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adam johnson
adam johnson
Last Activity: Apr 1 '12, 06:05 PM
Joined: Dec 30 '11
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  • adam johnson
    replied to rotate an 8byte array
    in C
    the problem seem to be plotting the square. Holes are left by the newX,newY points.And some points are used twice. Anyideas anyone? I do use radian instead of angle now too.

    newX = ((x-pX)*cos(radians ) - (y-pY)*sin(radians )) + pX;
    newY = ((x-pX)*sin(radians ) + (y-pY)*cos(radians )) + pY;
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  • adam johnson
    replied to rotate an 8byte array
    in C
    thankyou. I can already do the easy rotates as i said earlier. I was thinking more along te lines of of a 0-360 degree rotate. Tried a few ways and although i do get a rotation "of sorts" its not good.
    I was thinking along the lines of plotting an 8x8 square at a given angle and then filling the area in with my 8x8 array. I think i must be getting some weird rounding problems ans stuff. Just about given up now. Heres what ive got...
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  • adam johnson
    replied to rotate an 8byte array
    in C
    i would like to rotate this 8x8 character array around its center point. so it look like the character is turning round.
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  • adam johnson
    started a topic rotate an 8byte array
    in C

    rotate an 8byte array

    Hi guys/Gals.
    I want to rotate an 8 byte array, to create a spinning effect, i.e.

    char_buff[0] = 0x81;
    char_buff[1] = 0x42;
    char_buff[2] = 0x24;
    char_buff[3] = 0x18;
    char_buff[4] = 0x18;
    char_buff[5] = 0x24;
    char_buff[6] = 0x42;
    char_buff[7] = 0x81;

    this makes up a "character" , any ideas as how I can rotate it. not just 90 degrees, 180, 270. that bits...
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