Exemple #1
0
        public static BoundingBox CalcBoundingBox(ElevationGrid elevationGrid)
        {
            BoundingBox bbox;
            int         xDim, zDim;

            xDim = elevationGrid._xDimension - 1;
            zDim = elevationGrid._zDimension - 1;

            bbox = new BoundingBox();

            bbox.Width  = xDim * elevationGrid._xSpacing;
            bbox.Height = elevationGrid.MaxHeight - elevationGrid.MinHeight;
            bbox.Depth  = zDim * elevationGrid._zSpacing;

            return(bbox);
        }
        public override void CollectGeometry(
            RenderingContext rc,
            out GeometryHandle handle,
            out BoundingBox bbox,
            out bool Coloring,
            out bool Texturing)
        {
            List <Vertex> geometry;


            handle = GeometryHandle.Zero;
            bbox   = BoundingBox.Zero;



            parentShape       = GetParent <Shape>();
            colorNode         = (Color)this.Children.FirstOrDefault(n => n.GetType() == typeof(Color));
            colorRGBANode     = (ColorRGBA)this.Children.FirstOrDefault(n => n.GetType() == typeof(ColorRGBA));
            texCoordinateNode = (TextureCoordinate)this.Children.FirstOrDefault(n => n.GetType() == typeof(TextureCoordinate));

            RGBA             = colorRGBANode != null;
            RGB              = colorNode != null;
            coloring         = RGBA || RGB;
            generateColorMap = coloring;

            texturing           = texCoordinateNode != null || parentShape.texturingEnabled;
            generateTexCoordMap = texturing;

            Coloring  = coloring;
            Texturing = texturing;

            if (RGB && !RGBA)
            {
                color = X3DTypeConverters.Floats(colorNode.color);
            }
            else if (RGBA && !RGB)
            {
                color = X3DTypeConverters.Floats(colorRGBANode.color);
            }

            _isLoaded = true;


            ////
            ////
            ////



            if (construct)
            {
                float sx = this.xSpacing;
                float sz = this.zSpacing;

                IConstructionSet      constructionSet;
                IPerlinNoiseGenerator perlinProvider;
                Bitmap largePerlinImage;

                constructionSet = SceneManager.GetCurrentConstructionSet();
                perlinProvider  = constructionSet.GetPerlinNoiseProvider();

                ElevationGrid generated = constructionSet.ElevationBuilder.BuildHeightmapFromGenerator(
                    rc,
                    perlinProvider,
                    out largePerlinImage, 40, 40, 20, 20, 20); // build a rather large height map

                largePerlinImage.Dispose();

                Color genColorNode = (Color)generated.Children.FirstOrDefault(n => n.GetType() == typeof(Color));
                this.RGB             = coloring = generateColorMap = true;
                this.height          = generated.height;
                this.color           = X3DTypeConverters.Floats(genColorNode.color);
                this.colorPerVertex  = generated.colorPerVertex;
                this.normalPerVertex = generated.normalPerVertex;
                this.Children        = generated.Children;
                this.xSpacing        = generated.xSpacing;
                this.zSpacing        = generated.zSpacing;
                this.xDimension      = generated.xDimension;
                this.zDimension      = generated.zDimension;
            }



            if (!this._isLoaded)
            {
                parentShape = GetParent <Shape>();

                texturing           = parentShape.texturingEnabled;
                generateTexCoordMap = texturing && texCoordinateNode == null;

                this._isLoaded = true;
            }


            height_mapping();

            bbox = BoundingBox.CalcBoundingBox(this);


            geometry = BuildElevationGeometryQuads(bbox);

            Buffering.BufferShaderGeometry(geometry, out handle.vbo4, out handle.NumVerticies4);
        }