1 /*
2  * Copyright (C) 2019 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 #pragma once
18 
19 #include "Lighting.h"
20 #include "Properties.h"
21 
22 namespace android {
23 namespace uirenderer {
24 
25 class LightingInfo {
26 public:
27 
getLightRadius()28     static float getLightRadius() {
29         if (CC_UNLIKELY(Properties::overrideLightRadius > 0)) {
30             return Properties::overrideLightRadius;
31         }
32         return mLightRadius;
33     }
34 
getAmbientShadowAlpha()35     static uint8_t getAmbientShadowAlpha() {
36         if (CC_UNLIKELY(Properties::overrideAmbientShadowStrength >= 0)) {
37             return Properties::overrideAmbientShadowStrength;
38         }
39         return mAmbientShadowAlpha;
40     }
41 
getSpotShadowAlpha()42     static uint8_t getSpotShadowAlpha() {
43         if (CC_UNLIKELY(Properties::overrideSpotShadowStrength >= 0)) {
44             return Properties::overrideSpotShadowStrength;
45         }
46         return mSpotShadowAlpha;
47     }
48 
getLightCenter()49     static Vector3 getLightCenter() {
50         if (CC_UNLIKELY(Properties::overrideLightPosY > 0 || Properties::overrideLightPosZ > 0)) {
51             Vector3 adjustedLightCenter = mLightCenter;
52             if (CC_UNLIKELY(Properties::overrideLightPosY > 0)) {
53                 // negated since this shifts up
54                 adjustedLightCenter.y = -Properties::overrideLightPosY;
55             }
56             if (CC_UNLIKELY(Properties::overrideLightPosZ > 0)) {
57                 adjustedLightCenter.z = Properties::overrideLightPosZ;
58             }
59             return adjustedLightCenter;
60         }
61         return mLightCenter;
62     }
63 
getLightCenterRaw()64     static Vector3 getLightCenterRaw() {
65         return mLightCenter;
66     }
67 
setLightCenterRaw(const Vector3 & lightCenter)68     static void setLightCenterRaw(const Vector3& lightCenter) {
69         mLightCenter = lightCenter;
70     }
71 
updateLighting(const LightGeometry & lightGeometry,const LightInfo & lightInfo)72     static void updateLighting(const LightGeometry& lightGeometry, const LightInfo& lightInfo) {
73         mLightRadius = lightGeometry.radius;
74         mAmbientShadowAlpha = lightInfo.ambientShadowAlpha;
75         mSpotShadowAlpha = lightInfo.spotShadowAlpha;
76         mLightCenter = lightGeometry.center;
77     }
78 private:
79     static float mLightRadius;
80     static uint8_t mAmbientShadowAlpha;
81     static uint8_t mSpotShadowAlpha;
82     static Vector3 mLightCenter;
83 };
84 
85 } /* namespace uirenderer */
86 } /* namespace android */
87