org.jcamp.math.LinearAxisMap Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jcamp-dx Show documentation

The JCAMP-DX project is the reference implemention of the IUPAC JCAMP-DX spectroscopy data standard.

There is a newer version: 0.9.2

package org.jcamp.math;

/**
 * direct linear mapping from data to axis
 * @author Thomas Weber
 */
public class LinearAxisMap extends AxisMap {
    /**
     * LinearAxisMap constructor comment.
     */
    public LinearAxisMap(IInterval1D data) {
        super(data);
    }
    /**
     * LinearAxisMap constructor comment.
     */
    public LinearAxisMap(IInterval1D data, Range1D fullViewRange) {
        super(data);
        setFullViewRange(fullViewRange);
        //	calcGrid();
    }
    /**
     * calc grid from zoom range.
     */
    protected void calcGrid() {
        double gridStep = alignTickStep(realZoomRange.getXWidth() / 5);
        double gridStart = Math.floor((realZoomRange.getXMin()) / gridStep) * gridStep;
        double gridEnd = Math.ceil((realZoomRange.getXMax()) / gridStep) * gridStep;
        grid = new LinearGrid1D(gridStart, gridEnd, gridStep);
        gridZoomRange.set(grid.coordinateAt(realZoomRange.getXMin()), grid.coordinateAt(realZoomRange.getXMax()));
    }
    /**
     * maps data grid to axis.
     * @return Grid1D
     * @param grid Grid1D
     */
    public Grid1D map(Grid1D grid) {
        if (grid instanceof LinearGrid1D)
            return new LinearGrid1D(
                map(((LinearGrid1D) grid).getStart()),
                map(((LinearGrid1D) grid).getEnd()),
                grid.getLength());
        else
            return super.map(grid);
    }
    /**
     * reverse maps data grid to axis.
     * @return Grid1D
     * @param grid Grid1D
     */
    public Grid1D reverseMap(Grid1D grid) {
        if (grid instanceof LinearGrid1D)
            return new LinearGrid1D(
                reverseMap(((LinearGrid1D) grid).getStart()),
                reverseMap(((LinearGrid1D) grid).getEnd()),
                grid.getLength());
        else
            return super.reverseMap(grid);
    }
}