#region ================== Copyright (c) 2007 Pascal vd Heiden /* * Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com * This program is released under GNU General Public License * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #endregion #region ================== Namespaces using System; using System.Collections.Generic; using System.Drawing; using System.Linq; using CodeImp.DoomBuilder.Map; using CodeImp.DoomBuilder.Geometry; using CodeImp.DoomBuilder.Rendering; using CodeImp.DoomBuilder.Types; using CodeImp.DoomBuilder.VisualModes; using CodeImp.DoomBuilder.Data; #endregion namespace CodeImp.DoomBuilder.BuilderModes { internal sealed class VisualMiddleDouble : BaseVisualGeometrySidedef { #region ================== Constants #endregion #region ================== Variables private bool repeatmidtex; private Plane topclipplane; private Plane bottomclipplane; #endregion #region ================== Properties #endregion #region ================== Constructor / Setup // Constructor public VisualMiddleDouble(BaseVisualMode mode, VisualSector vs, Sidedef s) : base(mode, vs, s) { //mxd geometrytype = VisualGeometryType.WALL_MIDDLE; partname = "mid"; // Set render pass this.RenderPass = RenderPass.Mask; // We have no destructor GC.SuppressFinalize(this); } // This builds the geometry. Returns false when no geometry created. public override bool Setup() { //mxd if(Sidedef.LongMiddleTexture == MapSet.EmptyLongName) { base.SetVertices(null); return false; } Vector2D vl, vr; //mxd. lightfog flag support int lightvalue; bool lightabsolute; GetLightValue(out lightvalue, out lightabsolute); Vector2D tscale = new Vector2D(Sidedef.Fields.GetValue("scalex_mid", 1.0), Sidedef.Fields.GetValue("scaley_mid", 1.0)); Vector2D tscaleAbs = new Vector2D(Math.Abs(tscale.x), Math.Abs(tscale.y)); Vector2D toffset = new Vector2D(Sidedef.Fields.GetValue("offsetx_mid", 0.0), Sidedef.Fields.GetValue("offsety_mid", 0.0)); // Left and right vertices for this sidedef if(Sidedef.IsFront) { vl = new Vector2D(Sidedef.Line.Start.Position.x, Sidedef.Line.Start.Position.y); vr = new Vector2D(Sidedef.Line.End.Position.x, Sidedef.Line.End.Position.y); } else { vl = new Vector2D(Sidedef.Line.End.Position.x, Sidedef.Line.End.Position.y); vr = new Vector2D(Sidedef.Line.Start.Position.x, Sidedef.Line.Start.Position.y); } // Load sector data SectorData sd = mode.GetSectorData(Sidedef.Sector); SectorData osd = mode.GetSectorData(Sidedef.Other.Sector); if(!osd.Updated) osd.Update(); // Load texture if(Sidedef.LongMiddleTexture != MapSet.EmptyLongName) { base.Texture = General.Map.Data.GetTextureImage(Sidedef.LongMiddleTexture); if(base.Texture == null || base.Texture is UnknownImage) { base.Texture = General.Map.Data.UnknownTexture3D; setuponloadedtexture = Sidedef.LongMiddleTexture; } else if(!base.Texture.IsImageLoaded) { setuponloadedtexture = Sidedef.LongMiddleTexture; } } else { // Use missing texture base.Texture = General.Map.Data.MissingTexture3D; setuponloadedtexture = 0; } // Get texture scaled size. Round up, because that's apparently what GZDoom does Vector2D tsz = new Vector2D(Math.Ceiling(base.Texture.ScaledWidth / tscale.x), Math.Ceiling(base.Texture.ScaledHeight / tscale.y)); // Get texture offsets Vector2D tof = new Vector2D(Sidedef.OffsetX, Sidedef.OffsetY); tof = tof + toffset; // biwa. Also take the ForceWorldPanning MAPINFO entry into account if (General.Map.Config.ScaledTextureOffsets && (!base.Texture.WorldPanning && !General.Map.Data.MapInfo.ForceWorldPanning)) { tof = tof / tscaleAbs; tof = tof * base.Texture.Scale; // If the texture gets replaced with a "hires" texture it adds more fuckery if (base.Texture is HiResImage) tof *= tscaleAbs; // Round up, since that's apparently what GZDoom does. Not sure if this is the right place or if it also has to be done earlier tof = new Vector2D(Math.Ceiling(tof.x), Math.Ceiling(tof.y)); } // Determine texture coordinates plane as they would be in normal circumstances. // We can then use this plane to find any texture coordinate we need. // The logic here is the same as in the original VisualMiddleSingle (except that // the values are stored in a TexturePlane) // NOTE: I use a small bias for the floor height, because if the difference in // height is 0 then the TexturePlane doesn't work! TexturePlane tp = new TexturePlane(); double floorbias = (Sidedef.Sector.CeilHeight == Sidedef.Sector.FloorHeight) ? 1.0 : 0.0; double geotop = Math.Min(Sidedef.Sector.CeilHeight, Sidedef.Other.Sector.CeilHeight); double geobottom = Math.Max(Sidedef.Sector.FloorHeight, Sidedef.Other.Sector.FloorHeight); double zoffset = Sidedef.Sector.CeilHeight - Sidedef.Other.Sector.CeilHeight; //mxd // When lower unpegged is set, the middle texture is bound to the bottom if(Sidedef.Line.IsFlagSet(General.Map.Config.LowerUnpeggedFlag)) tp.tlt.y = tsz.y - (geotop - geobottom); if(zoffset > 0) tp.tlt.y -= zoffset; //mxd tp.trb.x = tp.tlt.x + Math.Round(Sidedef.Line.Length); //mxd. (G)ZDoom snaps texture coordinates to integral linedef length tp.trb.y = tp.tlt.y + (Sidedef.Sector.CeilHeight - (Sidedef.Sector.FloorHeight + floorbias)); // Apply texture offset tp.tlt += tof; tp.trb += tof; // Transform pixel coordinates to texture coordinates tp.tlt /= tsz; tp.trb /= tsz; // Left top and right bottom of the geometry that tp.vlt = new Vector3D(vl.x, vl.y, Sidedef.Sector.CeilHeight); tp.vrb = new Vector3D(vr.x, vr.y, Sidedef.Sector.FloorHeight + floorbias); // Make the right-top coordinates tp.trt = new Vector2D(tp.trb.x, tp.tlt.y); tp.vrt = new Vector3D(tp.vrb.x, tp.vrb.y, tp.vlt.z); // Keep top and bottom planes for intersection testing top = sd.Ceiling.plane; bottom = sd.Floor.plane; // Create initial polygon, which is just a quad between floor and ceiling WallPolygon poly = new WallPolygon(); poly.Add(new Vector3D(vl.x, vl.y, sd.Floor.plane.GetZ(vl))); poly.Add(new Vector3D(vl.x, vl.y, sd.Ceiling.plane.GetZ(vl))); poly.Add(new Vector3D(vr.x, vr.y, sd.Ceiling.plane.GetZ(vr))); poly.Add(new Vector3D(vr.x, vr.y, sd.Floor.plane.GetZ(vr))); // Determine initial color int lightlevel = lightabsolute ? lightvalue : sd.Ceiling.brightnessbelow + lightvalue; //mxd. This calculates light with doom-style wall shading PixelColor wallbrightness = PixelColor.FromInt(mode.CalculateBrightness(lightlevel, Sidedef)); PixelColor wallcolor = PixelColor.Modulate(sd.Ceiling.colorbelow, wallbrightness); fogfactor = CalculateFogFactor(lightlevel); poly.color = wallcolor.WithAlpha(255).ToInt(); // Cut off the part below the other floor and above the other ceiling CropPoly(ref poly, osd.Ceiling.plane, true); CropPoly(ref poly, osd.Floor.plane, true); // Determine if we should repeat the middle texture. In UDMF this is done with a flag, in Hexen with // a argument to the 121:Line_SetIdentification. See https://www.zdoom.org/w/index.php?title=Line_SetIdentification if (General.Map.UDMF) repeatmidtex = Sidedef.IsFlagSet("wrapmidtex") || Sidedef.Line.IsFlagSet("wrapmidtex"); //mxd else if (General.Map.HEXEN) repeatmidtex = Sidedef.Line.Action == 121 && (Sidedef.Line.Args[1] & 16) == 16; else repeatmidtex = false; if(!repeatmidtex) { // First determine the visible portion of the texture double textop; // Determine top portion height if(Sidedef.Line.IsFlagSet(General.Map.Config.LowerUnpeggedFlag)) textop = geobottom + tof.y + Math.Abs(tsz.y); else textop = geotop + tof.y; // Calculate bottom portion height double texbottom = textop - Math.Abs(tsz.y); // Create crop planes (we also need these for intersection testing) if (General.Map.Config.SidedefTextureSkewing) { (topclipplane, bottomclipplane) = CreateSkewClipPlanes(textop, texbottom, sd, osd); } else { topclipplane = new Plane(new Vector3D(0, 0, -1), textop); bottomclipplane = new Plane(new Vector3D(0, 0, 1), -texbottom); } // Crop polygon by these heights CropPoly(ref poly, topclipplane, true); CropPoly(ref poly, bottomclipplane, true); } //mxd. In(G)ZDoom, middle sidedef parts are not clipped by extrafloors of any type... List polygons = new List { poly }; //ClipExtraFloors(polygons, sd.ExtraFloors, true); //mxd //ClipExtraFloors(polygons, osd.ExtraFloors, true); //mxd //if(polygons.Count > 0) //{ // Keep top and bottom planes for intersection testing top = osd.Ceiling.plane; bottom = osd.Floor.plane; // Process the polygon and create vertices List verts = CreatePolygonVertices(polygons, tp, sd, lightvalue, lightabsolute); if(verts.Count > 2) { // Apply alpha to vertices byte alpha = SetLinedefRenderstyle(true); if(alpha < 255) { for(int i = 0; i < verts.Count; i++) { WorldVertex v = verts[i]; v.c = PixelColor.FromInt(v.c).WithAlpha(alpha).ToInt(); verts[i] = v; } } base.SetVertices(verts); // Set skewing UpdateSkew(); return true; } //} base.SetVertices(null); //mxd return false; } #endregion #region ================== Methods // This performs a fast test in object picking public override bool PickFastReject(Vector3D from, Vector3D to, Vector3D dir) { if(!repeatmidtex) { // When the texture is not repeated, leave when outside crop planes if((pickintersect.z < bottomclipplane.GetZ(pickintersect)) || (pickintersect.z > topclipplane.GetZ(pickintersect))) return false; } return base.PickFastReject(from, to, dir); } //mxd. Alpha based picking public override bool PickAccurate(Vector3D from, Vector3D to, Vector3D dir, ref double u_ray) { if(!BuilderPlug.Me.AlphaBasedTextureHighlighting || !Texture.IsImageLoaded || (!Texture.IsTranslucent && !Texture.IsMasked)) return base.PickAccurate(from, to, dir, ref u_ray); double u; new Line2D(from, to).GetIntersection(Sidedef.Line.Line, out u); if(Sidedef != Sidedef.Line.Front) u = 1.0f - u; // Some textures (e.g. HiResImage) may lie about their size, so use bitmap size instead int imageWidth = Texture.GetAlphaTestWidth(); int imageHeight = Texture.GetAlphaTestHeight(); // Determine texture scale... Vector2D imgscale = new Vector2D((double)Texture.Width / imageWidth, (double)Texture.Height / imageHeight); Vector2D texscale = (Texture is HiResImage) ? imgscale * Texture.Scale : Texture.Scale; // Get correct offset to texture space... int ox = (int)Math.Floor((u * Sidedef.Line.Length * UniFields.GetFloat(Sidedef.Fields, "scalex_mid", 1.0f) / texscale.x + ((Sidedef.OffsetX + UniFields.GetFloat(Sidedef.Fields, "offsetx_mid")) / imgscale.x)) % imageWidth); int oy; if (repeatmidtex) { bool pegbottom = Sidedef.Line.IsFlagSet(General.Map.Config.LowerUnpeggedFlag); double zoffset = (pegbottom ? Sidedef.Sector.FloorHeight : Sidedef.Sector.CeilHeight); oy = (int)Math.Floor(((pickintersect.z - zoffset) * UniFields.GetFloat(Sidedef.Fields, "scaley_mid", 1.0f) / texscale.y - ((Sidedef.OffsetY - UniFields.GetFloat(Sidedef.Fields, "offsety_mid")) / imgscale.y)) % imageHeight); } else { double zoffset = bottomclipplane.GetZ(pickintersect); oy = (int)Math.Ceiling(((pickintersect.z - zoffset) * UniFields.GetFloat(Sidedef.Fields, "scaley_mid", 1.0f) / texscale.y) % imageHeight); } // Make sure offsets are inside of texture dimensions... if (ox < 0) ox += imageWidth; if (oy < 0) oy += imageHeight; // Check pixel alpha Point pixelpos = new Point(General.Clamp(ox, 0, imageWidth - 1), General.Clamp(imageHeight - oy, 0, imageHeight - 1)); return (Texture.AlphaTestPixel(pixelpos.X, pixelpos.Y) && base.PickAccurate(from, to, dir, ref u_ray)); } // Return texture name public override string GetTextureName() { return this.Sidedef.MiddleTexture; } // This changes the texture protected override void SetTexture(string texturename) { this.Sidedef.SetTextureMid(texturename); General.Map.Data.UpdateUsedTextures(); this.Setup(); } protected override void SetTextureOffsetX(int x) { Sidedef.Fields.BeforeFieldsChange(); Sidedef.Fields["offsetx_mid"] = new UniValue(UniversalType.Float, (double)x); } protected override void SetTextureOffsetY(int y) { Sidedef.Fields.BeforeFieldsChange(); Sidedef.Fields["offsety_mid"] = new UniValue(UniversalType.Float, (double)y); } protected override void MoveTextureOffset(int offsetx, int offsety) { Sidedef.Fields.BeforeFieldsChange(); bool worldpanning = this.Texture.WorldPanning || General.Map.Data.MapInfo.ForceWorldPanning; double oldx = Sidedef.Fields.GetValue("offsetx_mid", 0.0); double oldy = Sidedef.Fields.GetValue("offsety_mid", 0.0); double scalex = Sidedef.Fields.GetValue("scalex_mid", 1.0); double scaley = Sidedef.Fields.GetValue("scaley_mid", 1.0); bool textureloaded = (Texture != null && Texture.IsImageLoaded); //mxd double width = textureloaded ? (worldpanning ? this.Texture.ScaledWidth / scalex : this.Texture.Width) : -1; // biwa double height = textureloaded ? (worldpanning ? this.Texture.ScaledHeight / scaley : this.Texture.Height) : -1; // biwa Sidedef.Fields["offsetx_mid"] = new UniValue(UniversalType.Float, GetNewTexutreOffset(oldx, offsetx, width)); //mxd // biwa //mxd. Don't clamp offsetY of clipped mid textures bool dontClamp = (!textureloaded || (!Sidedef.IsFlagSet("wrapmidtex") && !Sidedef.Line.IsFlagSet("wrapmidtex"))); Sidedef.Fields["offsety_mid"] = new UniValue(UniversalType.Float, GetNewTexutreOffset(oldy, offsety, dontClamp ? double.MaxValue : Texture.Height)); // biwa } protected override Point GetTextureOffset() { double oldx = Sidedef.Fields.GetValue("offsetx_mid", 0.0); double oldy = Sidedef.Fields.GetValue("offsety_mid", 0.0); return new Point((int)oldx, (int)oldy); } //mxd protected override void ResetTextureScale() { Sidedef.Fields.BeforeFieldsChange(); if(Sidedef.Fields.ContainsKey("scalex_mid")) Sidedef.Fields.Remove("scalex_mid"); if(Sidedef.Fields.ContainsKey("scaley_mid")) Sidedef.Fields.Remove("scaley_mid"); } //mxd public override void OnTextureFit(FitTextureOptions options) { if(!General.Map.UDMF) return; if(string.IsNullOrEmpty(Sidedef.MiddleTexture) || Sidedef.MiddleTexture == "-" || !Texture.IsImageLoaded) return; FitTexture(options); Setup(); } /// /// Updates the value for texture skewing. Has to be done after the texture is set. /// public void UpdateSkew() { // Reset skew = new Vector2f(0.0f); if (!General.Map.Config.SidedefTextureSkewing) return; string skewtype = Sidedef.Fields.GetValue("skew_middle_type", "none"); if ((skewtype == "front_floor" || skewtype == "front_ceiling" || skewtype == "back_floor" || skewtype == "back_ceiling") && Texture != null) { double leftz, rightz; if(skewtype == "front_floor") { if (Sidedef.IsFront) { Plane plane = Sector.GetSectorData().Floor.plane; leftz = plane.GetZ(Sidedef.Line.Start.Position); rightz = plane.GetZ(Sidedef.Line.End.Position); } else { Plane plane = mode.GetSectorData(Sidedef.Other.Sector).Floor.plane; leftz = plane.GetZ(Sidedef.Line.End.Position); rightz = plane.GetZ(Sidedef.Line.Start.Position); } } else if(skewtype == "front_ceiling") { if (Sidedef.IsFront) { Plane plane = Sector.GetSectorData().Ceiling.plane; leftz = plane.GetZ(Sidedef.Line.Start.Position); rightz = plane.GetZ(Sidedef.Line.End.Position); } else { Plane plane = mode.GetSectorData(Sidedef.Other.Sector).Ceiling.plane; leftz = plane.GetZ(Sidedef.Line.End.Position); rightz = plane.GetZ(Sidedef.Line.Start.Position); } } else if (skewtype == "back_floor") { if (Sidedef.IsFront) { Plane plane = mode.GetSectorData(Sidedef.Other.Sector).Floor.plane; leftz = plane.GetZ(Sidedef.Line.Start.Position); rightz = plane.GetZ(Sidedef.Line.End.Position); } else { Plane plane = Sector.GetSectorData().Floor.plane; leftz = plane.GetZ(Sidedef.Line.End.Position); rightz = plane.GetZ(Sidedef.Line.Start.Position); } } else // Back ceiling { if (Sidedef.IsFront) { Plane plane = mode.GetSectorData(Sidedef.Other.Sector).Ceiling.plane; leftz = plane.GetZ(Sidedef.Line.Start.Position); rightz = plane.GetZ(Sidedef.Line.End.Position); } else { Plane plane = Sector.GetSectorData().Ceiling.plane; leftz = plane.GetZ(Sidedef.Line.End.Position); rightz = plane.GetZ(Sidedef.Line.Start.Position); } } skew = new Vector2f( Vertices.Min(v => v.u), // Get the lowest horizontal texture offset (float)((rightz - leftz) / Sidedef.Line.Length * ((double)Texture.Width / Texture.Height)) ); } } /// /// Creates clipping planes for skewed sidedefs /// /// The texture's top position /// The texture's bottom position /// This sidedef's sector data /// The other sidedef's sector data /// The top and bottom clipping planes private (Plane, Plane) CreateSkewClipPlanes(double textop, double texbottom, SectorData sd, SectorData osd) { string skewtype = Sidedef.Fields.GetValue("skew_middle_type", "none"); if ((skewtype == "front_floor" || skewtype == "front_ceiling" || skewtype == "back_floor" || skewtype == "back_ceiling") && Texture != null) { double diff; Line2D line; if (skewtype == "front_ceiling") (diff, line) = GetZDiff(false, true); else if(skewtype == "back_ceiling") (diff, line) = GetZDiff(false, false); else if(skewtype == "front_floor") (diff, line) = GetZDiff(true, true); else // back_floor (diff, line) = GetZDiff(true, false); Vector2D v3 = line.GetPerpendicular() * 10 + line.v1; Plane topplane = new Plane( new Vector3D(line.v1, textop), new Vector3D(line.v2, textop + diff), new Vector3D(v3, textop), false); Plane bottomplane = new Plane( new Vector3D(line.v1, texbottom), new Vector3D(line.v2, texbottom + diff), new Vector3D(v3, textop), true); return (topplane, bottomplane); } else // Invalid skew type { return ( new Plane(new Vector3D(0, 0, -1), textop), new Plane(new Vector3D(0, 0, 1), -texbottom) ); } // Returns the z position at the start and end vertices of the line, and a line that always goes from left to right (double, Line2D) GetZDiff(bool floor, bool front) { double leftz, rightz; Vector2D ls, le; if (Sidedef.IsFront) { ls = Sidedef.Line.Start.Position; le = Sidedef.Line.End.Position; if (floor) { if (front) { leftz = sd.Floor.plane.GetZ(Sidedef.Line.Start.Position); rightz = sd.Floor.plane.GetZ(Sidedef.Line.End.Position); } else { leftz = osd.Floor.plane.GetZ(Sidedef.Line.Start.Position); rightz = osd.Floor.plane.GetZ(Sidedef.Line.End.Position); } } else { if (front) { leftz = sd.Ceiling.plane.GetZ(Sidedef.Line.Start.Position); rightz = sd.Ceiling.plane.GetZ(Sidedef.Line.End.Position); } else { leftz = osd.Ceiling.plane.GetZ(Sidedef.Line.Start.Position); rightz = osd.Ceiling.plane.GetZ(Sidedef.Line.End.Position); } } } else { ls = Sidedef.Line.End.Position; le = Sidedef.Line.Start.Position; if (floor) { if (front) { leftz = osd.Floor.plane.GetZ(Sidedef.Line.End.Position); rightz = osd.Floor.plane.GetZ(Sidedef.Line.Start.Position); } else { leftz = sd.Floor.plane.GetZ(Sidedef.Line.End.Position); rightz = sd.Floor.plane.GetZ(Sidedef.Line.Start.Position); } } else { if (front) { leftz = osd.Ceiling.plane.GetZ(Sidedef.Line.End.Position); rightz = osd.Ceiling.plane.GetZ(Sidedef.Line.Start.Position); } else { leftz = sd.Ceiling.plane.GetZ(Sidedef.Line.End.Position); rightz = sd.Ceiling.plane.GetZ(Sidedef.Line.Start.Position); } } } return (rightz - leftz, new Line2D(ls, le)); } } #endregion } }