Select materials in the window.

 
GW. getwinsizex ()
611 -- pick up the value returned by the current window.
1230
GW. getwinsizey ()
396
800

-- It is useful to pick up window Nodes Based on box2.
Ui = boxpicknode (box2 [0, 0] [1000,1000])
# ($ Sphere: sphere01 @ [45.523499, 34.512344, 0.000000], $ sphere: sphere02 @ [12.353422, 22.442947, 0.000000], $ sphere: sphere03 @ [-11.847525, 18.393448, 0.000000], $ sphere: sphere04 @ [-36.874302, 25.021164, 0.000000], $ sphere: sphere05 @ [-110.771210, 314.260803, 0.000000], $ sphere: sphere06 @ [-67.260963, 424.976379, 0.000000])

Select UI
OK

----- The circular pick-up method. The creation of this is different from that above.

--- Insert box2 syntax,

Box2 method application.

<Box2>.X:
Integer

<Box2>.Y:
Integer

<Box2>.W:
Integer

<Box2>.H:
Integer

<Box2>.Left:
Integer, alias of X Property

<Box2>.Right:
Integer

<Box2>.Top:
Integer, alias of Y Property

<Box2>.Bottom
: Integer

<Box2>.Center
: Point2, read-only

Box2 algorithm can be used

<Box2 >=< box2>

<Box2>! = <Box2> you can use logical judgment to determine whether to perform the operation.

Scale <box2> <float>
Scales the coordinates of the box about the center of the box.

Translate <box2> <point2>
Translates the coordinates of the box by the distance specified.

Contains <box2> <point2>
Determines if the point2 value is contained within the box2. returns true if the point is inside the box2 or on the box2 edge; otherwise false.

Rectify <box2>
Adjusts the coordinates of the box such that top <bottom and left <right.

Empty <box2>
Sets the box2 to a special "empty" value.

Isempty <box2>
Returns true if the box2 contains the special "empty" value, false otherwise.

I have never used the above box2 syntax. As information.

Box2 Experiment

Up = box2 0 0 100 100
(Box2 0 0 100 100)
(Box2 0 0 100 100)
Up. Center
[49,49]
99
0
99
99
0

--- It is best to draw a picture of box2 above. It is pixel-based. Therefore, the base point should be.

In this example, my algorithm is that the point2 below him hasRight BottomAdd the Left top algorithm minus 1.

ObtainRight The value of bottom.

 

 

**************************************** **************************************** ****************

Vpcenter = (point2 (GW. getwinsizex () (GW. getwinsizey ()/2
[615,400]
--- The center of the circle in the future.
--- I always find a range.
Circleregion = box2 0 0 0 0 -- initialize circleregion to a box2 Value
(Box2-1-1 2 2)

-- It will be represented with a circle. Here is the center point and the point above the circle.
Circleregion. Left = vpcenter. X -- the center of the circle -- A value is returned.

615.0
-- When we define the left. At this time, we can see that the value of circleregion is (box2-1-1 617 2)
--
-- It should be the first number on the left. Add the following X-1 = 615

Circleregion. Bottom = vpcenter. Y

400.0
---- We defined the bottom to see if circleregion is (box2-1 0 617 401)

Circleregion. Right = vpcenter. X/2 -- a point on the circle
307.5
Circleregion
(Box2 307 0 309 401)

Circleregion. Top = vpcenter. y -- the left and top coordinates of the first group, that is, the origin of the circle.
400.0
Circleregion (box2 307 400 309 1)

--- The above is the last group of coordinates. Bottom is the Y value of the next group, and the radius is determined by the preceding two numbers.
-- This is the case. Take the largest XY point in the attempt as the origin point, and perform parallel operations on X and cross-origin. The value of X is normal.
In this way, the origin and edge are available.

-- To put it bluntly, why can we select objects in the trial with the mouse? This function actually exists. It can be either square or circular.
Oop = for OBJ in (circlepicknode circleregion crossing: false) collect OBJ

# ($ Sphere: sphere01 @ [45.523499, 34.512344, 0.000000], $ sphere: sphere02 @ [12.353422, 22.442947, 0.000000], $ sphere: sphere03 @ [-11.847525, 18.393448, 0.000000], $ sphere: sphere04 @ [-36.874302, 25.021164, 0.000000], $ sphere: sphere05 @ [-110.771210, 314.260803, 0.000000], $ sphere: sphere06 @ [-67.260963, 424.976379, 0.000000])

--- In fact, I still don't understand it.