Callers at the scuba center by Anthony Appleyard
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Description
What the scuba center's staff did not want to see arriving, after the new diving control law was passed. Add the men's hobnail-booted running and the 30-foot dredgersub's steel land-legs treading on the drive, and its motor running; it can stow away and destroy a lot of unauthorized scuba gear.
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To get the shadow on the background image I did this:
* Set up a plane where the ground would be; keep track of where the ground is sloping. This could be a plane that you make, not necessarily Poser's default ground plane.
* Render a BMP image W with the ground plane white (no specularity and no ambience)
* Render a BMP image B with the ground plane black (no specularity and no ambience)
** These 2 renders must have identical rendering conditions, except the color of the ground plane.
* Render a BMP image R without the ground plane.
* Make a new image F, which for each color (red, green, blue) of each pixel is:
If B value is same or greater than W value, then use the R value;
else use (W value - B value) * (R value / 255.0) + B value
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