Add updateColor() to PenState

Author: adazem009

src/penstate.h

@@ -27,6 +27,16 @@ struct PenState
             this->brightness = hsvColor.valueF() * 100;
             this->transparency = 100 * (1 - hsvColor.alphaF());
         }
+
+        void updateColor()
+        {
+            const int h = std::round(std::fmod(color * 360 / 100, 360.0));
+            const int s = std::round(saturation * 2.55);
+            const int v = std::round(brightness * 2.55);
+            const int a = std::round((100 - transparency) * 2.55);
+
+            penAttributes.color = QColor::fromHsv(h, s, v, a);
+        }
 };
 
 } // namespace scratchcpprender

test/penstate/penstate_test.cpp

@@ -31,3 +31,15 @@ TEST(PenStateTest, SetColor)
     ASSERT_EQ(std::round(state.transparency * 100) / 100, 34.51);
     ASSERT_EQ(state.shade, 50);
 }
+
+TEST(PenStateTest, UpdateColor)
+{
+    PenState state;
+    state.color = 78.64;
+    state.saturation = 45.07;
+    state.brightness = 12.5;
+    state.transparency = 36.09;
+    state.shade = 85;
+    state.updateColor();
+    ASSERT_EQ(state.penAttributes.color, QColor::fromHsv(283, 115, 32, 163));
+}