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PocketMatrix • View topic - how to scale an image
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how to scale an image


how to scale an image

Postby akabeer1983 » Feb 3, 2009 @ 7:35am

Hi,
i am programming for iPhone, i want to scale an image, based on user's touch (touch one corner of image and drag it).
how can i scale the image.
i tried the following, but it displays nothing:

//member variables declaration part
E2DBLTFX bltfx;

//constructor
bltfx.xscale = 3;
bltfx.yscale = 3;

//OnNextFrame function
display -> BltFx(10, 10, image, &rect, &bltfx);


But there wsa no problem with rendering the image normally:
display -> BltFast(100, 100, image, &rect)
the above statement displays the image properly.
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Postby edge » Feb 3, 2009 @ 8:43am

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Postby akabeer1983 » Feb 3, 2009 @ 8:43am

akabeer1983
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Postby akabeer1983 » Feb 3, 2009 @ 8:46am

akabeer1983
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