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https://git.do.srb2.org/STJr/UltimateZoneBuilder.git
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399 lines
10 KiB
C#
399 lines
10 KiB
C#
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#region ================== Copyright (c) 2007 Pascal vd Heiden
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/*
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* Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
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* This program is released under GNU General Public License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#endregion
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#region ================== Namespaces
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Text;
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using System.Windows.Forms;
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using System.IO;
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using System.Reflection;
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using CodeImp.DoomBuilder.Windows;
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using CodeImp.DoomBuilder.IO;
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using CodeImp.DoomBuilder.Map;
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using CodeImp.DoomBuilder.Rendering;
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using CodeImp.DoomBuilder.Geometry;
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using System.Drawing;
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using CodeImp.DoomBuilder.Editing;
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#endregion
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namespace CodeImp.DoomBuilder.BuilderModes
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{
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public abstract class DragGeometryMode : BaseClassicMode
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{
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#region ================== Constants
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#endregion
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#region ================== Variables
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// Mouse position on map where dragging started
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private Vector2D dragstartmappos;
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// Item used as reference for snapping to the grid
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protected Vertex dragitem;
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private Vector2D dragitemposition;
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// List of old vertex positions
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private List<Vector2D> oldpositions;
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// List of selected items
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protected ICollection<Vertex> selectedverts;
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// List of non-selected items
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protected ICollection<Vertex> unselectedverts;
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// List of unstable lines
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protected ICollection<Linedef> unstablelines;
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// List of unselected lines
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protected ICollection<Linedef> snaptolines;
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// Text labels for all unstable lines
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protected LineLengthLabel[] labels;
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// Keep track of view changes
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private float lastoffsetx;
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private float lastoffsety;
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private float lastscale;
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// Options
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private bool snaptogrid; // SHIFT to toggle
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private bool snaptonearest; // CTRL to enable
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#endregion
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#region ================== Properties
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// Just keep the base mode button checked
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public override string EditModeButtonName { get { return General.Editing.PreviousStableMode.Name; } }
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#endregion
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#region ================== Constructor / Disposer
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// Disposer
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public override void Dispose()
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{
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// Not already disposed?
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if(!isdisposed)
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{
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// Clean up
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if(labels != null)
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foreach(LineLengthLabel l in labels) l.Dispose();
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// Done
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base.Dispose();
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}
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}
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#endregion
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#region ================== Methods
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// Constructor to start dragging immediately
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protected void StartDrag(Vector2D dragstartmappos)
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{
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// Initialize
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this.dragstartmappos = dragstartmappos;
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Cursor.Current = Cursors.AppStarting;
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// Make list of selected vertices
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selectedverts = General.Map.Map.GetMarkedVertices(true);
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// Make list of non-selected vertices
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// This will be used for snapping to nearest items
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unselectedverts = General.Map.Map.GetMarkedVertices(false);
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// Get the nearest vertex for snapping
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dragitem = MapSet.NearestVertex(selectedverts, dragstartmappos);
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// Lines to snap to
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snaptolines = General.Map.Map.LinedefsFromMarkedVertices(true, false, false);
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// Make old positions list
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// We will use this as reference to move the vertices, or to move them back on cancel
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oldpositions = new List<Vector2D>(selectedverts.Count);
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foreach(Vertex v in selectedverts) oldpositions.Add(v.Position);
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// Also keep old position of the dragged item
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dragitemposition = dragitem.Position;
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// Keep view information
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lastoffsetx = renderer.OffsetX;
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lastoffsety = renderer.OffsetY;
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lastscale = renderer.Scale;
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// Make list of unstable lines only
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// These will have their length displayed during the drag
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unstablelines = MapSet.UnstableLinedefsFromVertices(selectedverts);
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// Make text labels
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labels = new LineLengthLabel[unstablelines.Count];
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int index = 0;
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foreach(Linedef l in unstablelines)
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labels[index++] = new LineLengthLabel(l.Start.Position, l.End.Position);
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Cursor.Current = Cursors.Default;
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}
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// This moves the selected geometry relatively
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// Returns true when geometry has actually moved
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private bool MoveGeometryRelative(Vector2D offset, bool snapgrid, bool snapnearest)
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{
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Vector2D oldpos = dragitem.Position;
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Vector2D anchorpos = dragitemposition + offset;
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int i = 0;
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// Snap to nearest?
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if(snapnearest)
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{
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// Find nearest unselected vertex within range
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Vertex nv = MapSet.NearestVertexSquareRange(unselectedverts, anchorpos, VerticesMode.VERTEX_HIGHLIGHT_RANGE / renderer.Scale);
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if(nv != null)
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{
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// Move the dragged item
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dragitem.Move(nv.Position);
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// Adjust the offset
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offset = nv.Position - dragitemposition;
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// Do not snap to grid!
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snapgrid = false;
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}
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else
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{
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// Find the nearest unselected line within range
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Linedef nl = MapSet.NearestLinedefRange(snaptolines, anchorpos, LinedefsMode.LINEDEF_HIGHLIGHT_RANGE / renderer.Scale);
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if(nl != null)
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{
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// Snap to grid?
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if(snaptogrid)
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{
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// Get grid intersection coordinates
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List<Vector2D> coords = nl.GetGridIntersections();
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// Find nearest grid intersection
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float found_distance = float.MaxValue;
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Vector2D found_coord = new Vector2D();
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foreach(Vector2D v in coords)
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{
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Vector2D delta = anchorpos - v;
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if(delta.GetLengthSq() < found_distance)
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{
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found_distance = delta.GetLengthSq();
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found_coord = v;
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}
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}
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// Move the dragged item
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dragitem.Move(found_coord);
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// Align to line here
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offset = found_coord - dragitemposition;
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// Do not snap to grid anymore
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snapgrid = false;
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}
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else
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{
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// Move the dragged item
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dragitem.Move(nl.NearestOnLine(anchorpos));
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// Align to line here
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offset = nl.NearestOnLine(anchorpos) - dragitemposition;
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}
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}
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}
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}
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// Snap to grid?
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if(snapgrid)
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{
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// Move the dragged item
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dragitem.Move(anchorpos);
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// Snap item to grid
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dragitem.SnapToGrid();
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// Adjust the offset
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offset += dragitem.Position - anchorpos;
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}
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// Drag item moved?
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if(!snapgrid || (dragitem.Position != oldpos))
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{
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// Move selected geometry
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foreach(Vertex v in selectedverts)
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{
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// Move vertex from old position relative to the
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// mouse position change since drag start
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v.Move(oldpositions[i] + offset);
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// Next
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i++;
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}
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// Update labels
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int index = 0;
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foreach(Linedef l in unstablelines)
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labels[index++].Move(l.Start.Position, l.End.Position);
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// Moved
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return true;
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}
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else
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{
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// No changes
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return false;
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}
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}
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// Cancelled
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public override void OnCancel()
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{
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// Move geometry back to original position
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MoveGeometryRelative(new Vector2D(0f, 0f), false, false);
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// If only a single vertex was selected, deselect it now
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if(selectedverts.Count == 1) General.Map.Map.ClearSelectedVertices();
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// Update cached values
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General.Map.Map.Update();
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// Cancel base class
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base.OnCancel();
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// Return to vertices mode
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General.Editing.ChangeMode(General.Editing.PreviousStableMode.Name);
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}
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// Mode engages
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public override void OnEngage()
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{
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base.OnEngage();
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renderer.SetPresentation(Presentation.Standard);
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}
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// Disenagaging
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public override void OnDisengage()
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{
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base.OnDisengage();
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// When not cancelled
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if(!cancelled)
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{
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Cursor.Current = Cursors.AppStarting;
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// Move geometry back to original position
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MoveGeometryRelative(new Vector2D(0f, 0f), false, false);
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// Make undo for the dragging
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General.Map.UndoRedo.CreateUndo("Drag geometry");
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// Move selected geometry to final position
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MoveGeometryRelative(mousemappos - dragstartmappos, snaptogrid, snaptonearest);
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// Stitch geometry
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if(snaptonearest) General.Map.Map.StitchGeometry();
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// Snap to map format accuracy
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General.Map.Map.SnapAllToAccuracy();
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// Update cached values
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General.Map.Map.Update();
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// Done
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Cursor.Current = Cursors.Default;
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General.Map.IsChanged = true;
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}
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}
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// This checks if the view offset/zoom changed and updates the check
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protected bool CheckViewChanged()
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{
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bool viewchanged = false;
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// View changed?
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if(renderer.OffsetX != lastoffsetx) viewchanged = true;
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if(renderer.OffsetY != lastoffsety) viewchanged = true;
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if(renderer.Scale != lastscale) viewchanged = true;
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// Keep view information
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lastoffsetx = renderer.OffsetX;
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lastoffsety = renderer.OffsetY;
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lastscale = renderer.Scale;
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// Return result
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return viewchanged;
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}
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// This updates the dragging
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private void Update()
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{
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snaptogrid = General.Interface.ShiftState ^ General.Interface.SnapToGrid;
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snaptonearest = General.Interface.CtrlState ^ General.Interface.AutoMerge;
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// Move selected geometry
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if(MoveGeometryRelative(mousemappos - dragstartmappos, snaptogrid, snaptonearest))
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{
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// Update cached values
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General.Map.Map.Update(true, false);
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// Redraw
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General.Interface.RedrawDisplay();
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}
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}
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// When edit button is released
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protected override void OnEditEnd()
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{
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// Just return to base mode, Disengage will be called automatically.
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General.Editing.ChangeMode(General.Editing.PreviousStableMode.Name);
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base.OnEditEnd();
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}
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// Mouse moving
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public override void OnMouseMove(MouseEventArgs e)
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{
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base.OnMouseMove(e);
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Update();
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}
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// When a key is released
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public override void OnKeyUp(KeyEventArgs e)
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{
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base.OnKeyUp(e);
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if((snaptogrid != (General.Interface.ShiftState ^ General.Interface.SnapToGrid)) ||
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(snaptonearest != (General.Interface.CtrlState ^ General.Interface.AutoMerge))) Update();
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}
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// When a key is pressed
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public override void OnKeyDown(KeyEventArgs e)
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{
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base.OnKeyDown(e);
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if((snaptogrid != (General.Interface.ShiftState ^ General.Interface.SnapToGrid)) ||
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(snaptonearest != (General.Interface.CtrlState ^ General.Interface.AutoMerge))) Update();
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}
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#endregion
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}
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}
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