Class ViewportPolicy

    • Constructor Detail

      • ViewportPolicy

        public ViewportPolicy()
    • Method Detail

      • fitToSize

        public void fitToSize()
        Centers the contents within the viewport and zooms the viewport so that the contents are fully visible.
      • fitToSize

        public void fitToSize​(double zoomMin)
        Centers the contents within the viewport and zooms the viewport so that the contents are fully visible (if possible given the specified zoom factor range).
        Parameters:
        zoomMin - The minimum zoom factor.
      • fitToSize

        public void fitToSize​(double zoomMin,
                              double zoomMax)
        Centers the contents within the viewport and zooms the viewport so that the contents are fully visible (if possible given the specified zoom factor range).
        Parameters:
        zoomMin - The minimum zoom factor.
        zoomMax - The maximum zoom factor.
      • scroll

        public void scroll​(boolean concatenate,
                           double deltaTranslateX,
                           double deltaTranslateY)
        Advances the viewport transformation by the given translation values.
        Parameters:
        concatenate - true to concatenate the specified zoom to the current transformation, false to not concatenate the specified scroll to the current but to the initial transformation.
        deltaTranslateX - The horizontal translation delta.
        deltaTranslateY - The vertical translation delta.
      • setScroll

        public void setScroll​(double tx,
                              double ty)
        Sets the x and y translation of the viewport to the given values. Does not alter scaling.
        Parameters:
        tx - The new x translation.
        ty - The new y translation.
      • setZoom

        public void setZoom​(double zoom)
        Sets the x and y scaling of the viewport to the given zoom factor. Does not alter translation/scroll-offset.
        Parameters:
        zoom - The new x and y scaling for the viewport.
      • zoom

        public void zoom​(boolean concatenate,
                         boolean discretize,
                         double relativeZoom,
                         double sceneX,
                         double sceneY)
        Concatenates a scaling transformation to the current viewport transformation.
        Parameters:
        concatenate - true to concatenate the specified zoom to the current transformation, false to not concatenate the specified zoom to the current but to the initial transformation.
        discretize - true to discretize the resulting zoom level, i.e. round it to 6 decimal places and do not skip integer zoom levels, false to not change the resulting zoom level.
        relativeZoom - The scale factor.
        sceneX - The pivot x-coordinate.
        sceneY - The pivot y-coordinate.