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NCBI C++ ToolKit: include/gui/opengl/spatialhash2d.hpp Source File

resolution,

tilex =

,

tiley =

);

: m_PrevVisMin(0.0f, 0.0f)

, m_PrevVisMax(0.0f, 0.0f)

, m_Scale(1.0f, 1.0f)

, m_ResolutionX(1.0f)

, m_ResolutionY(1.0f)

, m_ResolutionScaler(1.0f)

idx = GetTableIdx(item);

(idx < (

)m_GridTable.size() && idx >= 0)

m_GridTable[idx];

idx = GetTableIdx(item);

(idx < (

)m_GridTable.size() && idx >= 0)

resolution,

tilex,

tiley)

wh = ((max_pos.

()-min_pos.

()) + (max_pos.

()-min_pos.

()))*0.5f;

resxy = m_ResolutionScaler * ceilf(wh/resolution);

m_ResolutionX = resxy;

m_ResolutionY = resxy;

min_idx(

(floorf(min_pos[0] / m_ResolutionX)),

(floorf(min_pos[1] / m_ResolutionY)));

max_idx(

(floorf(max_pos[0] / m_ResolutionX)),

(floorf(max_pos[1] / m_ResolutionY)));

CGlModel2D Base class for a model set up for rendering purposes.

class CSpatialHash2D Class for simple 2D spatial organization that allows for some collision checking...

TVeci GetMaxVisIndex() const

const TVeci & GetMin()

Get min/max indices for current (whole) grid.

TVeci GetMinVisIndex() const

Get min/max visible indices for grid (as per UpdateVisibility)

CVect2< int > m_VisMinIdx

Range of visible indices from previous call to UpdateVisibility.

int m_Width

Width and heigt of table (m_MaxIdx-m_MinIdx)

CVect2< int > TVeci

Storage index in table.

TElemType & Get(const TVeci &item)

float m_ResolutionX

Divisor for dividing model-space resolution into table indices.

CVect2< float > m_PrevVisMax

CVect2< float > TVecf

floating point type for actual (real) positions of data

CVect2< float > m_PrevVisMin

Visible rectangle area from previous call to UpdateVisibility.

TElemType GetSafe(const TVeci &item) const

Return an empty TElemType if index is out of range.

const TElemType & Get(const TVeci &item) const

const TTableType & GetTable() const

virtual ~CSpatialHash2D()

vector< TElemType > TTableType

Storage table type.

CVect2< int > m_VisMaxIdx

TVecf m_MinPos

Geometric region subdivided by this data structure.

T TElemType

Element type stored in table (e.g. indices or pointers to user data)

bool InBounds(const TVeci &item) const

Return true if the index falls within the current table.

int GetWidth() const

Get width/height of grid.

TTableType m_GridTable

Hashtable that stores the data elements.

const CVect2< float > & GetScale() const

TVeci m_MinIdx

Min/Max indicies in the table.

TVecf & GetMinPos()

Get min/max model coords spanned by the grid.

void ResizeGrid(const CGlPane &pane, float resolution, bool tilex=true, bool tiley=true)

int GetTableIdx(const TVeci &item) const

CVect2< float > m_Scale

Current scaling factor of model for viewing in x and y.

virtual void UpdateVisibility(const TModelRect &)

TModelRect & GetModelLimitsRect(void)

TModelRect & GetVisibleRect(void)

#define END_NCBI_SCOPE

End previously defined NCBI scope.

#define BEGIN_NCBI_SCOPE

Define ncbi namespace.

Defines to provide correct exporting from DLLs in Windows.

Portable reference counted smart and weak pointers using CWeakRef, CRef, CObject and CObjectEx.

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