CODEWITHSUNDEEP
javamathlibgdx
Rohan
Rohan

Reputation: 563

Changing position of origin (0,0) and all relative points

According to LibGDX's coordinate system, (0, 0) is the bottom left corner. I would like to be able to specify where (0, 0) is in world coordinates.

example

In the picture, the point (200, 200) is relative to the zero in the bottom left corner. How can I (mathematically or built-in function) change the coordinates to be relative to the other zero?

The I have the coordinates of the second zero relative to the zero in the bottom left corner, and for this purpose let's set it to (800, 500)

Upvotes: 1

Views: 1288

Answers (2)

the4naves
the4naves

Reputation: 363

Sorry if I'm misunderstanding your question, but you should just be able to add the new "0" to your coordinates.

As an example, to modify the point (200, 200) to be relative to (800, 500) you would change it to (1000, 700), or (200 + 800, 200 + 500).

Upvotes: 0

PR06GR4MM3R
PR06GR4MM3R

Reputation: 397

Simply find the distance between (200, 200) and (800, 500) before you set the new zero.

x distance: x1 - x2

y distance: y1 - y2

xDist = 200 - 800 = -600

yDist = 200 - 500 = -300

So your new point in relation to the new zero is (-600, -300).

Upvotes: 1

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