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29 changes: 29 additions & 0 deletions
29
backend/src/main/java/com/nestapp/files/dxf/reader/Circle.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| package com.nestapp.files.dxf.reader | ||
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| import java.awt.geom.Ellipse2D | ||
| import java.awt.geom.Path2D | ||
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| internal class Circle(type: String?) : Entity(type!!), AutoPop { | ||
| private var circle: Ellipse2D.Double = Ellipse2D.Double() | ||
| var cx: Double = 0.0 | ||
| var cy: Double = 0.0 | ||
| var radius: Double = 0.0 | ||
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| override fun addParam(gCode: Int, value: String) { | ||
| when (gCode) { | ||
| 10 -> cx = value.toDouble() | ||
| 20 -> cy = value.toDouble() | ||
| 40 -> radius = value.toDouble() | ||
| } | ||
| } | ||
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| override fun close() { | ||
| circle.setFrame(cx - radius, cy - radius, radius * 2, radius * 2) | ||
| } | ||
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| override fun toPath2D(): Path2D.Double { | ||
| val path = Path2D.Double() | ||
| path.append(circle, false) | ||
| return path | ||
| } | ||
| } |
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109 changes: 109 additions & 0 deletions
109
backend/src/main/java/com/nestapp/files/dxf/reader/Polyline.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| package com.nestapp.files.dxf.reader | ||
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| import java.awt.geom.Arc2D | ||
| import java.awt.geom.Path2D | ||
| import java.awt.geom.Point2D | ||
| import kotlin.math.asin | ||
| import kotlin.math.atan2 | ||
| import kotlin.math.sqrt | ||
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| internal class Polyline(type: String?) : Entity(type!!) { | ||
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| private var path: Path2D.Double? = null | ||
| var points: MutableList<Vertex> = ArrayList() | ||
| private var firstX = 0.0 | ||
| private var firstY = 0.0 | ||
| private var lastX = 0.0 | ||
| private var lastY = 0.0 | ||
| private var firstPoint = true | ||
| private var close = false | ||
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| override fun addParam(gCode: Int, value: String) { | ||
| if (gCode == 70) { | ||
| val flags = value.toInt() | ||
| close = (flags and 1) != 0 | ||
| } | ||
| } | ||
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| override fun addChild(child: Entity?) { | ||
| if (child is Vertex) { | ||
| points.add(child) | ||
| } | ||
| } | ||
|
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| override fun close() { | ||
| path = Path2D.Double() | ||
| var bulge = 0.0 | ||
| for (vertex in points) { | ||
| if (firstPoint) { | ||
| firstPoint = false | ||
| path!!.moveTo(vertex.xx.also { lastX = it }.also { firstX = it }, vertex.yy.also { lastY = it } | ||
| .also { firstY = it }) | ||
| } else { | ||
| if (bulge != 0.0) { | ||
| path!!.append(getArcBulge(lastX, lastY, vertex.xx, vertex.yy, bulge), true) | ||
| lastX = vertex.xx | ||
| lastY = vertex.yy | ||
| } else { | ||
| path!!.lineTo(vertex.xx.also { lastX = it }, vertex.yy.also { lastY = it }) | ||
| } | ||
| } | ||
| bulge = vertex.bulge | ||
| } | ||
| if (close) { | ||
| if (bulge != 0.0) { | ||
| path!!.append(getArcBulge(lastX, lastY, firstX, firstY, bulge), true) | ||
| } else { | ||
| path!!.closePath() | ||
| } | ||
| } | ||
| } | ||
|
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| override fun toPath2D(): Path2D.Double { | ||
| return path!! | ||
| } | ||
|
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| /** | ||
| * See: http://darrenirvine.blogspot.com/2015/08/polylines-radius-bulge-turnaround.html | ||
| * | ||
| * @param sx Starting x for Arc | ||
| * @param sy Starting y for Arc | ||
| * @param ex Ending x for Arc | ||
| * @param ey Ending y for Arc | ||
| * @param bulge bulge factor (bulge > 0 = clockwise, else counterclockwise) | ||
| * @return Arc2D.Double object | ||
| */ | ||
| private fun getArcBulge(sx: Double, sy: Double, ex: Double, ey: Double, bulge: Double): Arc2D.Double { | ||
| val p1 = Point2D.Double(sx, sy) | ||
| val p2 = Point2D.Double(ex, ey) | ||
| val mp = Point2D.Double((p2.x + p1.x) / 2, (p2.y + p1.y) / 2) | ||
| val bp = Point2D.Double(mp.x - (p1.y - mp.y) * bulge, mp.y + (p1.x - mp.x) * bulge) | ||
| val u = p1.distance(p2) | ||
| val b = (2 * mp.distance(bp)) / u | ||
| val radius = u * ((1 + b * b) / (4 * b)) | ||
| val dx = mp.x - bp.x | ||
| val dy = mp.y - bp.y | ||
| val mag = sqrt(dx * dx + dy * dy) | ||
| val cp = Point2D.Double(bp.x + radius * (dx / mag), bp.y + radius * (dy / mag)) | ||
| val startAngle = 180 - Math.toDegrees(atan2(cp.y - p1.y, cp.x - p1.x)) | ||
| val opp = u / 2 | ||
| val extent = Math.toDegrees(asin(opp / radius)) * 2 | ||
| val extentAngle = if (bulge >= 0) -extent else extent | ||
| val ul = Point2D.Double(cp.x - radius, cp.y - radius) | ||
| return Arc2D.Double(ul.x, ul.y, radius * 2, radius * 2, startAngle, extentAngle, Arc2D.OPEN) | ||
| } | ||
| } | ||
|
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| internal class Vertex(type: String?) : Entity(type!!) { | ||
| var xx: Double = 0.0 | ||
| var yy: Double = 0.0 | ||
| var bulge: Double = 0.0 | ||
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| override fun addParam(gCode: Int, value: String) { | ||
| when (gCode) { | ||
| 10 -> xx = value.toDouble() | ||
| 20 -> yy = value.toDouble() | ||
| 42 -> bulge = value.toDouble() | ||
| } | ||
| } | ||
| } |
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