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Gold Medal Software 3
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Gold Medal Software - Volume 3 (Gold Medal) (1994).iso
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INITLIGH.C
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1992-04-03
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/* Initializes lighting. */
#include "polygon.h"
/* Selects 0-10-0% intensity for R, G, and B for initial ambient lighting */
static ModelIntensity InitialAmbient = {
DOUBLE_TO_FIXED(0.0), DOUBLE_TO_FIXED(0.10), DOUBLE_TO_FIXED(0.0)
};
/* Initial spot 0 comes in from the upper right */
static Point3 InitialSpot0Direction = {
DOUBLE_TO_FIXED(-1), DOUBLE_TO_FIXED(-1), DOUBLE_TO_FIXED(-1)
};
/* Initial spot 0 is 0% red, 75% green, 0% blue */
static ModelIntensity InitialSpot0Intensity = {
DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(0.75), DOUBLE_TO_FIXED(0)
};
/* Spot 1 comes in from the lower left */
static Point3 Spot1Direction = {
DOUBLE_TO_FIXED(1), DOUBLE_TO_FIXED(1), DOUBLE_TO_FIXED(-1)
};
/* Spot 1 is 0% red, 40% green, 0% blue */
static ModelIntensity Spot1Intensity = {
DOUBLE_TO_FIXED(0.0), DOUBLE_TO_FIXED(0.4), DOUBLE_TO_FIXED(0.0)
};
/* Spot 2 comes in from the left */
static Point3 Spot2Direction = {
DOUBLE_TO_FIXED(1), DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(0)
};
/* Spot 2 is 0% red, 0% green, 60% blue */
static ModelIntensity Spot2Intensity = {
DOUBLE_TO_FIXED(0.0), DOUBLE_TO_FIXED(0.0), DOUBLE_TO_FIXED(0.6)
};
void InitializeLighting()
{
SetAmbientIntensity(&InitialAmbient);
TurnAmbientOn();
/* Prepare first spotlight for when we'll need it */
SetSpotDirection(0, &InitialSpot0Direction);
SetSpotIntensity(0, &InitialSpot0Intensity);
/* Prepare second spotlight for when we'll need it */
SetSpotDirection(1, &Spot1Direction);
SetSpotIntensity(1, &Spot1Intensity);
/* Prepare third spotlight for when we'll need it */
SetSpotDirection(2, &Spot2Direction);
SetSpotIntensity(2, &Spot2Intensity);
}