/// <summary>
/// Creates an instance of <see cref="LinePointUVAndSegment"/> with <see cref="Parameter"/>, <see cref="Point"/>, and <see cref="UV"/> values from <paramref name="linePoint"/>, but with all other public fields explicitly specified.
/// </summary>
/// <param name="linePoint">The line point used for <see cref="Parameter"/>, <see cref="Point"/>, and <see cref="UV"/> values.</param>
/// <param name="otherPoint">The other point in the segment.</param>
/// <param name="tangent">The specified tangent vector of the segment.</param>
/// <param name="normal">The specified normal vector of the segment.</param>
/// <param name="length">The specified length of the segment.</param>
public LinePointUVAndSegment(LinePointUV linePoint, Vector2 otherPoint, Vector2 tangent, Vector2 normal, float length)
{
Parameter = linePoint.Parameter;
Point = linePoint.Point;
UV = linePoint.UV;
OtherPoint = otherPoint;
SegmentTangent = tangent;
SegmentNormal = normal;
SegmentLength = length;
}
/// <summary>
/// Creates a new instance of <see cref="LinePointUVAndSegment"/> based on the starting point <paramref name="linePoint"/> and filling in segment information based on the <paramref name="otherPoint"/>.
/// </summary>
/// <param name="linePoint">The line point which is the start of the line segment.</param>
/// <param name="otherPoint">The other point in the line segment.</param>
public LinePointUVAndSegment(LinePointUV linePoint, Vector2 otherPoint)
{
Parameter = linePoint.Parameter;
Point = linePoint.Point;
UV = linePoint.UV;
OtherPoint = otherPoint;
var segmentVector = otherPoint - linePoint.Point;
SegmentTangent = segmentVector.normalized;
SegmentNormal = NormalUtil.NormalFromTangent(SegmentTangent);
SegmentLength = segmentVector.magnitude;
}
/// <summary> Gets the position of a <see cref="LinePointUV"/>.</summary>
/// <param name="linePointUv">The <see cref="LinePointUV"/>.</param>
private static Vector2 GetVector(LinePointUV linePointUv)
{
return(linePointUv.Point);
}
/// <summary>
/// Average with another <see cref="LinePointUV"/>.
/// </summary>
/// <param name="other">The other point.</param>
/// <param name="fractionOfOther">The fractional weight of the other point in the average.</param>
public LinePointUV AverageWith(LinePointUV other, float fractionOfOther)
{
float fractionOfThis = 1f - fractionOfOther;
return(new LinePointUV(fractionOfThis * Parameter + fractionOfOther * other.Parameter, fractionOfThis * Point + fractionOfOther * other.Point, fractionOfThis * UV + fractionOfOther * other.UV));
}
/// <summary> Gets the average of two <see cref="LinePointUV"/>.</summary>
/// <param name="firstVector">The first vector</param>
/// <param name="secondVector">The second vector</param>
/// <param name="fractionOfSecond"> The weight of the second vector in the average</param>
private static LinePointUV GetAverage(LinePointUV firstVector, LinePointUV secondVector, float fractionOfSecond)
{
return(firstVector.AverageWith(secondVector, fractionOfSecond));
}
/// <summary> Gets the average of two <see cref="ExtrudedPointUV"/>, not really caring about the line point segment indexes for the purposes of ClosestPointAlongSegmentwiseLine.</summary>
/// <param name="firstVector">The first vector</param>
/// <param name="secondVector">The second vector</param>
/// <param name="fractionOfSecond"> The weight of the second vector in the average</param>
private static ExtrudedPointUV GetAverage(ExtrudedPointUV firstVector, ExtrudedPointUV secondVector, float fractionOfSecond)
{
var averagedLinePoint = new LinePointUV(firstVector).AverageWith(new LinePointUV(secondVector), fractionOfSecond);
return(new ExtrudedPointUV(averagedLinePoint, firstVector.LinePointSegmentIndex, firstVector.LinePointSegmentIndex2));
}
/// <summary>
/// Creates and instance of <see cref="SegmentwiseExtrudedPointListUV"/> from a <see cref="LinePointUV"/> Point and UV, as well as a normal vector, extrusion amount, line Parameter, and index used for <see cref="LinePointSegmentIndex"/> and <see cref="LinePointSegmentIndex2"/>.
/// </summary>
/// <param name="linePoint">The <see cref="LinePointUV>"/> line point instance, with Point, and UV values.</param>
/// <param name="parameter">The point's parameter along the line (from a line parametrization loosely like arclength).</param>
/// <param name="normal">The normal vector used in determining the extruded point's location.</param>
/// <param name="extrusionAmount">The extrusion amount.</param>
/// <param name="lineSegmentIndex">The index used for <see cref="LinePointSegmentIndex"/> and <see cref="LinePointSegmentIndex2"/></param>
public ExtrudedPointUV(LinePointUV linePoint, float parameter, Vector2 normal, float extrusionAmount, int lineSegmentIndex) : this(parameter, linePoint.Point + normal * extrusionAmount, linePoint.UV, lineSegmentIndex, lineSegmentIndex)
{
}
/// <summary>
/// Creates an instance of <see cref="SegmentwiseExtrudedPointListUV"/> taking the <see cref="LinePointUV.Parameter"/>, <see cref="LinePointUV.Point"/> and <see cref="LinePointUV.UV"/> values along with the given <see cref="LinePointSegmentIndex"/> and <see cref="LinePointSegmentIndex2"/> values.
/// </summary>
/// <param name="linePoint">The <see cref="LinePointUV>"/> line point instance, with Parameter, Point, and UV values.</param>
/// <param name="linePointSegmentIndex">The index of the original line segment start point that this point is extruded from.</param>
/// <param name="linePointSegmentIndex2">he index of another original line segment start point that this point is extruded from (if different from <see cref="LinePointSegmentIndex"/>).</param>
public ExtrudedPointUV(LinePointUV linePoint, int linePointSegmentIndex, int linePointSegmentIndex2) : this(linePoint.Parameter, linePoint.Point, linePoint.UV, linePointSegmentIndex, linePointSegmentIndex2)
{
}
/// <summary>
/// Creates a new instance of <see cref="Vector2WithUV"/> with <see cref="Point"/> and <see cref="UV"/> values from a <paramref name="linePointUV"/>.
/// </summary>
/// <param name="linePointUV">The <see cref="LinePointUV"/> from which to take <see cref="Point"/> and <see cref="UV"/> values.</param>
internal Vector2WithUV(LinePointUV linePointUV) : this(linePointUV.Point, linePointUV.UV)
{
}
