Exemplo n.º 1
0
        public SvgRectF GetBounds()
        {
            var elemWidth  = this.Width;
            var elemHeight = this.Height;

            var isWidthInPerc  = elemWidth.BaseVal.UnitType == SvgLengthType.Percentage;
            var isHeightInPerc = elemHeight.BaseVal.UnitType == SvgLengthType.Percentage;

            SvgRectF bounds = new SvgRectF();

            if (isWidthInPerc || isHeightInPerc)
            {
                var viewRect = this.ViewBox.BaseVal;

                if (viewRect.Width > 0 && viewRect.Height > 0)
                {
                    bounds = new SvgRectF((float)viewRect.X, (float)viewRect.Y,
                                          (float)viewRect.Width, (float)viewRect.Height);
                }
                else
                {
                    bounds = SvgRectF.Empty;//TODO: Recursively computer the bounds?;
                }
            }
            if (bounds.Width.Equals(0.0) && bounds.Height.Equals(0.0))
            {
                return(SvgRectF.Empty);
            }

            double width, height;

            if (isWidthInPerc)
            {
                width = (bounds.Width + bounds.X) * elemWidth.BaseVal.ValueInSpecifiedUnits * 0.01;
            }
            else
            {
                width = elemWidth.BaseVal.Value;
            }
            if (isHeightInPerc)
            {
                height = (bounds.Height + bounds.Y) * elemHeight.BaseVal.ValueInSpecifiedUnits * 0.01;
            }
            else
            {
                height = elemHeight.BaseVal.Value;
            }

            bounds.Width  = (float)width;
            bounds.Height = (float)height;

            return(bounds);
        }
Exemplo n.º 2
0
        private void MapRectToRect(SvgRectF rect, SvgPointF[] plgpts)
        {
            SvgPointF pt1 = new SvgPointF(plgpts[1].X - plgpts[0].X,
                                          plgpts[1].Y - plgpts[0].Y);
            SvgPointF pt2 = new SvgPointF(plgpts[2].X - plgpts[0].X,
                                          plgpts[2].Y - plgpts[0].Y);

            this.m11 = pt1.X / rect.Width;
            this.m12 = pt1.Y / rect.Width;
            this.m21 = pt2.X / rect.Height;
            this.m22 = pt2.Y / rect.Height;
            this.dx  = plgpts[0].X - rect.X / rect.Width * pt1.X - rect.Y / rect.Height * pt2.X;
            this.dy  = plgpts[0].Y - rect.X / rect.Width * pt1.Y - rect.Y / rect.Height * pt2.Y;
        }
Exemplo n.º 3
0
        /// <summary>
        /// Initializes a new instance of the <see cref="SvgTransformF"/> class
        /// to the geometric transform defined by the specified rectangle and
        /// array of points.
        /// </summary>
        /// <param name="rect">
        /// A <see cref="SvgRectF"/> structure that represents the rectangle
        /// to be transformed.
        /// </param>
        /// <param name="plgpts">
        /// An array of three <see cref="SvgPointF"/> structures that represents the
        /// points of a parallelogram to which the upper-left, upper-right, and
        /// lower-left corners of the rectangle is to be transformed. The
        /// lower-right corner of the parallelogram is implied by the first three
        /// corners.
        /// </param>
        /// <exception cref="ArgumentNullException">
        /// If the <paramref name="plgpts"/> is <see langword="null"/>.
        /// </exception>
        /// <exception cref="ArgumentException">
        /// If the length of the <paramref name="plgpts"/> array is not equal
        /// to 3.
        /// </exception>
        /// <exception cref="ArgumentOutOfRangeException">
        /// If the width or height of the <paramref name="rect"/> is zero.
        /// </exception>
        public SvgTransformF(SvgRectF rect, SvgPointF[] plgpts)
        {
            if (plgpts == null)
            {
                throw new ArgumentNullException("plgpts");
            }
            if (plgpts.Length != 3)
            {
                throw new ArgumentException("plgpts");
            }

            if ((rect.Width == 0) || (rect.Height == 0))
            {
                throw new ArgumentOutOfRangeException("rect");
            }

            MapRectToRect(rect, plgpts);
        }
Exemplo n.º 4
0
        /// <summary>
        /// Initializes a new instance of the <see cref="SvgTransformF"/> class
        /// to the geometric transform defined by the specified rectangle and
        /// array of points.
        /// </summary>
        /// <param name="rect">
        /// A <see cref="SvgRectF"/> structure that represents the rectangle
        /// to be transformed.
        /// </param>
        /// <param name="plgpts">
        /// An array of three <see cref="SvgPointF"/> structures that represents the
        /// points of a parallelogram to which the upper-left, upper-right, and
        /// lower-left corners of the rectangle is to be transformed. The
        /// lower-right corner of the parallelogram is implied by the first three
        /// corners.
        /// </param>
        /// <exception cref="ArgumentNullException">
        /// If the <paramref name="plgpts"/> is <see langword="null"/>.
        /// </exception>
        /// <exception cref="ArgumentException">
        /// If the length of the <paramref name="plgpts"/> array is not equal
        /// to 3.
        /// </exception>
        /// <exception cref="ArgumentOutOfRangeException">
        /// If the width or height of the <paramref name="rect"/> is zero.
        /// </exception>
        public SvgTransformF(SvgRectF rect, SvgPointF[] plgpts)
        {
            if (plgpts == null)
            {
                throw new ArgumentNullException(nameof(plgpts));
            }
            if (plgpts.Length != 3)
            {
                throw new ArgumentException(nameof(plgpts));
            }

            if (rect.Width.Equals(0) || rect.Height.Equals(0))
            {
                throw new ArgumentOutOfRangeException(nameof(rect));
            }

            MapRectToRect(rect, plgpts);
        }