CODEWITHSUNDEEP
unity-game-engineuser-interfacecanvaswidthrect
Techreator
Techreator

Reputation: 83

Unity 2D: Get the x-axis and width of the rendered UI Image and NOT the values of the rect transform

Unity, I have an image that need enable preserved aspect ratio and I need to get the x-pos & width of the image based on how it was rendered in the screen and NOT the Rect Transform values. I hope you understand may problem. How can I get the x-pos and width of this?

enter image description here

Note: I don't need to use Aspect Ratio Fitter and Content Size Fitter for this situation. I just need those values.

Upvotes: 2

Views: 1347

Answers (1)

nkazz
nkazz

Reputation: 560

.mainTexture.width will give you the pixelsize and with .pixelsPerUnit you can calculate the x poition (assuming that origin in in the middle) and width in units

ignoring the offset that comes with not being at the origin. your calculation should be something like this:

float size = 0;
if ((float)img.sprite.texture.width / transform.GetComponent<RectTransform>().rect.width <
    (float)img.sprite.texture.height / transform.GetComponent<RectTransform>().rect.height)
  {
    size = (img.sprite.texture.width * transform.GetComponent<RectTransform>().rect.height /(float) img.sprite.texture.height);
  }
else
  {
    size = transform.GetComponent<RectTransform>().rect.width;
  }
float x = size * img.pixelsPerUnit  * transform.lossyScale.x;

this calculation should give you the x position (extent) you asked for to get the size you just need to double the value. Also if an image has a higher width then height you need to add additional cases

Upvotes: 0

Related Questions