1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.android.wallpaper.weathereffects.graphics.sun 18 19 import android.graphics.Bitmap 20 import android.graphics.BitmapShader 21 import android.graphics.Canvas 22 import android.graphics.Paint 23 import android.graphics.RuntimeShader 24 import android.graphics.Shader 25 import android.util.SizeF 26 import com.google.android.wallpaper.weathereffects.graphics.WeatherEffect 27 import com.google.android.wallpaper.weathereffects.graphics.WeatherEffectBase 28 import com.google.android.wallpaper.weathereffects.graphics.utils.TimeUtils 29 30 /** Defines and generates the sunny weather animation. */ 31 class SunEffect( 32 /** The config of the sunny effect. */ 33 private val sunConfig: SunEffectConfig, 34 foreground: Bitmap, 35 background: Bitmap, 36 intensity: Float = WeatherEffect.DEFAULT_INTENSITY, 37 /** The initial size of the surface where the effect will be shown. */ 38 surfaceSize: SizeF, 39 ) : WeatherEffectBase(foreground = foreground, background = background, surfaceSize = surfaceSize) { 40 <lambda>null41 private val sunnyPaint = Paint().also { it.shader = sunConfig.colorGradingShader } 42 43 init { 44 updateTextureUniforms() 45 adjustCropping(surfaceSize) 46 prepareColorGrading() 47 setIntensity(intensity) 48 } 49 50 override val shader: RuntimeShader 51 get() = sunConfig.shader 52 53 override val colorGradingShader: RuntimeShader 54 get() = sunConfig.colorGradingShader 55 56 override val lut: Bitmap? 57 get() = sunConfig.lut 58 59 override val colorGradingIntensity: Float 60 get() = sunConfig.colorGradingIntensity 61 updatenull62 override fun update(deltaMillis: Long, frameTimeNanos: Long) { 63 elapsedTime += TimeUtils.millisToSeconds(deltaMillis) 64 sunConfig.shader.setFloatUniform("time", elapsedTime) 65 sunConfig.colorGradingShader.setInputShader("texture", sunConfig.shader) 66 } 67 drawnull68 override fun draw(canvas: Canvas) { 69 canvas.drawPaint(sunnyPaint) 70 } 71 prepareColorGradingnull72 private fun prepareColorGrading() { 73 sunConfig.colorGradingShader.setInputShader("texture", sunConfig.shader) 74 sunConfig.lut?.let { 75 sunConfig.colorGradingShader.setInputShader( 76 "lut", 77 BitmapShader(it, Shader.TileMode.MIRROR, Shader.TileMode.MIRROR), 78 ) 79 } 80 sunConfig.colorGradingShader.setFloatUniform("intensity", sunConfig.colorGradingIntensity) 81 } 82 } 83