Currently the images are decoded at their original resolution.

Even though BitmapExt provides bitmap resizing capabilities, sometimes it doesn't make sense to decode images at original resolution first especially when they're large.

Hello. Help me, please, with this question: I need every time I get an image, reduce it to a certain size (32Kb). I wrote such code. But I would like as much as possible Optimize loss of quality and border design. Maybe you tell me the best option? Here is my code:

private suspend fun getImmage32Kb(imageData: Bitmap32): ByteArray? { var bb: ByteArray? = null var image32: Bitmap32 = imageData var image16 = Bitmap16(width = image32.width, height = image32.height, format = RGB_565, premultiplied = false) val ex = ImageEncodingProps() bb = image32.encode(PNG, ex) val AVATAR_SIZE = 32768 if (bb.size <= AVATAR_SIZE) return bb else bb = null image32.forEach { _, x, y -> image16.setRgba(x = x, y = y, v = image32.getRgba(x = x, y = y)) } image32 = image16.toBMP32() GlobalScope.launch { var im_width = image32.width var im_heigth = image32.height var koef: Float val avatar = AVATAR_SIZE.toFloat() while (bb == null || bb!!.size > AVATAR_SIZE) { image32.forEach { _, x, y -> image16.setRgba(x = x, y = y, v = image32.getRgba(x = x, y = y)) } bb = image16.encode(PNG, ex) if (bb!!.size <= AVATAR_SIZE) break val percent = (bb!!.size / avatar) koef = if (percent >= 2.5F) { 1F } else { 0.98F } if (koef == 1F) {
image32 = image32.mipmap(1)

            } else {
                im_width = (im_width * koef).toInt()
                im_heigth = (im_heigth * koef).toInt()
                image32 = image32.copySliceWithSize(
                    (image32.width - im_width) / 2,
                    (image32.height - im_heigth) / 2,
                    im_width,
                    im_heigth
                )

            }
            im_width = image32.width
            im_heigth = image32.height
            image16 =
                Bitmap16(width = im_width, height = im_heigth, format = RGB_565, premultiplied = false)
        }

    }.join()
    return bb
}

What would be the proper way to load a TTF file? As far as I understand, the current implementation of BitmapFontGenerator relies on the font being installed on the system - which might not be the case. I guess we can assume that it's possible to get a VfsFile pointing to a TTF file - it should be possible from there to generate a bitmap font.

I've tried going through the docs. But, I'm a bit confused. What would be the best way to load an image from ios's CMSampleBuffer or a CMSampleBuffer dumped into a ByteArray?

Hi I am trying to decompress a .imy file in a game called Criminal Girls and I found this script you made, but when I try to run this script I get "kotlin.NotImplementedError" in ImageFormat.kt How do I fix this?

script : https://github.com/talestra/talestrakt/blob/master/game-criminalgirls/src/com/talestra/criminalgirls/CriminalGirls.kt error log : https://pastebin.com/NmL4adu2

There is an image whose width is less than height. If I read the image and write it back, the image flips 90 °.

" fun getImmage() {

    val fileName = resourcesVfs["SomeImage.jpg"]
    val image32 = fileName.readBitmap().toBMP32()
    val resfile = resourcesVfs["ResImage.jpg"]
    resfile.writeBytes(image32.encode(PNG))
}

" 11.zip

I'm trying to read the quantization tables of a JPEG file on Android. It seems that JPEGDecoder reads the quantization tables.

But I'm still a beginner with Kotlin so I haven't yet figured out how I go from a string with the path to the JPEG file to printing out the quantization tables.

(Also asked on Stackoverflow)

Thanks in advance!

After Upgrading from Korge 1.10.0.0 to 1.12.2.0 my HitKlack Game doesn't run on JS target anymore. https://github.com/TobseF/HitKlack/tree/UpgradeKorge Platform: jsWebRun

DOMException: Failed to execute 'getImageData' on 'CanvasRenderingContext2D': The source width is 0.

Stacktrace

OpenglAG: Created program BatchBuilder2D.Premultiplied.Tinted with id 3 because contextVersion: -1 != 0
korio-root-korio.js:45410 DOMException: Failed to execute 'getImageData' on 'CanvasRenderingContext2D': The source width is 0.
    at HtmlImage.renderHtmlCanvasIntoBitmap_x25gtl$ (http://127.0.0.1:9040/korim-root-korim.js:21434:20)
    at HtmlNativeImage.toNonNativeBmp (http://127.0.0.1:9040/korim-root-korim.js:21507:29)
    at HtmlNativeImage.NativeImage.toBMP32 (http://127.0.0.1:9040/korim-root-korim.js:2393:17)
    at new BitmapFont$Glyph (http://127.0.0.1:9040/korim-root-korim.js:6470:39)
    at Coroutine$readBitmapFontTxt.doResume (http://127.0.0.1:9040/korim-root-korim.js:6799:33)
    at Coroutine$loadImage_ivxn3r$.CoroutineImpl.resumeWith_tl1gpc$ (http://127.0.0.1:9040/kotlin.js:29534:35)
    at CancellableContinuationImpl.DispatchedTask.run (http://127.0.0.1:9040/kotlinx-coroutines-core.js:32877:22)
    at GameWindowCoroutineDispatcher.executePending_p8meis$ (http://127.0.0.1:9040/korgw-root-korgw.js:12387:30)
    at http://127.0.0.1:9040/korgw-root-korgw.js:15364:52
printStackTrace_0 @ korio-root-korio.js:45410
korio-root-korio.js:45411 Error: Failed to execute 'getImageData' on 'CanvasRenderingContext2D': The source width is 0.
    at HtmlImage.renderHtmlCanvasIntoBitmap_x25gtl$ (korim-root-korim.js:21434)
    at HtmlNativeImage.toNonNativeBmp (korim-root-korim.js:21507)
    at HtmlNativeImage.NativeImage.toBMP32 (korim-root-korim.js:2393)
    at new BitmapFont$Glyph (korim-root-korim.js:6470)
    at Coroutine$readBitmapFontTxt.doResume (korim-root-korim.js:6799)
    at Coroutine$loadImage_ivxn3r$.CoroutineImpl.resumeWith_tl1gpc$ (kotlin.js:29534)
    at CancellableContinuationImpl.DispatchedTask.run (kotlinx-coroutines-core.js:32877)
    at GameWindowCoroutineDispatcher.executePending_p8meis$ (korgw-root-korgw.js:12387)
    at korgw-root-korgw.js:15364
printStackTrace_0 @ korio-root-korio.js:45411
kotlinx-coroutines-core.js:35845 DOMException: Failed to execute 'getImageData' on 'CanvasRenderingContext2D': The source width is 0.
    at HtmlImage.renderHtmlCanvasIntoBitmap_x25gtl$ (http://127.0.0.1:9040/korim-root-korim.js:21434:20)
    at HtmlNativeImage.toNonNativeBmp (http://127.0.0.1:9040/korim-root-korim.js:21507:29)
    at HtmlNativeImage.NativeImage.toBMP32 (http://127.0.0.1:9040/korim-root-korim.js:2393:17)
    at new BitmapFont$Glyph (http://127.0.0.1:9040/korim-root-korim.js:6470:39)
    at Coroutine$readBitmapFontTxt.doResume (http://127.0.0.1:9040/korim-root-korim.js:6799:33)
    at Coroutine$loadImage_ivxn3r$.CoroutineImpl.resumeWith_tl1gpc$ (http://127.0.0.1:9040/kotlin.js:29534:35)
    at CancellableContinuationImpl.DispatchedTask.run (http://127.0.0.1:9040/kotlinx-coroutines-core.js:32877:22)
    at GameWindowCoroutineDispatcher.executePending_p8meis$ (http://127.0.0.1:9040/korgw-root-korgw.js:12387:30)
    at http://127.0.0.1:9040/korgw-root-korgw.js:15364:52
handleCoroutineExceptionImpl @ kotlinx-coroutines-core.js:35845
kotlin.js:32459 OpenglAG: Created program BatchBuilder2D.NoPremultiplied.Tinted with id 13 because contextVersion: -1 != 0

BitmapIndexed.toBMP32() throws an java.lang.ArrayIndexOutOfBoundsException for bpp smaller than 8.

Minimal repro:

val bpp4 = Bitmap4(2, 1)
bpp4[0, 0] = 1
bpp4[1, 0] = 1
bpp4.palette = RgbaArray(16)
bpp4.toBMP32()

Allow to apply glow, border and drop shadow effects to Bitmap32 / maybe Context2D too? This will enable new use-cases including creating better BitmapFonts at runtime or directly rendering stuff to bitmaps/textures

This should draw the circle translated. So we should apply the translation matrix when drawing the points directly.

keep {
    translate(100, 0)
    circle(0, 0, 50)
}
fill()