CODEWITHSUNDEEP
c#graphicsrotationclipping
Dested
Dested

Reputation: 6433

Rotate Bitmap (Rectangle) While Maintining Area

How can I rotate an Bitmap a given number of degrees while maintaining the area of the original bitmap. ie, what I rotate a bitmap of Width:100,Height:200, my end result will be a bigger image but the rotated portion will still have an area of 100*200

Upvotes: 2

Views: 1689

Answers (2)

invert
invert

Reputation: 2076

The graphics transform function is perfect for this. Create a new bitmap of the size you want, create a graphics object based off that bitmap, apply the transform then draw onto the canvas (graphics.drawimage(original_image)).

Here is a much better example than I can give at this time.

And Bobpowell.net is a site I usually reference back to for great explanations on transforms.

Upvotes: 2

Mr. Berna
Mr. Berna

Reputation: 10645

I'm confused by this question. Rotation doesn't change scale, so your rectangle will always be 100 x 200 pixels (within the margin of error caused by bitmap rendering). Are you asking how to find the minimum bounding box that will hold a 100 x 200 pixel image rotated at an arbitrary angle? That's been answered elsewhere on Stack Overflow.

Upvotes: 2

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