diff options
Diffstat (limited to 'src/SFML/Graphics/CircleShape.cpp')
-rw-r--r-- | src/SFML/Graphics/CircleShape.cpp | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/SFML/Graphics/CircleShape.cpp b/src/SFML/Graphics/CircleShape.cpp new file mode 100644 index 0000000..23e9e77 --- /dev/null +++ b/src/SFML/Graphics/CircleShape.cpp @@ -0,0 +1,84 @@ +//////////////////////////////////////////////////////////// +// +// SFML - Simple and Fast Multimedia Library +// Copyright (C) 2007-2013 Laurent Gomila (laurent.gom@gmail.com) +// +// 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 <SFML/Graphics/CircleShape.hpp> +#include <cmath> + + +namespace sf +{ +//////////////////////////////////////////////////////////// +CircleShape::CircleShape(float radius, unsigned int pointCount) : +m_radius (radius), +m_pointCount(pointCount) +{ + update(); +} + + +//////////////////////////////////////////////////////////// +void CircleShape::setRadius(float radius) +{ + m_radius = radius; + update(); +} + + +//////////////////////////////////////////////////////////// +float CircleShape::getRadius() const +{ + return m_radius; +} + + +//////////////////////////////////////////////////////////// +void CircleShape::setPointCount(unsigned int count) +{ + m_pointCount = count; + update(); +} + +//////////////////////////////////////////////////////////// +unsigned int CircleShape::getPointCount() const +{ + return m_pointCount; +} + + +//////////////////////////////////////////////////////////// +Vector2f CircleShape::getPoint(unsigned int index) const +{ + static const float pi = 3.141592654f; + + float angle = index * 2 * pi / m_pointCount - pi / 2; + float x = std::cos(angle) * m_radius; + float y = std::sin(angle) * m_radius; + + return Vector2f(m_radius + x, m_radius + y); +} + +} // namespace sf |