QgsRandomColorRamp class
Totally random color ramp.
Contents
Returns colors generated at random, but constrained to some hardcoded saturation and value ranges to prevent ugly color generation.
Base classes
- class QgsColorRamp
- Abstract base class for color ramps.
Constructors, destructors, conversion operators
- QgsRandomColorRamp() defaulted
- Constructor for QgsRandomColorRamp.
Public functions
- auto clone() const -> QgsRandomColorRamp* override
- Creates a clone of the color ramp.
- auto color(double value) const -> QColor override
- Returns the color corresponding to a specified value.
- auto count() const -> int override
- Returns number of defined colors, or -1 if undefined.
- auto properties() const -> QgsStringMap override
- Returns a string map containing all the color ramp's properties.
- void setTotalColorCount(int colorCount) virtual
- Sets the desired total number of unique colors for the resultant ramp.
- auto type() const -> QString override
- Returns a string representing the color ramp type.
- auto value(int index) const -> double override
- Returns relative value between [0,1] of color at specified index.
Function documentation
QColor QgsRandomColorRamp::
Returns the color corresponding to a specified value.
| Parameters | |
|---|---|
| value | value between [0, 1] inclusive |
| Returns | color for value |
void QgsRandomColorRamp::
Sets the desired total number of unique colors for the resultant ramp.
| Parameters | |
|---|---|
| colorCount | number of unique colors |
Calling this method pregenerates a set of visually distinct colors which are returned by subsequent calls to color().