public static ShapeDecoration lerp(ShapeDecoration a, ShapeDecoration b, float t)
{
if (a == null && b == null)
{
return(null);
}
if (a != null && b != null)
{
if (t == 0.0)
{
return(a);
}
if (t == 1.0)
{
return(b);
}
}
return(new ShapeDecoration(
color: Color.lerp(a?.color, b?.color, t),
gradient: Gradient.lerp(a?.gradient, b?.gradient, t),
image: t < 0.5 ? a.image : b.image,
shadows: BoxShadow.lerpList(a?.shadows, b?.shadows, t),
shape: ShapeBorder.lerp(a?.shape, b?.shape, t)
));
}
void _precache(Rect rect)
{
D.assert(rect != null);
if (rect == _lastRect)
{
return;
}
if (_interiorPaint == null && (_decoration.color != null || _decoration.gradient != null))
{
_interiorPaint = new Paint();
if (_decoration.color != null)
{
_interiorPaint.color = _decoration.color;
}
}
if (_decoration.gradient != null)
{
// this._interiorPaint.shader = this._decoration.gradient.createShader(rect);
}
if (_decoration.shadows != null)
{
if (_shadowCount == null)
{
_shadowCount = _decoration.shadows.Count;
_shadowPaths = new Path[_shadowCount.Value];
_shadowPaints = new Paint[_shadowCount.Value];
for (int index = 0; index < _shadowCount.Value; index += 1)
{
_shadowPaints[index] = _decoration.shadows[index].toPaint();
}
}
for (int index = 0; index < _shadowCount; index += 1)
{
BoxShadow shadow = _decoration.shadows[index];
_shadowPaths[index] = _decoration.shape.getOuterPath(
rect.shift(shadow.offset).inflate(shadow.spreadRadius));
}
}
if (_interiorPaint != null || _shadowCount != null)
{
_outerPath = _decoration.shape.getOuterPath(rect);
}
if (_decoration.image != null)
{
_innerPath = _decoration.shape.getInnerPath(rect);
}
_lastRect = rect;
}
public BoxDecoration scale(float factor)
{
return(new BoxDecoration(
color: Color.lerp(null, this.color, factor),
image: this.image,
border: Border.lerp(null, this.border, factor),
borderRadius: BorderRadius.lerp(null, this.borderRadius, factor),
boxShadow: BoxShadow.lerpList(null, this.boxShadow, factor),
gradient: this.gradient?.scale(factor),
backgroundBlendMode: this.backgroundBlendMode,
shape: this.shape
));
}
public static BoxDecoration lerp(BoxDecoration a, BoxDecoration b, float t)
{
if (a == null && b == null)
{
return(null);
}
if (a == null)
{
return(b.scale(t));
}
if (b == null)
{
return(a.scale(1.0f - t));
}
if (t == 0.0)
{
return(a);
}
if (t == 1.0)
{
return(b);
}
return(new BoxDecoration(
color: Color.lerp(a.color, b.color, t),
image: t < 0.5 ? a.image : b.image,
border: Border.lerp(a.border, b.border, t),
borderRadius: BorderRadius.lerp(a.borderRadius, b.borderRadius, t),
boxShadow: BoxShadow.lerpList(a.boxShadow, b.boxShadow, t),
gradient: Gradient.lerp(a.gradient, b.gradient, t),
backgroundBlendMode: t < 0.5 ? a.backgroundBlendMode : b.backgroundBlendMode,
shape: t < 0.5 ? a.shape : b.shape
));
}