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-- File: AIS_TexturedShape.cdl
-- Created: Mon Jul 2 11:32:59 2001
-- Author: Mathias BOSSHARD
-- <mbd@pomalox.paris1.matra-dtv.fr>
---Copyright: Matra Datavision 2001
class TexturedShape from AIS inherits Shape from AIS
---Purpose: This class allows to map textures on shapes
-- Textures are image files.
-- The texture itself is parametrized in (0,1)x(0,1).
-- Each face of a shape located in
-- UV space is provided with these parameters:
-- - Umin - starting position in U
-- - Umax - ending position in U
-- - Vmin - starting position in V
-- - Vmax - ending position in V
-- Each face is triangulated and a texel is assigned to each
-- node. Facets are then filled using a linear interpolation
-- of texture between each 'three texels'
-- User can act on :
-- - the number of occurences of the texture on the face
-- - the position of the origin of the texture
-- - the scale factor of the texture
uses
Pnt from gp,
Shape from TopoDS,
NameOfTexture2D from Graphic3d,
AspectFillArea3d from Graphic3d,
Texture2Dmanual from Graphic3d,
PresentationManager3d from PrsMgr,
Presentation from Prs3d,
AsciiString from TCollection
is
Create (shap: Shape from TopoDS)
returns mutable TexturedShape from AIS;
---Purpose: Initializes the textured shape ashape.
------------------------------------------------------------
SetTextureFileName( me: mutable;
TextureFileName: AsciiString from TCollection)
is virtual;
---Purpose : Sets the name of the texture file to map. The accepted
-- file types are those used in AlienImage with extensions
-- such as xwd, bmp, gif, rgb, ras, rs and more.
------------------------------------------------------------
SetTextureRepeat( me: mutable;
RepeatYN: Boolean from Standard;
URepeat: Real from Standard = 1.0;
VRepeat: Real from Standard = 1.0)
is virtual;
---Purpose : Sets the number of occurrences of
-- the texture on each face. The texture itself is parameterized
-- in (0,1) by (0,1) . Each face of the shape to be textured is
-- parameterized in UV space (Umin,Umax) by (Vmin,Vmax). If
-- RepeatYN is set to false, texture coordinates are clamped in the
-- range (0,1)x(0,1) of the face.
------------------------------------------------------------
SetTextureOrigin( me: mutable;
SetTextureOriginYN: Boolean from Standard;
UOrigin: Real from Standard = 0.0;
VOrigin: Real from Standard = 0.0)
is virtual;
---Purpose : Use this method to change the origin of the
-- texture. The texel (0,0) will be mapped to the
-- surfel (UOrigin,VOrigin)
------------------------------------------------------------
------------------------------------------------------------
SetTextureScale( me: mutable;
SetTextureScaleYN: Boolean from Standard;
ScaleU: Real from Standard = 1.0;
ScaleV: Real from Standard = 1.0)
is virtual;
---Purpose : Use this method to scale the texture (percent of
-- the face).
-- You can specify a scale factor for both U and V.
--
-- example : if you set ScaleU and ScaleV to 0.5 and
-- you enable texture repeat, the texture will appear
-- twice on the face in each direction.
------------------------------------------------------------
------------------------------------------------------------
ShowTriangles( me : mutable;
ShowTrianglesYN: Boolean from Standard = Standard_False)
is virtual;
---Purpose : Use this method to show the triangulation of
-- the shape. This is not very esthetic but can be
-- usefull for debug ...
------------------------------------------------------------
------------------------------------------------------------
SetTextureMapOn(me: mutable);
---Purpose : Enables texture mapping
------------------------------------------------------------
------------------------------------------------------------
SetTextureMapOff(me: mutable);
---Purpose : Disables texture mapping
------------------------------------------------------------
------------------------------------------------------------
EnableTextureModulate(me: mutable);
---Purpose : Enables texture modulation
------------------------------------------------------------
------------------------------------------------------------
DisableTextureModulate(me: mutable);
---Purpose : Disables texture modulation
------------------------------------------------------------
------------------------------------------------------------
UpdateAttributes(me: mutable);
---Purpose : Use this method to display the textured shape
-- without recomputing the whole presentation.
-- Use this method when ONLY the texture has been changed.
-- ie : myTShape->UpdateAttributes()
--
-- If other parameters (ie: scale factors,
-- texture origin, texture repeat ...) have changed,
-- the whole presentation has to be recomputed.
-- ie : if (myShape->DisplayMode() == 3)
-- myAISContext->RecomputePrsOnly(myShape);
-- else
-- {
-- myAISContext->SetDisplayMode(myShape,3,Standard_False);
-- myAISContext->Display(myShape, Standard_True);
-- }
------------------------------------------------------------
------------------------------------------------------------
Compute(me : mutable;
aPresentationManager : PresentationManager3d from PrsMgr;
aPresentation : mutable Presentation from Prs3d;
aMode : Integer from Standard = 0)
is redefined virtual protected;
------------------------------------------------------------
------------------------------------------------------------
TriangleIsValid(me;
P1: Pnt from gp;
P2: Pnt from gp;
P3: Pnt from gp)
returns Boolean from Standard is private;
------------------------------------------------------------
------------------------------------------------------------
--
-- QUERY METHODS
--
------------------------------------------------------------
TextureMapState(me) returns Boolean from Standard;
URepeat(me) returns Real from Standard;
TextureRepeat(me) returns Boolean from Standard;
Deflection(me) returns Real from Standard;
TextureFile(me) returns CString from Standard;
VRepeat(me) returns Real from Standard;
ShowTriangles(me) returns Boolean from Standard;
TextureUOrigin(me) returns Real from Standard;
TextureVOrigin(me) returns Real from Standard;
TextureScaleU(me) returns Real from Standard;
TextureScaleV(me) returns Real from Standard;
TextureScale(me) returns Boolean from Standard;
TextureOrigin(me) returns Boolean from Standard;
TextureModulate(me) returns Boolean from Standard;
fields
myPredefTexture : NameOfTexture2D from Graphic3d;
myTextureFile : AsciiString from TCollection;
DoRepeat : Boolean from Standard;
myURepeat : Real from Standard;
myVRepeat : Real from Standard;
DoMapTexture : Boolean from Standard;
DoSetTextureOrigin : Boolean from Standard;
myUOrigin : Real from Standard;
myVOrigin : Real from Standard;
DoSetTextureScale : Boolean from Standard;
myScaleU : Real from Standard;
myScaleV : Real from Standard;
DoShowTriangles : Boolean from Standard;
myDeflection : Real from Standard;
myAspect : AspectFillArea3d from Graphic3d;
mytexture : Texture2Dmanual from Graphic3d;
Umin : Real from Standard;
Umax : Real from Standard;
Vmin : Real from Standard;
Vmax : Real from Standard;
dUmax : Real from Standard;
dVmax : Real from Standard;
myModulate : Boolean from Standard;
end TexturedShape;
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