Gamebuino Meta Rotate and flip Image

English / Anglais
1

Is there any way to Rotate or Flip horizontally/vertically Image by drawImage function? I cannot see any options in the api reference.

2

You can flip images horizontally and vertically with this version of the drawImage() function:

void drawImage(int16_t x, int16_t y, Image& img, int16_t w2, int16_t h2);

You just have to use negative values for w2 and/or h2.

For the rotations, you will have to code them by yourself… :confused:

But you can take inspiration from the work of @bfx for this.

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3

Omg that’s exactly what I was looking for :smiley: In my new project i have a lot of image arrays which are only ‘mirrors’ of the current sprites. Now I can remove them to save a lot sketch and memory place using this little trick. Thank you so much for solution @Steph :slight_smile:

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4

Yes, this is precisely the trick to apply to drastically reduce the number of sprites or tiles. And don’t declare your images as global variables to save RAM!

Take a look at this tutorial. You might find some other tips. :eyes:

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5

I also recommend the tutorial made and linked here by @Steph. It has helped me a lot so far, getting acquainted with the platform.

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6

API documentation updated :wink:

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