60 lines
2.3 KiB
Java
60 lines
2.3 KiB
Java
package androidx.appcompat.app;
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/* loaded from: classes.dex */
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class TwilightCalculator {
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private static final float ALTIDUTE_CORRECTION_CIVIL_TWILIGHT = -0.10471976f;
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private static final float C1 = 0.0334196f;
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private static final float C2 = 3.49066E-4f;
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private static final float C3 = 5.236E-6f;
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public static final int DAY = 0;
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private static final float DEGREES_TO_RADIANS = 0.017453292f;
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private static final float J0 = 9.0E-4f;
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public static final int NIGHT = 1;
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private static final float OBLIQUITY = 0.4092797f;
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private static final long UTC_2000 = 946728000000L;
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private static TwilightCalculator sInstance;
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public int state;
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public long sunrise;
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public long sunset;
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TwilightCalculator() {
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}
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static TwilightCalculator getInstance() {
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if (sInstance == null) {
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sInstance = new TwilightCalculator();
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}
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return sInstance;
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}
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public void calculateTwilight(long j, double d, double d2) {
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double d3 = (0.01720197f * ((j - UTC_2000) / 8.64E7f)) + 6.24006f;
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double sin = (Math.sin(d3) * 0.03341960161924362d) + d3 + (Math.sin(2.0f * r4) * 3.4906598739326E-4d) + (Math.sin(r4 * 3.0f) * 5.236000106378924E-6d) + 1.796593063d + 3.141592653589793d;
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double round = Math.round((r3 - J0) - r7) + J0 + ((-d2) / 360.0d) + (Math.sin(d3) * 0.0053d) + (Math.sin(2.0d * sin) * (-0.0069d));
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double asin = Math.asin(Math.sin(sin) * Math.sin(0.4092797040939331d));
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double d4 = 0.01745329238474369d * d;
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double sin2 = (Math.sin(-0.10471975803375244d) - (Math.sin(d4) * Math.sin(asin))) / (Math.cos(d4) * Math.cos(asin));
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if (sin2 >= 1.0d) {
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this.state = 1;
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this.sunset = -1L;
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this.sunrise = -1L;
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} else {
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if (sin2 <= -1.0d) {
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this.state = 0;
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this.sunset = -1L;
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this.sunrise = -1L;
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return;
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}
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double acos = (float) (Math.acos(sin2) / 6.283185307179586d);
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this.sunset = Math.round((round + acos) * 8.64E7d) + UTC_2000;
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long round2 = Math.round((round - acos) * 8.64E7d) + UTC_2000;
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this.sunrise = round2;
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if (round2 >= j || this.sunset <= j) {
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this.state = 1;
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} else {
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this.state = 0;
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}
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}
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}
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}
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