Class QAccelPlot::ErrorBarMaterial¶

ClassList > QAccelPlot > ErrorBarMaterial

Material that draws error bars from (x, y, low, high) data points in a data texture. More...

#include <ErrorBarMaterial.hpp>

Inherits the following classes: QAccelPlot::DataTextureMaterial

Inheritance diagram¶

flowchart TB
  classQAccelPlot_1_1ErrorBarMaterial["QAccelPlot::ErrorBarMaterial"]

  classQAccelPlot_1_1DataTextureMaterial["QAccelPlot::DataTextureMaterial"]
  classQAccelPlot_1_1DataTextureMaterial --> classQAccelPlot_1_1ErrorBarMaterial
  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

Public Attributes¶

Type	Name
float	antialiasing = `{1.0f}` 1.0 to smooth the edges of the lines and caps.
float	capLength = `{8.0f}` Length of the caps in pixels; 0 draws none.
float	errorBarCount = `{0.0f}` Number of error bars drawn; vertices beyond them are culled.
float	horizontal = `{0.0f}` 1.0 when the bounds lie on the X axis (float for std140 UBO compatibility).
QColor	hoverColor = `{Qt::transparent}` Color of the highlighted error bar.
float	hoveredIndex = `{-1.0f}` Index of the highlighted error bar, or -1 for none.
float	lineWidth = `{1.5f}` Width of the lines and caps in pixels.
float	offset = `{0.0f}` Shift of every error bar across its bounds, in data units.

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 Static Attributes¶

Type	Name
constexpr int	kVerticesPerErrorBar = `{18}` Vertices per error bar: a quad of two triangles for the line and for each cap.

Public Functions¶

Type	Name
	ErrorBarMaterial () Constructs an ErrorBarMaterial with default uniform values.
QSGMaterialShader *	createShader (QSGRendererInterface::RenderMode) override const Creates and returns the error bar 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 &	attributeSet () Returns the vertex attribute set: a 4-byte placeholder the shader ignores.

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 error-bar-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¶

Each error bar takes kVerticesPerErrorBar vertices: two triangles each for the line and the two caps. The shader derives the error bar, part, and corner from the vertex index.

Public Attributes Documentation¶

variable antialiasing¶

1.0 to smooth the edges of the lines and caps.

float QAccelPlot::ErrorBarMaterial::antialiasing;

variable capLength¶

Length of the caps in pixels; 0 draws none.

float QAccelPlot::ErrorBarMaterial::capLength;

variable errorBarCount¶

Number of error bars drawn; vertices beyond them are culled.

float QAccelPlot::ErrorBarMaterial::errorBarCount;

variable horizontal¶

1.0 when the bounds lie on the X axis (float for std140 UBO compatibility).

float QAccelPlot::ErrorBarMaterial::horizontal;

variable hoverColor¶

Color of the highlighted error bar.

QColor QAccelPlot::ErrorBarMaterial::hoverColor;

variable hoveredIndex¶

Index of the highlighted error bar, or -1 for none.

float QAccelPlot::ErrorBarMaterial::hoveredIndex;

variable lineWidth¶

Width of the lines and caps in pixels.

float QAccelPlot::ErrorBarMaterial::lineWidth;

variable offset¶

Shift of every error bar across its bounds, in data units.

float QAccelPlot::ErrorBarMaterial::offset;

Public Static Attributes Documentation¶

variable kVerticesPerErrorBar¶

Vertices per error bar: a quad of two triangles for the line and for each cap.

constexpr int QAccelPlot::ErrorBarMaterial::kVerticesPerErrorBar;

Public Functions Documentation¶

function ErrorBarMaterial¶

Constructs an ErrorBarMaterial with default uniform values.

QAccelPlot::ErrorBarMaterial::ErrorBarMaterial ()

function createShader¶

Creates and returns the error bar shader program.

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

function type¶

Returns the unique material type identifier for this class.

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

Public Static Functions Documentation¶

function attributeSet¶

Returns the vertex attribute set: a 4-byte placeholder the shader ignores.

static const QSGGeometry::AttributeSet & QAccelPlot::ErrorBarMaterial::attributeSet ()

Protected Functions Documentation¶

function compareExtra¶

Compares the error-bar-specific uniforms after the base-class comparison succeeds.

virtual int QAccelPlot::ErrorBarMaterial::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/ErrorBarMaterial.hpp