Class QAccelPlot::BandMaterial¶

ClassList > QAccelPlot > BandMaterial

QSGMaterial that fills a band between the low and high values of (x, low, high) data points.More...

#include <BandMaterial.hpp>

Inherits the following classes: QAccelPlot::DataTextureMaterial

Inheritance diagram¶

flowchart TB
  classQAccelPlot_1_1BandMaterial["QAccelPlot::BandMaterial"]

  classQAccelPlot_1_1DataTextureMaterial["QAccelPlot::DataTextureMaterial"]
  classQAccelPlot_1_1DataTextureMaterial --> classQAccelPlot_1_1BandMaterial
  click classQAccelPlot_1_1DataTextureMaterial "../classQAccelPlot_1_1DataTextureMaterial/" "Open QAccelPlot::DataTextureMaterial"

  external_base_classQAccelPlot_1_1DataTextureMaterial_1["QSGMaterial"]
  external_base_classQAccelPlot_1_1DataTextureMaterial_1 --> classQAccelPlot_1_1DataTextureMaterial

Classes¶

Type	Name
struct	Vertex Vertex layout of the band triangle strip: two vertices per data point.

Public Attributes¶

Type	Name
float	dataPointCount = `{0.0f}` Number of data points in the data texture (used to clamp neighbor lookups).

Public Attributes inherited from QAccelPlot::DataTextureMaterial¶

See QAccelPlot::DataTextureMaterial

Type	Name
QColor	color = `{Qt::blue}` Line/fill color uniform.
std::shared_ptr< DataTexture >	dataTexture Data texture sampled by the shader. Materials drawing the same samples may share one.
QVector2D	domainMax = `{1.0f, 1.0f}` Maximum data-space coordinate.
QVector2D	domainMin = `{0.0f, 0.0f}` Minimum data-space coordinate.
float	logScaleX = `{0.0f}` 1.0 when the X axis uses log scale (float for std140 UBO compatibility).
float	logScaleY = `{0.0f}` 1.0 when the Y axis uses log scale (float for std140 UBO compatibility).
float	useVertexColor = `{0.0f}` 1.0 when per-vertex color overrides `color` (float for std140 UBO compatibility).
QVector2D	viewportSize = `{800.0f, 600.0f}` Viewport size in pixels.

Public Functions¶

Type	Name
	BandMaterial () Constructs a BandMaterial with default uniform values.
QSGMaterialShader *	createShader (QSGRendererInterface::RenderMode) override const Creates and returns the band shader program.
QSGMaterialType *	type () override const Returns the unique material type identifier for this class.

Public Functions inherited from QAccelPlot::DataTextureMaterial¶

See QAccelPlot::DataTextureMaterial

Type	Name
	DataTextureMaterial () Constructs an empty DataTextureMaterial .
int	compare (const QSGMaterial * other) override const Compares shared uniform fields; delegates type-specific fields to `compareExtra()` .
QSGTexture *	sampledTexture () const Returns the texture the shader samples, or `nullptr` before`dataTexture` holds an upload.
void	uploadTexture (QQuickWindow * window, const float * data, int floatCount) Uploads floatCount raw floats from__data into`dataTexture` , creating it when it is`nullptr` .
	~DataTextureMaterial () override

Public Static Functions¶

Type	Name
const QSGGeometry::AttributeSet &	vertexAttributes () Returns the vertex attribute set matching `Vertex :` __`{float` id, float edge} (8 bytes).

Public Static Functions inherited from QAccelPlot::DataTextureMaterial¶

See QAccelPlot::DataTextureMaterial

Type	Name
const QSGGeometry::AttributeSet &	attributeSet () Returns the shared vertex attribute set: `{float` id, float param, uchar4 color} (12 bytes).
void	commitTexture (QSGMaterialShader::RenderState & state, int binding, QSGTexture texture, const DataTexture** * data) Commits the texture of data to sampler__binding (call from`updateSampledImage` ). Does nothing before an upload.
const QSGGeometry::AttributeSet &	vertexIndexAttributeSet () Returns the attribute set of marker quads: one ignored `uchar4` placeholder (4 bytes).
bool	writeCommonUniforms (char * buf, int bufSize, const QMatrix4x4 & matrix, const DataTextureMaterial * mat) Writes the shared UBO prefix (transform + color + domain + flags) into buf .

Protected Functions¶

Type	Name
virtual int	compareExtra (const QSGMaterial * other) override const Compares the band-specific uniforms after the base-class comparison succeeds.

Protected Functions inherited from QAccelPlot::DataTextureMaterial¶

See QAccelPlot::DataTextureMaterial

Type	Name
virtual int	compareExtra (const QSGMaterial * other) const Subclass hook for `compare()` — called after the shared fields compare equal.

Detailed Description¶

The data texture holds three floats per data point. Vertices carry only a data point index and an edge selector, so panning and zooming change uniforms only.

Public Attributes Documentation¶

variable dataPointCount¶

Number of data points in the data texture (used to clamp neighbor lookups).

float QAccelPlot::BandMaterial::dataPointCount;

Public Functions Documentation¶

function BandMaterial¶

Constructs a BandMaterial with default uniform values.

QAccelPlot::BandMaterial::BandMaterial ()

function createShader¶

Creates and returns the band shader program.

QSGMaterialShader * QAccelPlot::BandMaterial::createShader (
    QSGRendererInterface::RenderMode
) override const

function type¶

Returns the unique material type identifier for this class.

QSGMaterialType * QAccelPlot::BandMaterial::type () override const

Public Static Functions Documentation¶

function vertexAttributes¶

Returns the vertex attribute set matching Vertex : __{float id, float edge} (8 bytes).

static const QSGGeometry::AttributeSet & QAccelPlot::BandMaterial::vertexAttributes ()

Protected Functions Documentation¶

function compareExtra¶

Compares the band-specific uniforms after the base-class comparison succeeds.

virtual int QAccelPlot::BandMaterial::compareExtra (
    const QSGMaterial * other
) override const

Implements QAccelPlot::DataTextureMaterial::compareExtra

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