Gradient.addColorStopRGBA - multiple declarations
- Function Gradient.addColorStopRGBA
- Function Gradient.addColorStopRGBA
- Function Gradient.addColorStopRGBA
Function Gradient.addColorStopRGBA
Adds a translucent color stop to a gradient pattern. The offset
specifies the location along the gradient's control vector. For
example, a linear gradient's control vector is from (x0,y0) to
(x1,y1) while a radial gradient's control vector is from any point
on the start circle to the corresponding point on the end circle.
The color is specified in the same way as in
context.setSourceRGBA().
If two (or more) stops are specified with identical offset values,
they will be sorted according to the order in which the stops are added,
(stops added earlier will compare less than stops added later).
This can be useful for reliably making sharp color transitions
instead of the typical blend.
Prototypes
void addColorStopRGBA(
double offset,
RGBA color
);
void addColorStopRGBA(
double offset,
double red,
double green,
double blue,
double alpha
);
Parameters
| Name | Description |
|---|---|
| offset | an offset in the range [0.0 .. 1.0] |
Note
If the pattern is not a gradient pattern, (eg. a linear or radial pattern), then the pattern will be put into an error status with a status of CAIRO_STATUS_PATTERN_TYPE_MISMATCH.
Function Gradient.addColorStopRGBA
Adds a translucent color stop to a gradient pattern. The offset
specifies the location along the gradient's control vector. For
example, a linear gradient's control vector is from (x0,y0) to
(x1,y1) while a radial gradient's control vector is from any point
on the start circle to the corresponding point on the end circle.
The color is specified in the same way as in
context.setSourceRGBA().
If two (or more) stops are specified with identical offset values,
they will be sorted according to the order in which the stops are added,
(stops added earlier will compare less than stops added later).
This can be useful for reliably making sharp color transitions
instead of the typical blend.
Prototypes
void addColorStopRGBA(
double offset,
RGBA color
);
void addColorStopRGBA(
double offset,
double red,
double green,
double blue,
double alpha
);
Parameters
| Name | Description |
|---|---|
| offset | an offset in the range [0.0 .. 1.0] |
Note
If the pattern is not a gradient pattern, (eg. a linear or radial pattern), then the pattern will be put into an error status with a status of CAIRO_STATUS_PATTERN_TYPE_MISMATCH.
Function Gradient.addColorStopRGBA
Adds a translucent color stop to a gradient pattern. The offset
specifies the location along the gradient's control vector. For
example, a linear gradient's control vector is from (x0,y0) to
(x1,y1) while a radial gradient's control vector is from any point
on the start circle to the corresponding point on the end circle.
The color is specified in the same way as in
context.setSourceRGBA().
If two (or more) stops are specified with identical offset values,
they will be sorted according to the order in which the stops are added,
(stops added earlier will compare less than stops added later).
This can be useful for reliably making sharp color transitions
instead of the typical blend.
Prototypes
void addColorStopRGBA(
double offset,
RGBA color
);
void addColorStopRGBA(
double offset,
double red,
double green,
double blue,
double alpha
);
Parameters
| Name | Description |
|---|---|
| offset | an offset in the range [0.0 .. 1.0] |
Note
If the pattern is not a gradient pattern, (eg. a linear or radial pattern), then the pattern will be put into an error status with a status of CAIRO_STATUS_PATTERN_TYPE_MISMATCH.
Authors
| Johannes Pfau | cairoD |
| Andrej Mitrovic | cairoD |
| cairo team | cairo |
Copyright
License
| cairoD wrapper/bindings | Boost License 1.0 |
| cairo | LGPL 2.1 / MPL 1.1 |