/usr/include/OpenLayer/Line.hpp is in libopenlayer-dev 2.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 | #ifndef OL_LINE_HPP
#define OL_LINE_HPP
#include "Shape.hpp"
#include "Vec2D.hpp"
#include "Settings.hpp"
#include "Declspec.hpp"
namespace ol {
class OL_LIB_DECLSPEC Line : public Shape {
public:
Line()
: Shape( 1.0 ) {}
Line( float x1, float y1, float x2, float y2, float lineWidth = 1.0 )
: Shape( lineWidth ), start( x1, y1 ), end( x2, y2 ) {}
Line( Vec2D start, Vec2D end, float lineWidth = 1.0 )
: Shape( lineWidth ), start( start ), end( end ) {}
virtual ~Line() {}
inline void Draw( const Rgba &color ) const {
#ifdef OL_NO_STATE_CHANGE
GLboolean texturesEnabled;
glGetBooleanv( GL_TEXTURE_2D, &texturesEnabled );
#endif
glDisable( GL_TEXTURE_2D );
color.Select();
ExecDraw();
#ifdef OL_NO_STATE_CHANGE
if( texturesEnabled )
glEnable( GL_TEXTURE_2D );
#endif
}
void DrawOutline( const Rgba &color ) const {
#ifdef OL_NO_STATE_CHANGE
GLboolean texturesEnabled;
glGetBooleanv( GL_TEXTURE_2D, &texturesEnabled );
#endif
glDisable( GL_TEXTURE_2D );
color.Select();
ExecDrawOutline();
#ifdef OL_NO_STATE_CHANGE
if( texturesEnabled )
glEnable( GL_TEXTURE_2D );
#endif
}
// Draws the line with the color smoothly changing from start of the line to the end //
virtual void Draw( const Rgba &startColor, const Rgba &endColor ) const;
// Moves the line by the specified amount //
virtual void MoveBy( const Vec2D &amount ) {
origin += amount;
}
virtual void MoveTo( const Vec2D &position ) {
origin = position;
}
inline Placement GetPlacement() {
return Placement( origin );
}
virtual void TransformBy( const Placement &placement ) {
origin += placement.GetPosition();
Matrix2D matrix = placement.Get2DMatrix();
start = matrix.Transform( start );
end = matrix.Transform( end );
}
virtual void RotateBy( float angle ) {
TransformBy( Placement( Vec2D( 0.0f, 0.0f ), angle ));
}
// Returns the intersection point of two lines //
Vec2D GetIntersectionPoint( const Line &other ) const;
// Tests if the two line segments collide //
inline bool Collides( const Line &other ) const {
return Collides( start, end, other.origin, other.start, other.end );
}
Vec2D GetNormal() const {
Vec2D s = end - start;
Vec2D normal( -s.y, s.x );
return normal.Normalized();
}
float GetShortestDistanceTo( const Vec2D &point );
inline Placement GetPlacement() const {
return Placement( origin );
}
inline Collision GetCollision( const Line &other ) const {
if( Collides( other )) {
return Collision( *this, other );
}
else {
return Collision( false );
}
}
bool Collides( const Line &other, const Placement &thisPlacement,
const Placement &otherPlacement ) const;
inline Collision GetCollision( const Line &other, const Placement &thisPlacement,
const Placement &otherPlacement ) const {
if( Collides( other, thisPlacement, otherPlacement )) {
return Collision( *this, other );
}
else {
return Collision( false );
}
}
virtual std::string ToString() const;
Vec2D start, end;
Vec2D origin;
protected:
bool Collides( const Vec2D &thisStart, const Vec2D &thisEnd, const Vec2D &otherOrigin,
const Vec2D &otherStart, const Vec2D &otherEnd ) const;
// Draws the line with the specified color //
void ExecDraw() const;
// Draws the line with the specified color //
void ExecDrawOutline() const {
ExecDraw();
}
};
}
#endif // OL_LINE_HPP
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