Examples of javax.media.j3d.TexCoordGeneration

javax.media.j3d.TexCoordGeneration
The TexCoordGeneration object contains all parameters needed for automatic texture coordinate generation. It is included as part of an Appearance component object.
Texture coordinates determine which texel in the texture map is assigned to a given vertex. Texture coordinates are interpolated between vertices, similarly to how colors are interpolated between two vertices of lines and polygons.
Texture coordinates consist of two, three or four coordinates. These coordinates are referred to as the S, T, R, and Q coordinates. 2D textures use the S and T coordinates. 3D textures use the S, T and R coordinates. The Q coordinate, similar to the w coordinate of the (x, y, z, w) object coordinates, is used to create homogeneous coordinates.
Rather than the programmer having to explicitly assign texture coordinates, Java 3D can automatically generate the texture coordinates to achieve texture mapping onto contours. The TexCoordGeneration attributes specify the functions for automatically generating texture coordinates. The texture attributes that can be defined are:
- Texture format - defines whether the generated texture coordinates are 2D, 3D, or 4D:
  - TEXTURE_COORDINATE_2 - generates 2D texture coordinates (S and T).
  - TEXTURE_COORDINATE_3 - generates 3D texture coordinates (S, T, and R).
  - TEXTURE_COORDINATE_4 - generates 4D texture coordinates (S, T, R, and Q).
- Texture generation mode - defines how the texture coordinates are generated:
  - OBJECT_LINEAR - texture coordinates are generated as a linear function in object coordinates. The function used is:
  - EYE_LINEAR - texture coordinates are generated as a linear function in eye coordinates. The function used is:
  - SPHERE_MAP - texture coordinates are generated using spherical reflection mapping in eye coordinates. Used to simulate the reflected image of a spherical environment onto a polygon.
  - NORMAL_MAP - texture coordinates are generated to match vertices' normals in eye coordinates. This is only available if TextureCubeMap is available.
  - REFLECTION_MAP - texture coordinates are generated to match vertices' reflection vectors in eye coordinates. This is only available if TextureCubeMap is available.
- Plane equation coefficients - defines the coefficients for the plane equations used to generate the coordinates in the OBJECT_LINEAR and EYE_LINEAR texture generation modes. The coefficients define a reference plane in either object coordinates or in eye coordinates, depending on the texture generation mode.
  The equation coefficients are set by the setPlaneS, setPlaneT, setPlaneR, and setPlaneQ methods for each of the S, T, R, and Q coordinate functions, respectively. By default the equation coefficients are set as follows:
Texture coordinate generation is enabled or disabled by the setEnable method. When enabled, the specified texture coordinate is computed according to the generating function associated with the coordinate. When disabled, subsequent vertices take the specified texture coordinate from the current set of texture coordinates.
@see Canvas3D#queryProperties

            appearance = (Appearance)appearance.cloneNodeComponent(false);
            // Create texture coordinates if geometry doesn't define its own coordinates 
            // and appearance contains a texture 
            if (!firstGeometryHasTextureCoordinateIndices
                && appearance.getTexture() != null) {
              appearance.setTexCoordGeneration(new TexCoordGeneration());
            }
          }
          Shape3D shape = new Shape3D(geometryArray, appearance);   
          sceneRoot.addChild(shape);
          scene.addNamedObject(group.getName() + (i == 0 ? "" : String.valueOf(i)), shape);

View Full Code Here

        objectName += String.valueOf(this.shapeIndex++);
        
        // Start a new object at OBJ format 
        this.out.write("g " + objectName + "\n");
        
        TexCoordGeneration texCoordGeneration = null;
        if (this.mtlFileName != null) {
          if (appearance != null) {
            texCoordGeneration = appearance.getTexCoordGeneration();
            ComparableAppearance comparableAppearance = new ComparableAppearance(appearance);
            String appearanceName = this.appearances.get(comparableAppearance);

View Full Code Here

            appearance.setTextureAttributes(defaultMaterialAndTexture.getTextureAttributes());
            appearance.setTexture(null);
          } else if (color == null && texture != null) {
            // Change material to white then texture
            appearance.setMaterial(getMaterial(DEFAULT_COLOR, DEFAULT_AMBIENT_COLOR, materialShininess));
            TexCoordGeneration texCoordGeneration = new TexCoordGeneration(TexCoordGeneration.OBJECT_LINEAR,
                TexCoordGeneration.TEXTURE_COORDINATE_2,
                new Vector4f(-pieceSize.x / modelSize.x / texture.getWidth(), 0, 0, 0), 
                new Vector4f(0, pieceSize.y / modelSize.y / texture.getHeight(), pieceSize.z / modelSize.z / texture.getHeight(), 0));
            appearance.setTexCoordGeneration(texCoordGeneration);
            appearance.setTextureAttributes(MODULATE_TEXTURE_ATTRIBUTES);

View Full Code Here

    textureAttr.setTextureMode(TextureAttributes.REPLACE);
    textureApp.setTextureAttributes(textureAttr);
    Material mat = new Material();
    mat.setShininess(120.0f);
    textureApp.setMaterial(mat);
    TexCoordGeneration tcg = new TexCoordGeneration(TexCoordGeneration.OBJECT_LINEAR,
                                                    TexCoordGeneration.TEXTURE_COORDINATE_2);


    textureApp.setTexCoordGeneration(tcg);

View Full Code Here

/* 141 */       if (p.t != null) {
/* 142 */         a.setTexture(p.t);
/*     */ 
/* 144 */         if ((((GeometryArray)shape.getGeometry()).getVertexFormat() & 0x20) == 0)
/*     */         {
/* 146 */           TexCoordGeneration tcg = new TexCoordGeneration();
/* 147 */           a.setTexCoordGeneration(tcg);
/*     */         }
/*     */       }
/*     */ 
/* 151 */       if (p.transparent) {

View Full Code Here

/* 54 */     super(symbol, control);
/*    */   }
/*    */ 
/*    */   public void writeObject(DataOutput out) throws IOException {
/* 58 */     super.writeObject(out);
/* 59 */     TexCoordGeneration attr = (TexCoordGeneration)this.node;
/* 60 */     Vector4f vec = new Vector4f();
/* 61 */     out.writeBoolean(attr.getEnable());
/* 62 */     out.writeInt(attr.getFormat());
/* 63 */     out.writeInt(attr.getGenMode());
/* 64 */     attr.getPlaneR(vec);
/* 65 */     this.control.writeVector4f(out, vec);
/* 66 */     attr.getPlaneS(vec);
/* 67 */     this.control.writeVector4f(out, vec);
/* 68 */     attr.getPlaneT(vec);
/* 69 */     this.control.writeVector4f(out, vec);
/* 70 */     attr.getPlaneQ(vec);
/* 71 */     this.control.writeVector4f(out, vec);
/*    */   }

View Full Code Here

/* 71 */     this.control.writeVector4f(out, vec);
/*    */   }
/*    */ 
/*    */   public void readObject(DataInput in) throws IOException {
/* 75 */     super.readObject(in);
/* 76 */     TexCoordGeneration attr = (TexCoordGeneration)this.node;
/* 77 */     attr.setEnable(in.readBoolean());
/* 78 */     attr.setFormat(in.readInt());
/* 79 */     attr.setGenMode(in.readInt());
/* 80 */     attr.setPlaneR(this.control.readVector4f(in));
/* 81 */     attr.setPlaneS(this.control.readVector4f(in));
/* 82 */     attr.setPlaneT(this.control.readVector4f(in));
/* 83 */     attr.setPlaneQ(this.control.readVector4f(in));
/*    */   }

View Full Code Here

/* 82 */     attr.setPlaneT(this.control.readVector4f(in));
/* 83 */     attr.setPlaneQ(this.control.readVector4f(in));
/*    */   }
/*    */ 
/*    */   protected SceneGraphObject createNode() {
/* 87 */     return new TexCoordGeneration();
/*    */   }

View Full Code Here

TOP

Related Classes of javax.media.j3d.TexCoordGeneration

com.eteks.sweethome3d.j3d.HomePieceOfFurniture3D

com.eteks.sweethome3d.j3d.OBJLoader

com.eteks.sweethome3d.j3d.OBJWriter

com.eteks.sweethome3d.j3d.PhotoRenderer

com.sun.j3d.loaders.objectfile.ObjectFileMaterials

com.sun.j3d.utils.scenegraph.io.state.javax.media.j3d.TexCoordGenerationState

eas.miscellaneous.java3D.TextureExample

javax.vecmath.Vector4f

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.