44 lines
890 B
C
44 lines
890 B
C
int XYsafe(int x, int y) {
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if ( x >= LED_WIDTH) return 0;
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if ( y >= LED_HEIGHT) return 0;
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if ( x < 0) return 0;
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if ( y < 0) return 0;
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// Invert y
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y = LED_HEIGHT - 1 - y;
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if (y & 1) x = LED_WIDTH - 1 - x;
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// Invert x
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//x = LED_WIDTH - 1 - x;
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return y*LED_WIDTH+x;
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}
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void clear() {
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for ( byte y = 0; y < LED_HEIGHT; y++) {
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for ( byte x = 0; x < LED_WIDTH; x++) {
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leds[ XYsafe(x, y)] = CHSV((16*y)+(47*x), 255, 42);
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}
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}
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}
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inline double sines(double x, double y) {
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return ((cos(x) * sin(y)) * 0.5) + 0.5;
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}
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inline double basefield(double x, double y) {
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return (cos(x) * sin(y) * cos(sqrt((x*x) + (y*y))));
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}
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inline double addmod(double x, double mod, double delta) {
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x = x + delta;
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while( x >= mod ) x -= mod;
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while( x < 0.0 ) x += mod;
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return x;
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}
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inline double addmodpi(double x, double delta) {
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return addmod(x, 2*PI, delta);
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}
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