C++ (Cpp) CBox2D示例

示例#1

void Span::GetBox(CBox2D &box)
{
	box.Insert(m_p);
	box.Insert(m_v.m_p);

	if(this->m_v.m_type)
	{
		// arc, add quadrant points
		Point vs = m_p - m_v.m_c;
		Point ve = m_v.m_p - m_v.m_c;
		int qs = GetQuadrant(vs);
		int qe = GetQuadrant(ve);
		if(m_v.m_type == -1)
		{
			// swap qs and qe
			int t=qs;
			qs = qe;
			qe = t;
		}

		if(qe<qs)qe = qe + 4;

		double rad = m_v.m_p.dist(m_v.m_c);

		for(int i = qs; i<qe; i++)
		{
			box.Insert(m_v.m_c + QuadrantEndPoint(i) * rad);
		}
	}
}

示例#2

文件： Mole.cpp 项目： bullfrognz/MoleMadness

bool
CMole::Intersects(const CBox2D& _krBox) const
{
	CCircle Bounds;
	Bounds.Initialise(m_vPosition, m_fRadius);


	return (_krBox.Intersects(Bounds));
}

示例#3

文件： Area.cpp 项目： gorilux/libarea

static void zigzag(const CArea &input_a)
{
	if(input_a.m_curves.size() == 0)
	{
		CArea::m_processing_done += CArea::m_single_area_processing_length;
		return;
	}
    
    one_over_units = 1 / CArea::m_units;
    
	CArea a(input_a);
    rotate_area(a);
    
    CBox2D b;
	a.GetBox(b);
    
    double x0 = b.MinX() - 1.0;
    double x1 = b.MaxX() + 1.0;

    double height = b.MaxY() - b.MinY();
    int num_steps = int(height / stepover_for_pocket + 1);
    double y = b.MinY();// + 0.1 * one_over_units;
    Point null_point(0, 0);
	rightward_for_zigs = true;

	if(CArea::m_please_abort)return;

	double step_percent_increment = 0.8 * CArea::m_single_area_processing_length / num_steps;

	for(int i = 0; i<num_steps; i++)
	{
		double y0 = y;
		y = y + stepover_for_pocket;
		Point p0(x0, y0);
		Point p1(x0, y);
		Point p2(x1, y);
		Point p3(x1, y0);
		CCurve c;
		c.m_vertices.push_back(CVertex(0, p0, null_point, 0));
		c.m_vertices.push_back(CVertex(0, p1, null_point, 0));
		c.m_vertices.push_back(CVertex(0, p2, null_point, 1));
		c.m_vertices.push_back(CVertex(0, p3, null_point, 0));
		c.m_vertices.push_back(CVertex(0, p0, null_point, 1));
		CArea a2;
		a2.m_curves.push_back(c);
		a2.Intersect(a);
		make_zig(a2, y0, y);
		rightward_for_zigs = !rightward_for_zigs;
		if(CArea::m_please_abort)return;
		CArea::m_processing_done += step_percent_increment;
	}

	reorder_zigs();
	CArea::m_processing_done += 0.2 * CArea::m_single_area_processing_length;
}

示例#4

文件： Wall.cpp 项目： roosen5/media-design-school

bool CWall::Intersects( const CBox2D& Box ) const
{
	return Box.OverlapsLineSegment( m_Line.GetEnd0(), m_Line.GetEnd1() );
}

示例#5

文件： Mole.cpp 项目： roosen5/media-design-school

bool CMole::Intersects( const CBox2D& Box ) const
{
	CCircle Bounds;
	Bounds.Initialise( m_vPosition, fMOLE_RADIUS );
	return Box.Intersects( Bounds );
}

示例#6

文件： Box2D.cpp 项目： diemhuongpie/GameDx

bool CBox2D::Intersect(CBox2D box1, CBox2D box2)
{
	return !(
			box1.getX()									> (box2.getX() + box2.getWidth())	||
			(box1.getWidth()	+ box1.getX()			< box2.getX())						||
			(box1.getY()		- box1.getHeight()		> box2.getY())						||
			(box1.getY()								< box2.getY() - box2.getHeight())
			);
}