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Draw the arrow on the end of the measuer line

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This commit is contained in:
larsbrubaker 2014-12-14 23:24:45 -08:00
parent fc24408e7e
commit 2ee6902414
1 changed files with 19 additions and 8 deletions
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27
PartPreviewWindow/View3D/Gui3D/HeightValueDisplay.cs
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@ -28,17 +28,12 @@ either expressed or implied, of the FreeBSD Project.
*/
using MatterHackers.Agg;
using MatterHackers.Agg.PlatformAbstract;
using MatterHackers.Agg.Transform;
using MatterHackers.Agg.UI;
using MatterHackers.Agg.VertexSource;
using MatterHackers.MeshVisualizer;
using MatterHackers.PolygonMesh;
using MatterHackers.PolygonMesh.Processors;
using MatterHackers.RayTracer;
using MatterHackers.RenderOpenGl;
using MatterHackers.VectorMath;
using System;
using System.Collections.Generic;
using System.IO;
using MatterHackers.Agg.UI;
namespace MatterHackers.MatterControl.PartPreviewWindow
{
@ -115,14 +110,30 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
{
if (drawEvent != null)
{
// draw the line that is on the ground
double yGround = (int)(startLineGroundPos.y + .5) + .5;
drawEvent.graphics2D.Line(startLineGroundPos.x, yGround, startLineGroundPos.x + HorizontalLineLength - 5, yGround, RGBA_Bytes.Black);
// and the line that is at the base of the selection
double ySelection = (int)(startLineSelectionPos.y + .5) + .5;
drawEvent.graphics2D.Line(startLineSelectionPos.x, ySelection, startLineSelectionPos.x + HorizontalLineLength - 5, ySelection, RGBA_Bytes.Black);
// draw the verticle line that shows the measurment
Vector2 pointerBottom = new Vector2(startLineGroundPos.x + HorizontalLineLength / 2, yGround);
Vector2 pointerTop = new Vector2(startLineSelectionPos.x + HorizontalLineLength / 2, ySelection);
drawEvent.graphics2D.Line(pointerBottom, pointerTop, RGBA_Bytes.Black);
Vector2 direction = pointerTop - pointerBottom;
if (direction.LengthSquared > 0)
{
PathStorage arrow = new PathStorage();
arrow.MoveTo(-3, -5);
arrow.LineTo(0, 0);
arrow.LineTo(3, -5);
double rotation = Math.Atan2(direction.y, direction.x);
IVertexSource correctRotation = new VertexSourceApplyTransform(arrow, Affine.NewRotation(rotation - MathHelper.Tau / 4));
IVertexSource inPosition = new VertexSourceApplyTransform(correctRotation, Affine.NewTranslation(pointerTop));
drawEvent.graphics2D.Render(inPosition, RGBA_Bytes.Black);
}
}
}
}