public void Calculate_ScrollerElementIsNOTUndersizedToCursorLength_NormalizedCursoredPositionOnAxisNotWithinRange_ReturnsNonZeroVarious(
Vector2 normalizedCursoredPosition,
Vector2 scrollerElementLength,
Vector2 cursorLength,
Vector2 expected
)
{
IScroller scroller = Substitute.For <IScroller>();
scroller.ScrollerElementIsUndersizedTo(Arg.Any <Vector2>(), Arg.Any <int>()).Returns(false);
Vector2 anyCursorPosition = Vector2.zero;
ElementCursorOffsetInPixelCalculator calculator = new ElementCursorOffsetInPixelCalculator(
scroller,
cursorLength,
anyCursorPosition,
scrollerElementLength
);
for (int i = 0; i < 2; i++)
{
scroller.GetNormalizedCursoredPositionOnAxis(Arg.Any <float>(), i).Returns(normalizedCursoredPosition[i]);
float actual = calculator.Calculate(normalizedCursoredPosition[i], i);
Assert.That(actual, Is.EqualTo(expected[i]));
}
}
public void Calculate_ScrollerElementIsNOTUndersizedToCursorLength_NormalizedCursoredPositionOnAxisWithinRange_ReturnsZero(
Vector2 normalizedCursoredPosition
)
{
IScroller scroller = Substitute.For <IScroller>();
scroller.ScrollerElementIsUndersizedTo(Arg.Any <Vector2>(), Arg.Any <int>()).Returns(false);
Vector2 anyCursorLength = Vector2.zero;
Vector2 anyCursorPosition = Vector2.zero;
Vector2 anyScrollerElementLength = Vector2.zero;
ElementCursorOffsetInPixelCalculator calculator = new ElementCursorOffsetInPixelCalculator(
scroller,
anyCursorLength,
anyCursorPosition,
anyScrollerElementLength
);
float anyLocalPos = 0f;
for (int i = 0; i < 2; i++)
{
scroller.GetNormalizedCursoredPositionOnAxis(Arg.Any <float>(), i).Returns(normalizedCursoredPosition[i]);
float actual = calculator.Calculate(anyLocalPos, i);
Assert.That(actual, Is.EqualTo(0f));
}
}
public void Calculate_ScrollerElementIsUndersizedToCursorLength_ReturnLocalPosDiff(Vector2 cursorLocalPos, Vector2 scrollerElementLocalPos, Vector2 expected)
{
Vector2 anyCursorLength = new Vector2(1000f, 10000f);
Vector2 anyScrollerElementLength = new Vector2(100f, 100000f);
IScroller scroller = Substitute.For <IScroller>();
scroller.ScrollerElementIsUndersizedTo(Arg.Any <Vector2>(), Arg.Any <int>()).Returns(true);
ElementCursorOffsetInPixelCalculator calculator = new ElementCursorOffsetInPixelCalculator(
scroller,
anyCursorLength,
cursorLocalPos,
anyScrollerElementLength
);
for (int i = 0; i < 2; i++)
{
float actual = calculator.Calculate(scrollerElementLocalPos[i], i);
Assert.That(actual, Is.EqualTo(expected[i]));
}
}
public float Calculate(float scrollerElementLocalPosOnAxis, int dimension)
{
if (thisScroller.ScrollerElementIsUndersizedTo(thisCursorLength, dimension))
{
return(thisCursorLocalPosition[dimension] - scrollerElementLocalPosOnAxis);
}
else
{
float elementNormalizedCursoredPos = thisScroller.GetNormalizedCursoredPositionOnAxis(scrollerElementLocalPosOnAxis, dimension);
float normalizedOffset = elementNormalizedCursoredPos;
if (elementNormalizedCursoredPos <= 1f && elementNormalizedCursoredPos >= 0f)
{
normalizedOffset = 0f;
}
else if (elementNormalizedCursoredPos > 1f)
{
normalizedOffset = elementNormalizedCursoredPos - 1f;
}
return(normalizedOffset * (thisScrollerElementLength[dimension] - thisCursorLength[dimension]));
}
}
