initial commit

support/src/RoundedRectangleShape.cpp

@@ -0,0 +1,107 @@
+////////////////////////////////////////////////////////////
+//
+// This software is provided 'as-is', without any express or implied warranty.
+// In no event will the authors be held liable for any damages arising from the
+// use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented;
+// you must not claim that you wrote the original software.
+// If you use this software in a product, an acknowledgment
+// in the product documentation would be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such,
+// and must not be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source distribution.
+//
+////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////
+// Headers
+////////////////////////////////////////////////////////////
+#include "RoundedRectangleShape.hpp"
+
+#if defined(PROJECT_ENABLE_SFML)
+
+#include <cmath>
+
+namespace sf {
+////////////////////////////////////////////////////////////
+RoundedRectangleShape::RoundedRectangleShape(const Vector2f &size, float radius,
+                                             unsigned int cornerPointCount) {
+  mySize = size;
+  myRadius = radius;
+  myCornerPointCount = cornerPointCount;
+  update();
+}
+
+////////////////////////////////////////////////////////////
+void RoundedRectangleShape::setSize(const Vector2f &size) {
+  mySize = size;
+  update();
+}
+
+////////////////////////////////////////////////////////////
+const Vector2f &RoundedRectangleShape::getSize() const { return mySize; }
+
+////////////////////////////////////////////////////////////
+void RoundedRectangleShape::setCornersRadius(float radius) {
+  myRadius = radius;
+  update();
+}
+
+////////////////////////////////////////////////////////////
+float RoundedRectangleShape::getCornersRadius() const { return myRadius; }
+
+////////////////////////////////////////////////////////////
+void RoundedRectangleShape::setCornerPointCount(unsigned int count) {
+  myCornerPointCount = count;
+  update();
+}
+
+////////////////////////////////////////////////////////////
+std::size_t RoundedRectangleShape::getPointCount() const {
+  return myCornerPointCount * 4;
+}
+
+////////////////////////////////////////////////////////////
+sf::Vector2f RoundedRectangleShape::getPoint(std::size_t index) const {
+  if (index >= myCornerPointCount * 4)
+    return sf::Vector2f(0, 0);
+
+  float deltaAngle = 90.0f / (myCornerPointCount - 1);
+  sf::Vector2f center;
+  unsigned int centerIndex = index / myCornerPointCount;
+  static const float pi = 3.141592654f;
+
+  switch (centerIndex) {
+  case 0:
+    center.x = mySize.x - myRadius;
+    center.y = myRadius;
+    break;
+  case 1:
+    center.x = myRadius;
+    center.y = myRadius;
+    break;
+  case 2:
+    center.x = myRadius;
+    center.y = mySize.y - myRadius;
+    break;
+  case 3:
+    center.x = mySize.x - myRadius;
+    center.y = mySize.y - myRadius;
+    break;
+  }
+
+  return sf::Vector2f(
+      myRadius * cos(deltaAngle * (index - centerIndex) * pi / 180) + center.x,
+      -myRadius * sin(deltaAngle * (index - centerIndex) * pi / 180) +
+          center.y);
+}
+} // namespace sf
+
+#endif // defined(PROJECT_ENABLE_SFML)