Svenska ElektronikForumet

Kod: Markera allt

//widthScaled is the width of the image on screen
//heightScaled is the height on the smallest side.
// |<wScale>|
// .-----,___    __
// |            |     ^ heightScaled
// |       ___|   __V
// '-----´
//

void putImageTransform(unsigned char xPos, unsigned char yPos, unsigned int widthScaled, unsigned int heightScaled, char *path, unsigned char direction) {
    FIL imageFile;
    unsigned char width, height, start, padding = 0, y, x;
    unsigned short pixel_buff[98];
    unsigned int tmp;
    unsigned char pixelCntr = 0;
    unsigned int scaleFactor = 0, scaleFactorX = 0, scaleFactorPixelIndex = 0, xReal, xRealStep;

    if (!widthScaled)
        return;

    if (f_open(&imageFile, path, FA_READ))
        return;
    f_lseek(&imageFile, 0x12);
    f_read(&imageFile, &width, 1, &tmp);
    f_lseek(&imageFile, 0x16);
    f_read(&imageFile, &height, 1, &tmp);
    f_lseek(&imageFile, 0x0A);
    f_read(&imageFile, &start, 1, &tmp);
    f_lseek(&imageFile, start);



    oledCommand(0xA0);
    oledCommand(0x62);
    oledCommand(0x15);
    oledCommand(xPos);
    oledCommand(xPos + widthScaled - 1);
    oledCommand(0x75);
    oledCommand(yPos);
    oledCommand(yPos + height - 1);

    oledCommand(0xA0);
    oledCommand(0x63);

    if (width & 1)
        padding = 1;

    OLED_CE = 0;


    xReal = 0;
    xRealStep = (widthScaled * 128) / (width);
    scaleFactor = (128 - ((heightScaled * 128) / height)) / 2;
    for (x = 0; x < width; x++) {
        f_read(&imageFile, pixel_buff, (width + padding) * 2, &tmp);
        xReal += xRealStep;
        if (xReal >= 128) {
            xReal -= 128;

            if (direction)
                scaleFactorX = scaleFactor * (width - x);
            else
                scaleFactorX = scaleFactor * x;

            pixelCntr = 0;
            scaleFactorPixelIndex = (width * 16384L) / (height * 128L - (scaleFactorX * 2));
            for (y = 0; y < height; y++) {
                if ((y * 128) < scaleFactorX)
                    oledData(0);
                else if ((y * 128) < (height * 128 - scaleFactorX))
                    oledData(pixel_buff[(unsigned char) ((pixelCntr++ * scaleFactorPixelIndex) >> 7)]);

                else
                    oledData(0);
            }


        }

    }
    OLED_CE = 1;

    f_close(&imageFile);
    oledCommand(0xA0);
    oledCommand(0x62);

}

Kod: Markera allt

      
     for (i = 0; i < 25; i++) {
            oledLine(47, 0, 47, 48, 0);
            putImageTransform(0, 0, (i * 2), (i * 2), "icons/pbook.bmp", 1);
            putImageTransform((i * 2), 0, 48 - (i * 2), 48 - (i * 2), "icons/pbook.bmp", 0);
        }