Add fastBoundingRect() method to Sprite

Author: adazem009

include/scratchcpp/sprite.h

@@ -70,6 +70,7 @@ class LIBSCRATCHCPP_EXPORT Sprite
         void setLayerOrder(int newLayerOrder) override;
 
         Rect boundingRect() const;
+        Rect fastBoundingRect() const;
         void keepInFence(double newX, double newY, double *fencedX, double *fencedY) const;
 
         void setGraphicsEffectValue(IGraphicsEffect *effect, double value) override;

src/scratch/sprite.cpp

@@ -350,6 +350,18 @@ Rect Sprite::boundingRect() const
     return impl->iface->boundingRect();
 }
 
+/*!
+ * Returns the less accurate bounding rectangle of the sprite
+ * which is calculated by transforming the costume rectangle.
+ */
+Rect Sprite::fastBoundingRect() const
+{
+    if (!impl->iface)
+        return Rect(impl->x, impl->y, impl->x, impl->y);
+
+    return impl->iface->fastBoundingRect();
+}
+
 /*!
  * Keeps the desired position within the stage.
  * \param[in] New desired X position.

test/scratch_classes/sprite_test.cpp

@@ -602,6 +602,18 @@ TEST(SpriteTest, DefaultBoundingRect)
     ASSERT_EQ(rect.bottom(), -45.01);
 }
 
+TEST(SpriteTest, DefaultFastBoundingRect)
+{
+    Sprite sprite;
+    sprite.setX(65.5);
+    sprite.setY(-45.01);
+    Rect rect = sprite.fastBoundingRect();
+    ASSERT_EQ(rect.left(), 65.5);
+    ASSERT_EQ(rect.top(), -45.01);
+    ASSERT_EQ(rect.right(), 65.5);
+    ASSERT_EQ(rect.bottom(), -45.01);
+}
+
 TEST(SpriteTest, GraphicsEffects)
 {
     Sprite sprite;

test/target_interfaces/ispritehandler_test.cpp

@@ -199,3 +199,13 @@ TEST_F(ISpriteHandlerTest, BoundingRect)
     ASSERT_EQ(rect.right(), 20.5);
     ASSERT_EQ(rect.bottom(), -0.48);
 }
+
+TEST_F(ISpriteHandlerTest, FastBoundingRect)
+{
+    EXPECT_CALL(m_handler, fastBoundingRect()).WillOnce(Return(Rect(-44.6, 89.1, 20.5, -0.48)));
+    Rect rect = m_sprite.fastBoundingRect();
+    ASSERT_EQ(rect.left(), -44.6);
+    ASSERT_EQ(rect.top(), 89.1);
+    ASSERT_EQ(rect.right(), 20.5);
+    ASSERT_EQ(rect.bottom(), -0.48);
+}