Merge pull request #4 from FOSSEE/develop

merging dev into master

1 files changed, 189 insertions, 0 deletions

diff --git a/include/geometry/shape_convex.h b/include/geometry/shape_convex.h
new file mode 100644
index 0000000..308a1b3
--- /dev/null
+++ b/include/geometry/shape_convex.h
@@ -0,0 +1,189 @@
+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2015 Kicad Developers, see change_log.txt for contributors.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you may find one here:
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * or you may search the http://www.gnu.org website for the version 2 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+#ifndef __SHAPE_CONVEX_H
+#define __SHAPE_CONVEX_H
+
+#include <vector>
+
+#include <geometry/shape.h>
+#include <geometry/seg.h>
+#include <geometry/shape_line_chain.h>
+
+/**
+ * Class SHAPE_CONVEX
+ *
+ * Represents a convex polygon consisting of a zero-thickness closed chain of
+ * connected line segments.
+ *
+ * Internally the vertices are held in a SHAPE_LINE_CHAIN, please note that
+ * there is a "virtual" line segment between the last and first vertex.
+ */
+class SHAPE_CONVEX : public SHAPE
+{
+public:
+    /**
+     * Constructor
+     * Creates an empty polygon
+     */
+    SHAPE_CONVEX() :
+        SHAPE( SH_CONVEX )
+    {
+        m_points.SetClosed( true );
+    }
+
+    SHAPE_CONVEX( const SHAPE_CONVEX& aOther ) :
+       SHAPE( SH_CONVEX ), m_points( aOther.m_points )
+    {}
+
+    SHAPE* Clone() const
+    {
+        return new SHAPE_CONVEX( *this );
+    }
+
+    /**
+     * Function Clear()
+     * Removes all points from the polygon.
+     */
+    void Clear()
+    {
+        m_points.Clear();
+    }
+
+    /// @copydoc SHAPE::BBox()
+    const BOX2I BBox( int aClearance = 0 ) const
+    {
+        return m_points.BBox( aClearance );
+    }
+
+    /**
+     * Function PointCount()
+     *
+     * Returns the number of points (vertices) in this polygon
+     * @return number of points
+     */
+    int PointCount() const
+    {
+        return m_points.PointCount();
+    }
+
+    /**
+     * Function Point()
+     *
+     * Returns a reference to a given point in the polygon. Negative indices
+     * count from the end of the point list, e.g. -1 means "last point", -2
+     * means "second to last point" and so on.
+     * @param aIndex index of the point
+     * @return reference to the point
+     */
+    VECTOR2I& Point( int aIndex )
+    {
+        return m_points.Point( aIndex );
+    }
+
+    /**
+     * Function CPoint()
+     *
+     * Returns a const reference to a given point in the polygon. Negative
+     * indices count from the end of the point list, e.g. -1 means "last
+     * point", -2 means "second to last point" and so on.
+     * @param aIndex index of the point
+     * @return const reference to the point
+     */
+    const VECTOR2I& CPoint( int aIndex ) const
+    {
+        return m_points.CPoint( aIndex );
+    }
+
+    /**
+     * Function CDPoint()
+     *
+     * Returns a given point as a vector with elements of type double.
+     *
+     * @param aIndex index of the point
+     * @return the point with elements of type double
+     */
+    const VECTOR2D CDPoint( int aIndex ) const
+    {
+        const VECTOR2I& v = CPoint( aIndex );
+        return VECTOR2D( v.x, v.y );
+    }
+
+    /**
+     * Function Vertices()
+     *
+     * Returns the list of vertices defining this convex polygon.
+     *
+     * @return the list of vertices defining this convex polygon
+     */
+    const SHAPE_LINE_CHAIN& Vertices() const
+    {
+        return m_points;
+    }
+
+    /**
+     * Function Append()
+     *
+     * Appends a new point at the end of the polygon.
+     * @param aX is X coordinate of the new point
+     * @param aY is Y coordinate of the new point
+     */
+    void Append( int aX, int aY )
+    {
+        VECTOR2I v( aX, aY );
+        Append( v );
+    }
+
+    /**
+     * Function Append()
+     *
+     * Appends a new point at the end of the polygon.
+     * @param aP the new point
+     */
+    void Append( const VECTOR2I& aP )
+    {
+        m_points.Append( aP );
+    }
+
+    /// @copydoc SHAPE::Collide()
+    bool Collide( const SEG& aSeg, int aClearance = 0 ) const
+    {
+        return m_points.Collide( aSeg, aClearance );
+    }
+
+    void Move( const VECTOR2I& aVector )
+    {
+        m_points.Move( aVector );
+    }
+
+    bool IsSolid() const
+    {
+        return true;
+    }
+
+private:
+    // vertices
+    SHAPE_LINE_CHAIN m_points;
+};
+
+#endif // __SHAPE_CONVEX_H