CODEWITHSUNDEEP
javascriptmath
katie
katie

Reputation: 1041

Find scale amount based on new dimensions

If I have an image that has 100 x 100 size, then I resize it to 200 x 200, how can I calculate how much it was scaled?

In this example the scale amount would be 2.0. How can I get that number from the known variables (original size, new size) ?

Upvotes: 0

Views: 48

Answers (1)

tristantech
tristantech

Reputation: 66

Simply divide the new height by the original height and divide the new width by the original width...

double xfactor = (double)NewImage.Height / (double)OldImage.Height;

double yfactor = (double)NewImage.Width / (double)OldImage.Width;

Upvotes: 1

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