87 lines
2.8 KiB
Java
87 lines
2.8 KiB
Java
package eva2.tools.chart2d;
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/**
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* This interface is used by DPointSet to store values as images of integer
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* values which can be displayed in a DArea. All modifications of the values can
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* only be shown by the DArea, when the DPointSet.repaint method is
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* called. This should be done in the implementation of the #setImage and
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* #addImage method. To get the functionality of the DArea, the methods
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* #getMaxImageValue and #getMinImageValue are necessary.
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*/
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public interface DIntDoubleMap {
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/**
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* implementation should change the map in that way, that from now the
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* image of index is v
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*
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* @param source the preimage of the image
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* @param image the new image of the source value
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* @return <code>true<\code> when the minmal or the maximal image value
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* has been changed by this method call, else it returns
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* <code>false</code> @see #getMinImageValue(), #getMaxImageValue()
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*/
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boolean setImage(int source, double image);
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/**
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* implementation should return the image of source
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*
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* @param source the preimage
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* @return the image value
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*/
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double getImage(int source);
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/**
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* the image of the highest source value + 1 should be the given image value
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*
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* @param image the new image value
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* @return <code>true<\code> when the minmal or the maximal image value
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* has been changed by this method call, else it returns
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* <code>false</code> @see #getMinImageValue(), #getMaxImageValue()
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*/
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boolean addImage(double image);
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/**
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* implementation should return the number of source values
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*
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* @return the number of source values
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*/
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int getSize();
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/**
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* returns the maximal image value
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*
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* @return the maximal image value
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* @throw an IllegalArgumentException when it has no image values
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*/
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double getMaxImageValue();
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/**
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* returns the minimal image value
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*
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* @return the minmal image value
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* @throw an IllegalArgumentException when it has no image values
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*/
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double getMinImageValue();
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/**
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* returns the minimal image value
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*
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* @return the minmal image value
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* @throw an IllegalArgumentException when it has no image values
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*/
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double getMinPositiveImageValue();
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/**
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* checks the minimal and the maximal image values and returns <code>true</code>
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* when at least one of them has changed
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*
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* @return <code>true</code> when either the maximal image value or the
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* minmal image value has changed
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*/
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boolean restore();
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/**
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* method removes all image values and sets the size to 0
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*/
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void reset();
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} |