Class QAccelPlot::HeatmapMaterial

ClassList > QAccelPlot > HeatmapMaterial

Material that colors each fragment by the value of the heatmap cell under it. More...

• #include <HeatmapMaterial.hpp>

Inherits the following classes: QSGMaterial

Inheritance diagram

flowchart TB
  classQAccelPlot_1_1HeatmapMaterial["QAccelPlot::HeatmapMaterial"]

  external_base_classQAccelPlot_1_1HeatmapMaterial_1["QSGMaterial"]
  external_base_classQAccelPlot_1_1HeatmapMaterial_1 --> classQAccelPlot_1_1HeatmapMaterial

Public Attributes

Type	Name
QVector2D	cellOffset = {0.0f, 0.0f} Offset of the cell mapping along X and Y.
QVector2D	cellRate = {0.0f, 0.0f} Per-pixel rate of the non-affine cell mappings along X and Y.
QVector2D	cellScale = {1.0f, 1.0f} Factor of the cell mapping along X and Y.
QVector2D	cellShift = {0.0f, 0.0f} log1p argument at pixel 0 of the logarithmic cell mappings along X and Y.
GradientTexture	colorMap Colormap lookup texture sampled at binding 2.
int	columnMapping = {0} Internal::HeatmapShaderMapping::Mode along X.
int	columns = {0} Cells per row.
int	rowMapping = {0} Internal::HeatmapShaderMapping::Mode along Y.
int	rows = {0} Number of rows.
float	valueLogScale = {0.0f} 1.0 to place values on the ramp in log10 instead of linearly.
float	valueMax = {1.0f} Value mapped to colormap position 1.
float	valueMin = {0.0f} Value mapped to colormap position 0.
DataTexture	values Cell values, row by row, sampled at binding 1.

Public Functions

Type	Name
	HeatmapMaterial () Constructs a HeatmapMaterial with blending enabled and batching disabled.
int	compare (const QSGMaterial * other) override const Compares the uniforms and the texture identities.
QSGMaterialShader *	createShader (QSGRendererInterface::RenderMode) override const Creates and returns the heatmap shader program.
QSGMaterialType *	type () override const Returns the unique material type identifier for this class.

Detailed Description

Item-local pixels map to fractional cell coordinates per dimension, by the formula that columnMapping and rowMapping select from Internal::HeatmapShaderMapping::Mode. The fragment shader reads the cell value from values and looks up its color in colorMap.

Public Attributes Documentation

variable cellOffset

Offset of the cell mapping along X and Y.

QVector2D QAccelPlot::HeatmapMaterial::cellOffset;

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variable cellRate

Per-pixel rate of the non-affine cell mappings along X and Y.

QVector2D QAccelPlot::HeatmapMaterial::cellRate;

---

variable cellScale

Factor of the cell mapping along X and Y.

QVector2D QAccelPlot::HeatmapMaterial::cellScale;

---

variable cellShift

log1p argument at pixel 0 of the logarithmic cell mappings along X and Y.

QVector2D QAccelPlot::HeatmapMaterial::cellShift;

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variable colorMap

Colormap lookup texture sampled at binding 2.

GradientTexture QAccelPlot::HeatmapMaterial::colorMap;

---

variable columnMapping

Internal::HeatmapShaderMapping::Mode along X.

int QAccelPlot::HeatmapMaterial::columnMapping;

---

variable columns

Cells per row.

int QAccelPlot::HeatmapMaterial::columns;

---

variable rowMapping

Internal::HeatmapShaderMapping::Mode along Y.

int QAccelPlot::HeatmapMaterial::rowMapping;

---

variable rows

Number of rows.

int QAccelPlot::HeatmapMaterial::rows;

---

variable valueLogScale

1.0 to place values on the ramp in log10 instead of linearly.

float QAccelPlot::HeatmapMaterial::valueLogScale;

---

variable valueMax

Value mapped to colormap position 1.

float QAccelPlot::HeatmapMaterial::valueMax;

---

variable valueMin

Value mapped to colormap position 0.

float QAccelPlot::HeatmapMaterial::valueMin;

---

variable values

Cell values, row by row, sampled at binding 1.

DataTexture QAccelPlot::HeatmapMaterial::values;

---

Public Functions Documentation

function HeatmapMaterial

Constructs a HeatmapMaterial with blending enabled and batching disabled.

QAccelPlot::HeatmapMaterial::HeatmapMaterial () 

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function compare

Compares the uniforms and the texture identities.

int QAccelPlot::HeatmapMaterial::compare (
    const QSGMaterial * other
) override const

---

function createShader

Creates and returns the heatmap shader program.

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

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function type

Returns the unique material type identifier for this class.

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

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