/usr/src/castle-game-engine-4.1.1/x3d/x3dnodes_97_nurbs.inc is in castle-game-engine-src 4.1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright 2002-2013 Michalis Kamburelis.
This file is part of "Castle Game Engine".
"Castle Game Engine" is free software; see the file COPYING.txt,
included in this distribution, for details about the copyright.
"Castle Game Engine" 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.
----------------------------------------------------------------------------
}
{ NURBS nodes from VRML 97 Amendment 1 specification.
Note: Some of VRML 97 NURBS nodes are the same (or at least
backward compatible) as X3D NURBS nodes, these are defined and handled
only in x3d_nurbs.inc. } { }
{$ifdef read_interface}
TCoordinateDeformerNode = class(TAbstractGroupingNode)
public
procedure CreateNode; override;
class function ClassNodeTypeName: string; override;
{ Event: MFNode, in } { }
private FEventaddChildren: TX3DEvent;
public property EventaddChildren: TX3DEvent read FEventaddChildren;
{ Event: MFNode, in } { }
private FEventremoveChildren: TX3DEvent;
public property EventremoveChildren: TX3DEvent read FEventremoveChildren;
private FFdchildren: TMFNode;
public property Fdchildren: TMFNode read FFdchildren;
private FFdcontrolPoint: TMFVec3f;
public property FdcontrolPoint: TMFVec3f read FFdcontrolPoint;
private FFdinputCoord: TMFNode;
public property FdinputCoord: TMFNode read FFdinputCoord;
private FFdinputTransform: TMFNode;
public property FdinputTransform: TMFNode read FFdinputTransform;
private FFdoutputCoord: TMFNode;
public property FdoutputCoord: TMFNode read FFdoutputCoord;
private FFdweight: TMFFloat;
public property Fdweight: TMFFloat read FFdweight;
private FFdbboxCenter: TSFVec3f;
public property FdbboxCenter: TSFVec3f read FFdbboxCenter;
private FFdbboxSize: TSFVec3f;
public property FdbboxSize: TSFVec3f read FFdbboxSize;
private FFduDimension: TSFInt32;
public property FduDimension: TSFInt32 read FFduDimension;
private FFduKnot: TMFFloat;
public property FduKnot: TMFFloat read FFduKnot;
private FFduOrder: TSFInt32;
public property FduOrder: TSFInt32 read FFduOrder;
private FFdvDimension: TSFInt32;
public property FdvDimension: TSFInt32 read FFdvDimension;
private FFdvKnot: TMFFloat;
public property FdvKnot: TMFFloat read FFdvKnot;
private FFdvOrder: TSFInt32;
public property FdvOrder: TSFInt32 read FFdvOrder;
private FFdwDimension: TSFInt32;
public property FdwDimension: TSFInt32 read FFdwDimension;
private FFdwKnot: TMFFloat;
public property FdwKnot: TMFFloat read FFdwKnot;
private FFdwOrder: TSFInt32;
public property FdwOrder: TSFInt32 read FFdwOrder;
class function URNMatching(const URN: string): boolean; override;
end;
TNurbsCurveNode_2 = class(TAbstractX3DGeometryNode)
public
procedure CreateNode; override;
class function ClassNodeTypeName: string; override;
private FFdcontrolPoint: TMFVec3f;
public property FdcontrolPoint: TMFVec3f read FFdcontrolPoint;
private FFdweight: TMFFloat;
public property Fdweight: TMFFloat read FFdweight;
private FFdtessellation: TSFInt32;
public property Fdtessellation: TSFInt32 read FFdtessellation;
private FFdknot: TMFFloat;
public property Fdknot: TMFFloat read FFdknot;
private FFdorder: TSFInt32;
public property Fdorder: TSFInt32 read FFdorder;
class function URNMatching(const URN: string): boolean; override;
class function ForVRMLVersion(const Version: TX3DVersion): boolean; override;
function Proxy(var State: TX3DGraphTraverseState;
const OverTriangulate: boolean): TAbstractGeometryNode; override;
function ProxyUsesOverTriangulate: boolean; override;
function LocalBoundingBox(State: TX3DGraphTraverseState;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): TBox3D; override;
function BoundingBox(State: TX3DGraphTraverseState;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): TBox3D; override;
function TrianglesCount(State: TX3DGraphTraverseState; OverTriangulate: boolean;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): Cardinal; override;
end;
TNurbsGroupNode = class(TAbstractX3DGroupingNode)
public
procedure CreateNode; override;
class function ClassNodeTypeName: string; override;
private FFdtessellationScale: TSFFloat;
public property FdtessellationScale: TSFFloat read FFdtessellationScale;
class function URNMatching(const URN: string): boolean; override;
end;
TNurbsPositionInterpolatorNode_2 = class(TAbstractChildNode)
private
procedure EventSet_FractionReceive(Event: TX3DEvent; Value: TX3DField;
const Time: TX3DTime);
public
procedure CreateNode; override;
class function ClassNodeTypeName: string; override;
{ Event: SFFloat, in } { }
private FEventset_fraction: TX3DEvent;
public property Eventset_fraction: TX3DEvent read FEventset_fraction;
private FFddimension: TSFInt32;
public property Fddimension: TSFInt32 read FFddimension;
private FFdkeyValue: TMFVec3f;
public property FdkeyValue: TMFVec3f read FFdkeyValue;
private FFdkeyWeight: TMFFloat;
public property FdkeyWeight: TMFFloat read FFdkeyWeight;
private FFdknot: TMFFloat;
public property Fdknot: TMFFloat read FFdknot;
private FFdorder: TSFInt32;
public property Fdorder: TSFInt32 read FFdorder;
{ Event: SFVec3f, out } { }
private FEventvalue_changed: TX3DEvent;
public property Eventvalue_changed: TX3DEvent read FEventvalue_changed;
class function URNMatching(const URN: string): boolean; override;
class function ForVRMLVersion(const Version: TX3DVersion): boolean; override;
end;
TNurbsSurfaceNode = class(TAbstractX3DGeometryNode)
public
procedure CreateNode; override;
class function ClassNodeTypeName: string; override;
private FFdcontrolPoint: TMFVec3f;
public property FdcontrolPoint: TMFVec3f read FFdcontrolPoint;
private FFdtexCoord: TSFNode;
public property FdtexCoord: TSFNode read FFdtexCoord;
private FFduTessellation: TSFInt32;
public property FduTessellation: TSFInt32 read FFduTessellation;
private FFdvTessellation: TSFInt32;
public property FdvTessellation: TSFInt32 read FFdvTessellation;
private FFdweight: TMFFloat;
public property Fdweight: TMFFloat read FFdweight;
private FFdccw: TSFBool;
public property Fdccw: TSFBool read FFdccw;
private FFdsolid: TSFBool;
public property Fdsolid: TSFBool read FFdsolid;
private FFduDimension: TSFInt32;
public property FduDimension: TSFInt32 read FFduDimension;
private FFduKnot: TMFFloat;
public property FduKnot: TMFFloat read FFduKnot;
private FFduOrder: TSFInt32;
public property FduOrder: TSFInt32 read FFduOrder;
private FFdvDimension: TSFInt32;
public property FdvDimension: TSFInt32 read FFdvDimension;
private FFdvKnot: TMFFloat;
public property FdvKnot: TMFFloat read FFdvKnot;
private FFdvOrder: TSFInt32;
public property FdvOrder: TSFInt32 read FFdvOrder;
class function URNMatching(const URN: string): boolean; override;
function Proxy(var State: TX3DGraphTraverseState;
const OverTriangulate: boolean): TAbstractGeometryNode; override;
function ProxyUsesOverTriangulate: boolean; override;
function LocalBoundingBox(State: TX3DGraphTraverseState;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): TBox3D; override;
function BoundingBox(State: TX3DGraphTraverseState;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): TBox3D; override;
function TrianglesCount(State: TX3DGraphTraverseState; OverTriangulate: boolean;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): Cardinal; override;
end;
TNurbsTextureSurfaceNode = class(TX3DNode)
public
procedure CreateNode; override;
class function ClassNodeTypeName: string; override;
private FFdcontrolPoint: TMFVec2f;
public property FdcontrolPoint: TMFVec2f read FFdcontrolPoint;
private FFdweight: TMFFloat;
public property Fdweight: TMFFloat read FFdweight;
private FFduDimension: TSFInt32;
public property FduDimension: TSFInt32 read FFduDimension;
private FFduKnot: TMFFloat;
public property FduKnot: TMFFloat read FFduKnot;
private FFduOrder: TSFInt32;
public property FduOrder: TSFInt32 read FFduOrder;
private FFdvDimension: TSFInt32;
public property FdvDimension: TSFInt32 read FFdvDimension;
private FFdvKnot: TMFFloat;
public property FdvKnot: TMFFloat read FFdvKnot;
private FFdvOrder: TSFInt32;
public property FdvOrder: TSFInt32 read FFdvOrder;
class function URNMatching(const URN: string): boolean; override;
end;
TTrimmedSurfaceNode = class(TAbstractX3DGeometryNode)
public
procedure CreateNode; override;
class function ClassNodeTypeName: string; override;
{ Event: MFNode, in } { }
private FEventaddTrimmingContour: TX3DEvent;
public property EventaddTrimmingContour: TX3DEvent read FEventaddTrimmingContour;
{ Event: MFNode, in } { }
private FEventremoveTrimmingContour: TX3DEvent;
public property EventremoveTrimmingContour: TX3DEvent read FEventremoveTrimmingContour;
private FFdtrimmingContour: TMFNode;
public property FdtrimmingContour: TMFNode read FFdtrimmingContour;
private FFdsurface: TSFNode;
public property Fdsurface: TSFNode read FFdsurface;
class function URNMatching(const URN: string): boolean; override;
{ Geometry node not implemented } { }
function LocalBoundingBox(State: TX3DGraphTraverseState;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): TBox3D; override;
function VerticesCount(State: TX3DGraphTraverseState; OverTriangulate: boolean;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): Cardinal; override;
function TrianglesCount(State: TX3DGraphTraverseState; OverTriangulate: boolean;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): Cardinal; override;
end;
TContour2DNode_2 = class(TAbstractX3DGeometryNode)
protected
procedure DirectEnumerateActive(
Func: TEnumerateChildrenFunction); override;
public
procedure CreateNode; override;
class function ClassNodeTypeName: string; override;
class function URNMatching(const URN: string): boolean; override;
class function ForVRMLVersion(const Version: TX3DVersion): boolean; override;
{ Event: MFNode, in } { }
private FEventAddChildren: TX3DEvent;
public property EventAddChildren: TX3DEvent read FEventAddChildren;
{ Event: MFNode, in } { }
private FEventRemoveChildren: TX3DEvent;
public property EventRemoveChildren: TX3DEvent read FEventRemoveChildren;
private FFdChildren: TMFNode;
public property FdChildren: TMFNode read FFdChildren;
{ Geometry node not implemented } { }
function LocalBoundingBox(State: TX3DGraphTraverseState;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): TBox3D; override;
function VerticesCount(State: TX3DGraphTraverseState; OverTriangulate: boolean;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): Cardinal; override;
function TrianglesCount(State: TX3DGraphTraverseState; OverTriangulate: boolean;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): Cardinal; override;
end;
{$endif read_interface}
{$ifdef read_implementation}
procedure TCoordinateDeformerNode.CreateNode;
begin
inherited;
FEventaddChildren := TX3DEvent.Create(Self, 'addChildren', TMFNode, true);
Events.Add(FEventaddChildren);
FEventremoveChildren := TX3DEvent.Create(Self, 'removeChildren', TMFNode, true);
Events.Add(FEventremoveChildren);
FFdchildren := TMFNode.Create(Self, 'children', IAbstractChildNode);
Fields.Add(FFdchildren);
FFdcontrolPoint := TMFVec3f.Create(Self, 'controlPoint', []);
Fields.Add(FFdcontrolPoint);
FFdinputCoord := TMFNode.Create(Self, 'inputCoord', [TCoordinateNode]);
Fields.Add(FFdinputCoord);
FFdinputTransform := TMFNode.Create(Self, 'inputTransform', [TTransformNode]);
Fields.Add(FFdinputTransform);
FFdoutputCoord := TMFNode.Create(Self, 'outputCoord', [TCoordinateNode]);
Fields.Add(FFdoutputCoord);
FFdweight := TMFFloat.Create(Self, 'weight', []);
Fields.Add(FFdweight);
FFdbboxCenter := TSFVec3f.Create(Self, 'bboxCenter', ZeroVector3Single);
FFdbboxCenter.Exposed := false;
Fields.Add(FFdbboxCenter);
FFdbboxSize := TSFVec3f.Create(Self, 'bboxSize', Vector3Single(-1, -1, -1));
FFdbboxSize.Exposed := false;
Fields.Add(FFdbboxSize);
FFduDimension := TSFInt32.Create(Self, 'uDimension', 0);
FFduDimension.Exposed := false;
Fields.Add(FFduDimension);
FFduKnot := TMFFloat.Create(Self, 'uKnot', []);
FFduKnot.Exposed := false;
Fields.Add(FFduKnot);
FFduOrder := TSFInt32.Create(Self, 'uOrder', 2);
FFduOrder.Exposed := false;
Fields.Add(FFduOrder);
FFdvDimension := TSFInt32.Create(Self, 'vDimension', 0);
FFdvDimension.Exposed := false;
Fields.Add(FFdvDimension);
FFdvKnot := TMFFloat.Create(Self, 'vKnot', []);
FFdvKnot.Exposed := false;
Fields.Add(FFdvKnot);
FFdvOrder := TSFInt32.Create(Self, 'vOrder', 2);
FFdvOrder.Exposed := false;
Fields.Add(FFdvOrder);
FFdwDimension := TSFInt32.Create(Self, 'wDimension', 0);
FFdwDimension.Exposed := false;
Fields.Add(FFdwDimension);
FFdwKnot := TMFFloat.Create(Self, 'wKnot', []);
FFdwKnot.Exposed := false;
Fields.Add(FFdwKnot);
FFdwOrder := TSFInt32.Create(Self, 'wOrder', 2);
FFdwOrder.Exposed := false;
Fields.Add(FFdwOrder);
DefaultContainerField := 'children';
end;
class function TCoordinateDeformerNode.ClassNodeTypeName: string;
begin
Result := 'CoordinateDeformer';
end;
class function TCoordinateDeformerNode.URNMatching(const URN: string): boolean;
begin
Result := (inherited URNMatching(URN)) or
(URN = URNVRML97Nodes + ClassNodeTypeName);
end;
procedure TNurbsCurveNode_2.CreateNode;
begin
inherited;
FFdcontrolPoint := TMFVec3f.Create(Self, 'controlPoint', []);
FdcontrolPoint.ChangesAlways := [chGeometry];
Fields.Add(FFdcontrolPoint);
FFdweight := TMFFloat.Create(Self, 'weight', []);
Fdweight.ChangesAlways := [chGeometry];
Fields.Add(FFdweight);
FFdtessellation := TSFInt32.Create(Self, 'tessellation', 0);
Fdtessellation.ChangesAlways := [chGeometry];
Fields.Add(FFdtessellation);
FFdknot := TMFFloat.Create(Self, 'knot', []);
Fdknot.Exposed := false;
Fdknot.ChangesAlways := [chGeometry];
Fields.Add(FFdknot);
FFdorder := TSFInt32.Create(Self, 'order', 3);
Fdorder.Exposed := false;
Fdorder.ChangesAlways := [chGeometry];
Fields.Add(FFdorder);
end;
class function TNurbsCurveNode_2.ClassNodeTypeName: string;
begin
Result := 'NurbsCurve';
end;
class function TNurbsCurveNode_2.URNMatching(const URN: string): boolean;
begin
Result := (inherited URNMatching(URN)) or
(URN = URNVRML97Nodes + ClassNodeTypeName);
end;
class function TNurbsCurveNode_2.ForVRMLVersion(const Version: TX3DVersion): boolean;
begin
Result := Version.Major = 2;
end;
function TNurbsCurveNode_2.Proxy(var State: TX3DGraphTraverseState;
const OverTriangulate: boolean): TAbstractGeometryNode;
var
KnotDouble, WeightDouble: TDoubleList;
begin
Result := TLineSetNode.Create(NodeName, BaseUrl);
try
KnotDouble := FdKnot.Items.ToDouble;
WeightDouble := FdWeight.Items.ToDouble;
try
NurbsCurveProxy(TLineSetNode(Result), FdControlPoint.Items,
FdTessellation.Value, FdOrder.Value, KnotDouble, WeightDouble);
finally
FreeAndNil(KnotDouble);
FreeAndNil(WeightDouble);
end;
except FreeAndNil(Result); raise end;
end;
function TNurbsCurveNode_2.ProxyUsesOverTriangulate: boolean;
begin
Result := false;
end;
{ We cannot simply override Coord() and let bounding box be calculated
based on it. It would fail for curves with weigths. }
function TNurbsCurveNode_2.LocalBoundingBox(State: TX3DGraphTraverseState;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): TBox3D;
begin
Result := NurbsBoundingBox(FdControlPoint.Items, FdWeight.Items);
end;
{ We cannot simply override Coord() and let bounding box be calculated
based on it. It would fail for curves with weigths. }
function TNurbsCurveNode_2.BoundingBox(State: TX3DGraphTraverseState;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): TBox3D;
begin
Result := NurbsBoundingBox(FdControlPoint.Items, FdWeight.Items, State.Transform);
end;
function TNurbsCurveNode_2.TrianglesCount(State: TX3DGraphTraverseState; OverTriangulate: boolean;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): Cardinal;
begin
Result := 0;
end;
procedure TNurbsGroupNode.CreateNode;
begin
inherited;
FFdtessellationScale := TSFFloat.Create(Self, 'tessellationScale', 1.0);
Fields.Add(FFdtessellationScale);
end;
class function TNurbsGroupNode.ClassNodeTypeName: string;
begin
Result := 'NurbsGroup';
end;
class function TNurbsGroupNode.URNMatching(const URN: string): boolean;
begin
Result := (inherited URNMatching(URN)) or
(URN = URNVRML97Nodes + ClassNodeTypeName);
end;
procedure TNurbsPositionInterpolatorNode_2.CreateNode;
begin
inherited;
FEventset_fraction := TX3DEvent.Create(Self, 'set_fraction', TSFFloat, true);
Events.Add(FEventset_fraction);
FFddimension := TSFInt32.Create(Self, 'dimension', 0);
Fields.Add(FFddimension);
FFdkeyValue := TMFVec3f.Create(Self, 'keyValue', []);
Fields.Add(FFdkeyValue);
FFdkeyWeight := TMFFloat.Create(Self, 'keyWeight', []);
Fields.Add(FFdkeyWeight);
FFdknot := TMFFloat.Create(Self, 'knot', []);
Fields.Add(FFdknot);
FFdorder := TSFInt32.Create(Self, 'order', 4);
Fields.Add(FFdorder);
FEventvalue_changed := TX3DEvent.Create(Self, 'value_changed', TSFVec3f, false);
Events.Add(FEventvalue_changed);
DefaultContainerField := 'children';
EventSet_Fraction.OnReceive.Add(@EventSet_FractionReceive);
end;
class function TNurbsPositionInterpolatorNode_2.ClassNodeTypeName: string;
begin
Result := 'NurbsPositionInterpolator';
end;
class function TNurbsPositionInterpolatorNode_2.URNMatching(const URN: string): boolean;
begin
Result := (inherited URNMatching(URN)) or
(URN = URNVRML97Nodes + ClassNodeTypeName);
end;
class function TNurbsPositionInterpolatorNode_2.ForVRMLVersion(const Version: TX3DVersion): boolean;
begin
Result := Version.Major = 2;
end;
procedure TNurbsPositionInterpolatorNode_2.EventSet_FractionReceive(
Event: TX3DEvent; Value: TX3DField; const Time: TX3DTime);
var
Knot, KeyWeight: TDoubleList;
OutputValue: TVector3Single;
begin
if not EventValue_Changed.SendNeeded then Exit;
if FdKeyValue.Count = 0 then Exit;
if FdOrder.Value < 2 then
begin
OnWarning(wtMajor, 'VRML/X3D', 'NURBS order must be >= 2');
Exit;
end;
{ We can be sure now that
- we have ControlPoint (in KeyValue), non-nil, with at least 1 point.
- we have Order >= 2 }
{ calculate correct Knot vector }
Knot := TDoubleList.Create;
Knot.Assign(FdKnot.Items);
NurbsKnotIfNeeded(Knot, FdKeyValue.Count, FdOrder.Value, nkEndpointUniform);
KeyWeight := FdKeyWeight.Items.ToDouble;
OutputValue := NurbsCurvePoint(FdKeyValue.Items, (Value as TSFFloat).Value,
FdOrder.Value, Knot, KeyWeight, nil);
FreeAndNil(KeyWeight);
FreeAndNil(Knot);
EventValue_Changed.Send(OutputValue, Time);
end;
procedure TNurbsSurfaceNode.CreateNode;
begin
inherited;
FFdcontrolPoint := TMFVec3f.Create(Self, 'controlPoint', []);
FdcontrolPoint.ChangesAlways := [chGeometry];
Fields.Add(FFdcontrolPoint);
FFdtexCoord := TSFNode.Create(Self, 'texCoord', [TTextureCoordinateNode, TNurbsTextureSurfaceNode]);
FdtexCoord.ChangesAlways := [chGeometry];
Fields.Add(FFdtexCoord);
FFduTessellation := TSFInt32.Create(Self, 'uTessellation', 0);
FduTessellation.ChangesAlways := [chGeometry];
Fields.Add(FFduTessellation);
FFdvTessellation := TSFInt32.Create(Self, 'vTessellation', 0);
FdvTessellation.ChangesAlways := [chGeometry];
Fields.Add(FFdvTessellation);
FFdweight := TMFFloat.Create(Self, 'weight', []);
Fdweight.ChangesAlways := [chGeometry];
Fields.Add(FFdweight);
FFdccw := TSFBool.Create(Self, 'ccw', TRUE);
Fdccw.Exposed := false;
Fdccw.ChangesAlways := [chGeometry];
Fields.Add(FFdccw);
FFdsolid := TSFBool.Create(Self, 'solid', TRUE);
Fdsolid.Exposed := false;
Fdsolid.ChangesAlways := [chGeometry];
Fields.Add(FFdsolid);
FFduDimension := TSFInt32.Create(Self, 'uDimension', 0);
FduDimension.Exposed := false;
FduDimension.ChangesAlways := [chGeometry];
Fields.Add(FFduDimension);
FFduKnot := TMFFloat.Create(Self, 'uKnot', []);
FduKnot.Exposed := false;
FduKnot.ChangesAlways := [chGeometry];
Fields.Add(FFduKnot);
FFduOrder := TSFInt32.Create(Self, 'uOrder', 3);
FduOrder.Exposed := false;
FduOrder.ChangesAlways := [chGeometry];
Fields.Add(FFduOrder);
FFdvDimension := TSFInt32.Create(Self, 'vDimension', 0);
FdvDimension.Exposed := false;
FdvDimension.ChangesAlways := [chGeometry];
Fields.Add(FFdvDimension);
FFdvKnot := TMFFloat.Create(Self, 'vKnot', []);
FdvKnot.Exposed := false;
FdvKnot.ChangesAlways := [chGeometry];
Fields.Add(FFdvKnot);
FFdvOrder := TSFInt32.Create(Self, 'vOrder', 3);
FdvOrder.Exposed := false;
FdvOrder.ChangesAlways := [chGeometry];
Fields.Add(FFdvOrder);
end;
class function TNurbsSurfaceNode.ClassNodeTypeName: string;
begin
Result := 'NurbsSurface';
end;
class function TNurbsSurfaceNode.URNMatching(const URN: string): boolean;
begin
Result := (inherited URNMatching(URN)) or
(URN = URNVRML97Nodes + ClassNodeTypeName);
end;
function TNurbsSurfaceNode.Proxy(var State: TX3DGraphTraverseState;
const OverTriangulate: boolean): TAbstractGeometryNode;
var
UKnotDouble, VKnotDouble, WeightDouble: TDoubleList;
begin
Result := TIndexedQuadSetNode.Create(NodeName, BaseUrl);
try
{ For NurbsPatchSurfaceProxy (and underlying NurbsSurfacePoint)
we want knots and weights to be double-precision.
Implementing another version of
NurbsPatchSurfaceProxy (and underlying NurbsSurfacePoint)
based on Single would make a faster implementation, but it's not worth
the trouble --- VRML 97 NurbsSurface is only for compatibility,
newer models should use X3D version anyway. }
UKnotDouble := FdUKnot.Items.ToDouble;
VKnotDouble := FdVKnot.Items.ToDouble;
WeightDouble := FdWeight.Items.ToDouble;
try
NurbsPatchSurfaceProxy(TIndexedQuadSetNode(Result),
FdControlPoint.Items,
FdUTessellation.Value,
FdVTessellation.Value,
FdUDimension.Value,
FdVDimension.Value,
FdUOrder.Value,
FdVOrder.Value,
UKnotDouble,
VKnotDouble,
WeightDouble,
{ Both UClosed, VClosed are true for VRML 97 NurbsSurface.
NurbsPatchSurfaceProxy will always check whether it should be
closed based on whether limiting controlPoints match. }
true, true,
FdSolid.Value,
FdCcw.Value,
FdTexCoord.Value);
finally
FreeAndNil(UKnotDouble);
FreeAndNil(VKnotDouble);
FreeAndNil(WeightDouble);
end;
except FreeAndNil(Result); raise end;
end;
function TNurbsSurfaceNode.ProxyUsesOverTriangulate: boolean;
begin
Result := false;
end;
{ We cannot simply override Coord() and let bounding box be calculated
based on it. It would fail for curves with weigths. }
function TNurbsSurfaceNode.LocalBoundingBox(State: TX3DGraphTraverseState;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): TBox3D;
begin
Result := NurbsBoundingBox(FdControlPoint.Items, FdWeight.Items);
end;
{ We cannot simply override Coord() and let bounding box be calculated
based on it. It would fail for curves with weigths. }
function TNurbsSurfaceNode.BoundingBox(State: TX3DGraphTraverseState;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): TBox3D;
begin
Result := NurbsBoundingBox(FdControlPoint.Items, FdWeight.Items, State.Transform);
end;
function TNurbsSurfaceNode.TrianglesCount(State: TX3DGraphTraverseState; OverTriangulate: boolean;
ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): Cardinal;
var
UTess, VTess: Cardinal;
begin
if (FdUDimension.Value > 0) and
(FdVDimension.Value > 0) then
begin
UTess := ActualTessellation(FdUTessellation.Value, FdUDimension.Value);
VTess := ActualTessellation(FdVTessellation.Value, FdVDimension.Value);
Result := (UTess - 1) * (VTess - 1) * 2;
end else
Result := 0;
end;
procedure TNurbsTextureSurfaceNode.CreateNode;
begin
inherited;
FFdcontrolPoint := TMFVec2f.Create(Self, 'controlPoint', []);
Fields.Add(FFdcontrolPoint);
FFdweight := TMFFloat.Create(Self, 'weight', []);
Fields.Add(FFdweight);
FFduDimension := TSFInt32.Create(Self, 'uDimension', 0);
FFduDimension.Exposed := false;
Fields.Add(FFduDimension);
FFduKnot := TMFFloat.Create(Self, 'uKnot', []);
FFduKnot.Exposed := false;
Fields.Add(FFduKnot);
FFduOrder := TSFInt32.Create(Self, 'uOrder', 3);
FFduOrder.Exposed := false;
Fields.Add(FFduOrder);
FFdvDimension := TSFInt32.Create(Self, 'vDimension', 0);
FFdvDimension.Exposed := false;
Fields.Add(FFdvDimension);
FFdvKnot := TMFFloat.Create(Self, 'vKnot', []);
FFdvKnot.Exposed := false;
Fields.Add(FFdvKnot);
FFdvOrder := TSFInt32.Create(Self, 'vOrder', 3);
FFdvOrder.Exposed := false;
Fields.Add(FFdvOrder);
end;
class function TNurbsTextureSurfaceNode.ClassNodeTypeName: string;
begin
Result := 'NurbsTextureSurface';
end;
class function TNurbsTextureSurfaceNode.URNMatching(const URN: string): boolean;
begin
Result := (inherited URNMatching(URN)) or
(URN = URNVRML97Nodes + ClassNodeTypeName);
end;
procedure TTrimmedSurfaceNode.CreateNode;
begin
inherited;
FEventaddTrimmingContour := TX3DEvent.Create(Self, 'addTrimmingContour', TMFNode, true);
Events.Add(FEventaddTrimmingContour);
FEventremoveTrimmingContour := TX3DEvent.Create(Self, 'removeTrimmingContour', TMFNode, true);
Events.Add(FEventremoveTrimmingContour);
FFdtrimmingContour := TMFNode.Create(Self, 'trimmingContour', [TContour2DNode_2]);
FdtrimmingContour.ChangesAlways := [chGeometry];
Fields.Add(FFdtrimmingContour);
FFdsurface := TSFNode.Create(Self, 'surface', [TNurbsSurfaceNode]);
Fdsurface.ChangesAlways := [chGeometry];
Fields.Add(FFdsurface);
end;
class function TTrimmedSurfaceNode.ClassNodeTypeName: string;
begin
Result := 'TrimmedSurface';
end;
class function TTrimmedSurfaceNode.URNMatching(const URN: string): boolean;
begin
Result := (inherited URNMatching(URN)) or
(URN = URNVRML97Nodes + ClassNodeTypeName);
end;
{$define TGeometryNotImplemented := TTrimmedSurfaceNode}
GeometryNotImplemented
procedure TContour2DNode_2.CreateNode;
begin
inherited;
FEventAddChildren := TX3DEvent.Create(Self, 'addChildren', TMFNode, true);
Events.Add(FEventAddChildren);
FEventRemoveChildren := TX3DEvent.Create(Self, 'removeChildren', TMFNode, true);
Events.Add(FEventRemoveChildren);
FFdChildren := TMFNode.Create(Self, 'children', [TNurbsCurve2DNode, TContourPolyline2DNode,
{ In VRML 97 these are allowed children too: }
TPolyline2DNode, TContour2DNode_2 ]);
FdChildren.ChangesAlways := [chGeometry];
Fields.Add(FFdChildren);
DefaultContainerField := 'trimmingContour';
end;
class function TContour2DNode_2.ClassNodeTypeName: string;
begin
Result := 'Contour2D';
end;
class function TContour2DNode_2.URNMatching(const URN: string): boolean;
begin
Result := (inherited URNMatching(URN)) or
(URN = URNVRML97Nodes + ClassNodeTypeName);
end;
class function TContour2DNode_2.ForVRMLVersion(const Version: TX3DVersion): boolean;
begin
Result := Version.Major = 2;
end;
procedure TContour2DNode_2.DirectEnumerateActive(
Func: TEnumerateChildrenFunction);
begin
Fdchildren.EnumerateValid(Func);
end;
{$define TGeometryNotImplemented := TContour2DNode_2}
GeometryNotImplemented
procedure RegisterVRML97NodesNurbs;
begin
NodesManager.RegisterNodeClasses([
TCoordinateDeformerNode,
TNurbsCurveNode_2,
TNurbsGroupNode,
TNurbsPositionInterpolatorNode_2,
TNurbsSurfaceNode,
TNurbsTextureSurfaceNode,
TTrimmedSurfaceNode,
TContour2DNode_2
]);
end;
{$endif read_implementation}
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