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using System;
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using System.Collections.Generic;
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namespace Assistance {
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public class ToolFull: Tool {
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public static readonly Drawing.Pen pen = new Drawing.Pen("Dark Green", 10.0);
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public static readonly double levelAlpha = 0.8;
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private readonly List<dynamicsurface> stack = new List<dynamicsurface>();</dynamicsurface></dynamicsurface>
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public ToolFull(Workarea workarea): base(workarea) { }
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public override ModifierTypes getAvailableModifierTypes()
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{ return ModifierTypes.All; }
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private DynamicSurface getSurface(int level)
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{ return level > 0 ? stack[level - 1] : workarea.document.canvas; }
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private DynamicSurface getSurface()
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{ return getSurface(stack.Count); }
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public override bool paintPush() {
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stack.Add(new DynamicSurface());
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return true;
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}
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private void paintPoint(DynamicSurface surface, Cairo.Context context, Track.WayPoint point) {
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Point p = point.point.position;
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double r = pen.width*point.point.pressure;
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double rr = r + 1.0;
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surface.expandContext(ref context, new Rectangle(p.x - rr, p.y - rr, p.x + rr, p.y + rr));
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context.Save();
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pen.apply(context);
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context.Arc(p.x, p.y, r, 0.0, 2.0*Math.PI);
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context.Fill();
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context.Restore();
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}
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public override void paintTracks(List<track> tracks) {
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DynamicSurface surface = getSurface();
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Cairo.Context context = surface.getContext();
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while(true) {
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Track track = null;
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long minTicks = long.MaxValue;
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double minTimeOffset = 0.0;
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foreach(Track t in tracks) {
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if (t.wayPointsAdded > 0) {
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long ticks = t.ticks;
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double timeOffset = t.timeOffset + t.points[t.points.Count - t.wayPointsAdded].time;
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if ((ticks - minTicks)*Timer.frequency + timeOffset - minTimeOffset < 0.0) {
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track = t;
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minTicks = ticks;
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minTimeOffset = timeOffset;
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}
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}
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}
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if (track == null) break;
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paintPoint(surface, context, track.points[track.points.Count - track.wayPointsAdded]);
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--track.wayPointsAdded;
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}
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context.GetTarget().Flush();
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context.Dispose();
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}
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public override int paintApply(int count) {
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int level = stack.Count - count;
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DynamicSurface surface = getSurface(level);
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Cairo.Context context = surface.getContext();
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for(int i = level; i < stack.Count; ++i) {
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surface.expandContext(ref context, stack[i].getBounds(), true);
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stack[i].draw(context);
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}
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context.GetTarget().Flush();
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context.Dispose();
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paintPop(count);
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return count;
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}
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public override void paintCancel()
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{ getSurface().clear(); }
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public override void paintPop(int count) {
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int level = stack.Count - count;
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for(int i = stack.Count - 1; i >= level; --i)
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stack[i].Dispose();
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stack.RemoveRange(level, count);
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}
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public override void draw(Cairo.Context context) {
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double alpha = levelAlpha;
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foreach(DynamicSurface surface in stack)
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{ surface.draw(context, alpha); alpha *= levelAlpha; }
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}
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}
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}
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