Method getSunBrightness

src/main/java/net/minecraft/world/World.java:1413–1422

Returns the sun brightness - checks time of day, rain and thunder

(float p_72971_1_)

     * Returns the sun brightness - checks time of day, rain and thunder
     */
    public float getSunBrightness(float p_72971_1_)
    {
        float f = this.getCelestialAngle(p_72971_1_);
        float f1 = 1.0F - (MathHelper.cos(f * (float)Math.PI * 2.0F) * 2.0F + 0.2F);
        f1 = MathHelper.clamp_float(f1, 0.0F, 1.0F);
        f1 = 1.0F - f1;
        f1 = (float)((double)f1 * (1.0D - (double)(this.getRainStrength(p_72971_1_) * 5.0F) / 16.0D));
        f1 = (float)((double)f1 * (1.0D - (double)(this.getThunderStrength(p_72971_1_) * 5.0F) / 16.0D));
        return f1 * 0.8F + 0.2F;
    }

    /**
     * Calculates the color for the skybox