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Hypercard

    In 1997 I used Hypercard to program a microprocessor to rotate objects for QuickTime VR-objects, increments of 32 steps for a full rotation, controlled from the desktop. It had an opto-mechanical indexing plate, that could be switched between 16 and 32 steps. I made a computer interface to trigger the camera and count the exposures.
    In my second iteration I added a front projection screen behind the chainsaw and a 50/50 mirror with a separate flash head to create a mask for each of the 32x7x4 (=896) images. 32x7x4, the four at the end was because the Leaf digital back for the Hasselblad (1995) took separate photos for each colour, RGB and a black and white for the mask (actually green filtered for contrast with the red in the chainsaw). I also made a sort of shackles to get 7 vertical steps of 10° – then I hit the floor or ceiling for objects big as a standard chainsaw, which was my original job. Shorter shackles would have allowed more angles but necessitated a wider lens and the corresponding exaggerated perspective, so no.

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