Struct QAccelPlot::CurveChunk

ClassList > QAccelPlot > CurveChunk

Axis-aligned bounding box (AABB) for a contiguous block of curve points, used for hit-test culling. More...

• #include <CurveRendererParams.hpp>

Public Attributes

Type	Name
int	count Number of points owned by this chunk.
qreal	maxX Maximum X of the data-space AABB (extended to bridging points).
qreal	maxY Maximum Y of the data-space AABB (extended to bridging points).
qreal	minX Minimum X of the data-space AABB (extended to bridging points).
qreal	minY Minimum Y of the data-space AABB (extended to bridging points).
int	start Index of the first point in the data buffer.

Detailed Description

The AABB is stored in data-space so it never needs rebuilding during pan/zoom — only when the underlying data changes. It intentionally extends one point beyond each chunk boundary so that line segments bridging adjacent chunks are always covered.

Public Attributes Documentation

variable count

Number of points owned by this chunk.

int QAccelPlot::CurveChunk::count;

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variable maxX

Maximum X of the data-space AABB (extended to bridging points).

qreal QAccelPlot::CurveChunk::maxX;

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variable maxY

Maximum Y of the data-space AABB (extended to bridging points).

qreal QAccelPlot::CurveChunk::maxY;

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variable minX

Minimum X of the data-space AABB (extended to bridging points).

qreal QAccelPlot::CurveChunk::minX;

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variable minY

Minimum Y of the data-space AABB (extended to bridging points).

qreal QAccelPlot::CurveChunk::minY;

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variable start

Index of the first point in the data buffer.

int QAccelPlot::CurveChunk::start;

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The documentation for this class was generated from the following file QAccelPlot/src/QAccelPlot/renderers/CurveRendererParams.hpp