2_list[free_num]
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co.free_vector2_list[free_num] = nil
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co.free_vector2_num = free_num - 1
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v.x, v.y = x, y
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return v
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else
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local v = CoVector2.New(x, y)
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return v
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end
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end
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function co.InitTempVectorArray()
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for i=co.free_vector2_num, 90 do
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local v = CoVector2.New(0, 0)
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v:DeleteV()
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end
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end
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function co.Vector2FromTable(t)
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return CoVector2.New(t.x, t.y)
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end
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function co.RadianToDegree(radian)
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return radian / math.pi * 180
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end
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function co.DegreeToRadian(degree)
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return degree / 180 * math.pi
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end
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function co.TableXY(x, y)
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return {x=x, y=y}
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end
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function co.PointDistance(t1, t2)
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local xl = math.abs(t1.x - t2.x)
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local yl = math.abs(t1.y - t2.y)
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return math.sqrt(xl*xl + yl*yl)
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end
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function co.TableXYZ(x, y, z)
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return {x=x, y=y, z=z}
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end
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function co.TableXYFromPos(pos)
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return {x=pos.x, y=pos.y}
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end
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--把一个{x=.., y=..}的table归1化
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function co.NormaliseXYTable(v)
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local l = math.sqrt(v.x * v.x + v.y * v.y)
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if l >= 1e-6 then
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local f = 1 / l
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v.x = v.x * f
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v.y = v.y * f
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end
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return l
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end
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--把一个{x=.., y=..},z=..的table归1化
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function co.NormaliseXYZTable(v)
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local l = math.sqrt(v.x * v.x + v.y * v.y + v.z*v.z)
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if l >= 1e-6 then
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local f = 1 / l
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v.x = v.x * f
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v.y = v.y * f
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v.z = v.z * f
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end
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return l
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end
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function co.MulXYTable(t1, t2)
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return {x = t1.x*t2.x, y = t1.y*t2.y}
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end
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function co.SubtractXYTable(t1, t2 )
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return {x=t1.x-t2.x, y=t1.y-t2.y}
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end
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function co.AddXY(t1, t2 )
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return {x= t1.x + t2.x, y = t1.y+t2.y}
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end
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function co.AddXYZ(t1, t2 )
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return {x= t1.x + t2.x, y = t1.y+t2.y, z = t1.z + t2.z}
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end
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function co.MoveXYTable(t1, dir, dist)
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t1.x = t1.x + dir.x * dist
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t1.y = t1.y + dir.y * dist
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end
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co.NegativeYAix = co.Vector2(0, -1)
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co.XAix = co.Vector2(1, 0)
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