优化圆弧段渲染，使用完整车辆长方体替代多段长方体，提升可视化效果
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@ -2725,91 +2725,8 @@ namespace NavisworksTransport
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lineMarker.SampledPoints != null &&
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lineMarker.SampledPoints.Count >= 2)
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{
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// 圆弧段：多段长方体拼接
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// 为了避免外侧出现缝隙，需要根据外侧弧线长度调整每个长方体的长度（厚度）
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// 计算外侧弧线长度 = (圆弧半径 + 宽度/2) * 偏转角
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// 注意：宽度是长方体的总宽度，所以半径是 width/2
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double outerArcRadius = width / 2.0; // 长方体的半径（宽度的一半）
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double outerArcLength = 0;
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double centerArcRadius = 0;
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if (lineMarker.Trajectory != null)
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{
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centerArcRadius = lineMarker.Trajectory.ActualRadius;
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outerArcLength = (centerArcRadius + outerArcRadius) * lineMarker.Trajectory.DeflectionAngle;
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}
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// 计算每个长方体在外侧应该覆盖的长度
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int segmentCount = lineMarker.SampledPoints.Count - 1;
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double outerSegmentLength = outerArcLength / segmentCount;
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// 提前计算比例因子，避免在循环中重复计算
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double lengthScaleFactor = (centerArcRadius + outerArcRadius) / centerArcRadius;
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// 设置颜色和透明度
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graphics.Color(lineMarker.Color, lineMarker.Opacity);
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// 添加过渡切片（在第一个切片前）
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// 从第一个切片反向画一个切片，填补外侧缝隙
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// 计算第一个切片的方向（从 SampledPoints[0] 到 SampledPoints[1]）
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var firstSliceDirection = new Vector3D(
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lineMarker.SampledPoints[1].X - lineMarker.SampledPoints[0].X,
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lineMarker.SampledPoints[1].Y - lineMarker.SampledPoints[0].Y,
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lineMarker.SampledPoints[1].Z - lineMarker.SampledPoints[0].Z
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);
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var firstSliceLength = Math.Sqrt(
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firstSliceDirection.X * firstSliceDirection.X +
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firstSliceDirection.Y * firstSliceDirection.Y +
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firstSliceDirection.Z * firstSliceDirection.Z
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);
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firstSliceDirection = new Vector3D(
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firstSliceDirection.X / firstSliceLength,
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firstSliceDirection.Y / firstSliceLength,
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firstSliceDirection.Z / firstSliceLength
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);
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// 反向切片：从 SampledPoints[0] 沿第一个切片的反方向延伸
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// 使用完整的 outerSegmentLength 作为长度
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var reverseSliceEndPoint = new Point3D(
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lineMarker.SampledPoints[0].X - firstSliceDirection.X * outerSegmentLength,
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lineMarker.SampledPoints[0].Y - firstSliceDirection.Y * outerSegmentLength,
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lineMarker.SampledPoints[0].Z - firstSliceDirection.Z * outerSegmentLength
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);
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RenderCuboidMarkerWithLength(
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graphics,
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reverseSliceEndPoint,
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lineMarker.SampledPoints[0],
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width,
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lineMarker.Height,
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outerSegmentLength,
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lineMarker.HorizontalDirection
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);
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for (int i = 0; i < lineMarker.SampledPoints.Count - 1; i++)
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{
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// 计算当前段的中心线长度
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double centerSegmentLength = GeometryHelper.CalculatePointDistance(
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lineMarker.SampledPoints[i],
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lineMarker.SampledPoints[i + 1]
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);
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// 计算长方体应该使用的长度（基于外侧弧线）
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double cuboidLength = centerSegmentLength * lengthScaleFactor;
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// 渲染长方体，使用调整后的长度
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RenderCuboidMarkerWithLength(
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graphics,
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lineMarker.SampledPoints[i],
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lineMarker.SampledPoints[i + 1],
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width,
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lineMarker.Height,
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cuboidLength,
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lineMarker.HorizontalDirection
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);
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}
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// 圆弧段：在每个采样点渲染完整的车辆长方体
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RenderArcSegmentCuboids(graphics, lineMarker, width);
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}
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else
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{
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@ -2827,6 +2744,103 @@ namespace NavisworksTransport
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}
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}
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/// <summary>
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/// 渲染圆弧段的车辆长方体
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/// 在每个采样点处渲染一个完整的车辆长方体，中心在采样点，向前后各延伸 L/2
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/// </summary>
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/// <param name="graphics">图形上下文</param>
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/// <param name="lineMarker">连线标记（必须是圆弧段）</param>
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/// <param name="width">长方体宽度</param>
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private void RenderArcSegmentCuboids(Graphics graphics, LineMarker lineMarker, double width)
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{
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// 设置颜色和透明度
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graphics.Color(lineMarker.Color, lineMarker.Opacity);
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// 在每个采样点处渲染完整的车辆长方体
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for (int i = 0; i < lineMarker.SampledPoints.Count; i++)
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{
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// 计算当前采样点的切线方向
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Vector3D tangent = CalculateTangentAtSamplePoint(lineMarker.SampledPoints, i);
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// 计算长方体的起点和终点（沿切线方向，各延伸 L/2）
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var halfLength = _passageAlongPath / 2.0;
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var startPoint = new Point3D(
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lineMarker.SampledPoints[i].X - tangent.X * halfLength,
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lineMarker.SampledPoints[i].Y - tangent.Y * halfLength,
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lineMarker.SampledPoints[i].Z - tangent.Z * halfLength
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);
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var endPoint = new Point3D(
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lineMarker.SampledPoints[i].X + tangent.X * halfLength,
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lineMarker.SampledPoints[i].Y + tangent.Y * halfLength,
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lineMarker.SampledPoints[i].Z + tangent.Z * halfLength
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);
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RenderCuboidMarkerWithLength(
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graphics,
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startPoint,
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endPoint,
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width,
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lineMarker.Height,
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_passageAlongPath,
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lineMarker.HorizontalDirection
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);
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}
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}
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/// <summary>
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/// 计算采样点处的切线方向
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/// </summary>
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/// <param name="sampledPoints">采样点列表</param>
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/// <param name="index">当前采样点索引</param>
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/// <returns>归一化的切线向量</returns>
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private Vector3D CalculateTangentAtSamplePoint(List<Point3D> sampledPoints, int index)
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{
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Vector3D tangent;
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if (index == 0)
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{
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// 第一个点：使用到下一点的向量作为切线
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tangent = new Vector3D(
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sampledPoints[1].X - sampledPoints[0].X,
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sampledPoints[1].Y - sampledPoints[0].Y,
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sampledPoints[1].Z - sampledPoints[0].Z
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);
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}
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else if (index == sampledPoints.Count - 1)
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{
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// 最后一个点：使用从上一点到当前点的向量作为切线
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tangent = new Vector3D(
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sampledPoints[index].X - sampledPoints[index - 1].X,
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sampledPoints[index].Y - sampledPoints[index - 1].Y,
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sampledPoints[index].Z - sampledPoints[index - 1].Z
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);
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}
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else
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{
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// 中间点：使用前后两点的平均方向作为切线
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var prev = new Vector3D(
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sampledPoints[index].X - sampledPoints[index - 1].X,
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sampledPoints[index].Y - sampledPoints[index - 1].Y,
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sampledPoints[index].Z - sampledPoints[index - 1].Z
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);
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var next = new Vector3D(
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sampledPoints[index + 1].X - sampledPoints[index].X,
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sampledPoints[index + 1].Y - sampledPoints[index].Y,
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sampledPoints[index + 1].Z - sampledPoints[index].Z
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);
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tangent = new Vector3D(prev.X + next.X, prev.Y + next.Y, prev.Z + next.Z);
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}
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// 归一化切线向量
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var tangentLength = Math.Sqrt(tangent.X * tangent.X + tangent.Y * tangent.Y + tangent.Z * tangent.Z);
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if (tangentLength > 0.001)
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{
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tangent = new Vector3D(tangent.X / tangentLength, tangent.Y / tangentLength, tangent.Z / tangentLength);
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}
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return tangent;
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}
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/// <summary>
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/// 渲染点标记
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