Class ShapeFill
How a shape's interior is painted. Fill holds one; each draw call captures its values as it is made.
public sealed class ShapeFill- Inheritance
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ShapeFill
Remarks
With no Color, the fill is the outline colour dimmed and made translucent by Alpha - the Box2D testbed's formula, kept so the physics examples match it side by side. With a colour, it is that colour at its own alpha times Alpha, which is what a dark panel behind a bright border needs and what the testbed formula cannot produce.
A gradient across the fill is Gradient.
Properties
Alpha
Fill intensity, 0 to 1; 0 leaves an unfilled outline. Defaults to 0.6, the testbed's value.
public float Alpha { get; set; }Property Value
Color
The fill's own colour, or null (the default) to fill with the outline colour, which is
what the Box2D testbed does. Set it when the two should differ - a chart marker filled in its
series colour but outlined in a neutral one, a bar with a darker edge, a light cursor ring
with a dark halo.
public Color? Color { get; set; }Property Value
Remarks
The colour is used as given, including its own alpha, with Alpha scaling only its opacity. That differs from the default path, where Alpha also darkens the outline colour the way the testbed does - which would turn a colour you chose deliberately into a muddy version of itself.
Methods
Set(Color?, float)
Sets both at once.
public void Set(Color? color, float alpha = 1)