A linear gradient
is used with a brush%
areas with smooth color transitions.
Color transitions are based on a line, where colors are assigned to
stop points along the line, and colors for in-between points are
interpolated from the stop-point colors. The color of a point on the
gradient’s line is propagated to all points in the drawing context
that are touched by a line through the point and perpendicular to the
Creates a linear gradient with a line from (x0, y0)
to end point (x1, y1). The stops list
assigns colors to stop points along the line, where 0.0
corresponds to (x0, y0), 1.0 corresponds to
(x1, y1), and numbers in between correspond to
points in between.
Elements in stops are implicitly sorted by point (i.e., by
the number between 0.0 and 1.0). Order is preserved
for multiple elements for the same point, in which case the first
element for a given point is treated infinitesimally before the point,
and additional elements between the first and last for a stop point
are effectively ignored.
Returns the gradient’s control line as x0, y0,
x1, and y1.
Returns the gradient’s list of color stops.