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How to populate an SKShapeNode uniformly


How to populate an SKShapeNode uniformly

By : Haresh Rathod
Date : November 22 2020, 02:59 PM
help you fix your problem Instead of let x = CGFloat(arc4random_uniform(UInt32(size.width * 20))) - size.width / 4 let y = CGFloat(arc4random_uniform(UInt32(size.height * 90))) - size.height / 100 you define how you want your x to be placed, for example:
code :
let x = (i * size.width)
let y = 0


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How do I create and populate a non-uniformly structured array in PHP?

How do I create and populate a non-uniformly structured array in PHP?


By : user1918644
Date : March 29 2020, 07:55 AM
hope this fix your issue Keep your data structure simple and easy to understand. Worry about the complexity when you operate on it.
Consider a structure like:
code :
<?PHP
$usageData = array(
  'December' => array(
    'policy' => array(
      'Basic'=>50,
      'Extended'=>25,
      'Premium'=>25
    )
  ),
  'January' => array(
    'policy'=> array(
      'Basic'=>50
    )
  )
);
<?PHP
function report($usage){
  foreach($usage as $month=>$data){
    if (count($data) > 1){
      echo "{$month}\t..\t" . array_sum($data). "\n";
    }
    foreach($data as $policy=>$usage){
      echo "{$month}\t{$policy}\t{$usage}\n";
    }
  }
}
Method to uniformly randomly populate a disk with points in python

Method to uniformly randomly populate a disk with points in python


By : user2924280
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , If you have a defined area like a disc (circle) that you wish to generate random points within you are better off using an equation for a circle and limiting on the radius:
code :
x^2 + y^2 = r^2  (0 < r < R)
cos(a) = x/r
sin(a) = y/r
sin^2(a) + cos^2(a) = 1
d(Area,n,n-1) = Area(n) - Area(n-1)
Area = pi*(dr*n)^2 - pi*(dr*(n-1))
d(Area,n,n-1) = [pi*(dr*n)^2 - pi*(dr*(n-1))^2] - [pi*(dr*(n-1))^2 - pi*(dr*(n-2))^2]
d(Area,n,n-1) = pi*[(dr*n)^2 - 2*(dr*(n-1))^2 + (dr*(n-2))^2]
import random
import math

R = 10.
n_rings = 10.
n_angles = 10.
dr = 10./n_rings
da = 2*math.pi/n_angles

base_points_per_division = 3
increase_per_level = 1.1
points = []
ring = 0
while ring < n_rings:
    angle = 0
    while angle < n_angles:
        for i in xrange(int(base_points_per_division)):
             ra = angle*da + da*math.random()
             rr = r*dr + dr*random.random()
             x = rr*math.cos(ra)
             y = rr*math.sin(ra)
             points.append((x,y))
        angle += 1
    base_points_per_division = base_points_per_division*increase_per_level
    ring += 1
n_rings = 20
n_angles = 20
base_points = .9
increase_per_level = 1.1
density = .03
points = []
ring = 0
while ring < n_rings:
    angle = 0
    base_points_per_division = density*math.pi*(dr**2)*(2*ring+1)/n_angles
    while angle < n_angles:
        for i in xrange(int(base_points_per_division)):
             ra = angle*da + min(da,da*random.random())
             rr = ring*dr + dr*random.random()
             x = rr*math.cos(ra)
             y = rr*math.sin(ra)
             points.append((x,y))
        angle += 1
    ring += 1
R = 1.
n_rings = 10.
n_angles = 10.
density = 10/(dr*da)   # ~ ten points per unit area
Add SKShapeNode in another one

Add SKShapeNode in another one


By : user3802489
Date : March 29 2020, 07:55 AM
around this issue You should use SKSpriteNode instead. That way you can add it easily and without setting the position manually. Because in an SKSpriteNode, the center is always the center of the node:
code :
var tileBackground = SKSpriteNode(color: UIColor.whiteColor(), size: CGSizeMake(width: screenWidth, height: screenWidth))
tileBackground.name = "tileBackground"
tileBackground.position = CGPoint(x: frame.midX, y: frame.midY);
self.addChild(tileBackground)


var tile = SKSpriteNode(color: UIColor.redColor(), size: CGSize(width: tileSize, height: tileSize))
tile.name = "tile1"
tileBackground.addChild(tile)
SKShapeNode: How to set String to name of SKShapeNode

SKShapeNode: How to set String to name of SKShapeNode


By : user2357174
Date : March 29 2020, 07:55 AM
this will help You can use this as an attribute of any SKNodeand therefore any SKShapeNode.
You can use <#SKNode#>.name = "Any name" to set it.
code :
var node = SKShapeNode(rectOf: CGSize(width: 30, height: 30))
node.name = "Bob"

print(node.name)
SKShapeNode not working on IOS 7

SKShapeNode not working on IOS 7


By : Kushal Pandya
Date : March 29 2020, 07:55 AM
wish of those help This functionality is not available in iOS 7. It is only iOS 8 and later.
SKShapeNode Reference
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