Making a sample for shadow maps for more intensive development

include/core/SkLights.h

 
 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkLights_DEFINED
 #define SkLights_DEFINED
@@ skipping 36 matching lines @@
             return fDirection; 
         }
 
         void setShadowMap(sk_sp<SkImage> shadowMap) {
             fShadowMap = std::move(shadowMap);
         }
 
         sk_sp<SkImage> getShadowMap() const {
             return fShadowMap;
         }
 

[robertphillips, 2016/08/02 16:05:06]

The entire idea of having the builder and then built object is to have the built
object be immutable after it is constructed!

[vjiaoblack, 2016/08/03 14:04:20]

Done.

+        void setDir(SkVector3 newDir) {
+            fDirection = newDir;
+            if (!fDirection.normalize()) {
+                fDirection.set(0.0f, 0.0f, 1.0f);
+            }
+        }
+
         Light& operator= (const Light& b) {
             if (this == &b)
                 return *this;
 
             this->fColor = b.fColor;
             this->fType = b.fType;
             this->fDirection = b.fDirection;
 
             if (b.fShadowMap) {
                 this->fShadowMap = b.fShadowMap;
@@ skipping 40 matching lines @@
         return fLights[index];
     }
 
 private:
     SkLights() {}
 
     SkTDArray<Light> fLights;
 };
 
 #endif