Importing release version 322 from old repos

2007-12-11 16:38:11 +00:00
parent 8cecdb016d
commit 7ae15be788
668 changed files with 109288 additions and 0 deletions
--- a/src/wsi/ra/diagram/ColorBarCalculator.java
+++ b/src/wsi/ra/diagram/ColorBarCalculator.java
@@ -0,0 +1,156 @@
+/**
+ *  Filename: $RCSfile: ColorBarCalculator.java,v $
+ *  Purpose:  Calculates the color values for a legend-style color bar.
+ *  Language: Java
+ *  Compiler: JDK 1.2
+ *  Authors:  Badreddin Abolmaali, Fred Rapp, Simon Wiest
+ *  Version:  $Revision: 1.1.1.1 $
+ *            $Date: 2003/07/03 14:59:41 $
+ *            $Author: ulmerh $
+ *  Copyright (c) Dept. Computer Architecture, University of Tuebingen, Germany
+ */
+
+package wsi.ra.diagram;
+
+/*============================================================================
+ * IMPORTS
+ *============================================================================*/
+
+import java.awt.*;
+import java.awt.geom.*;
+import java.awt.image.*;
+import javax.swing.*;
+
+import wsi.ra.math.*;
+
+/*============================================================================
+ * CLASS DECLARATION
+ *============================================================================*/
+
+/**
+ * Calculates the color values for a legend-style color bar.
+ */
+public class ColorBarCalculator
+{
+  /*--------------------------------------------------------------------------
+   * static public final member variables
+   *--------------------------------------------------------------------------*/
+
+  static public final int BLUE_TO_RED         = 0;
+  static public final int GREY_SCALE          = 1;
+  static public final int BLUE_SCALE          = 2;
+  static public final int ALL_COLORS          = 3;
+  // GREY_SCALE returns luminance values in [0.1;0.9], GREY_EXTENDED_SCALE in [0.0;1.0]
+  static public final int GREY_EXTENDED_SCALE = 4;
+
+  /*--------------------------------------------------------------------------
+   * private member variables
+   *--------------------------------------------------------------------------*/
+
+  private int color_scale = BLUE_TO_RED;
+  private boolean inverseScale = false;
+
+  /*--------------------------------------------------------------------------
+   * constructor
+   *--------------------------------------------------------------------------*/
+
+  public ColorBarCalculator(int color_scale)
+  {
+    this.color_scale = color_scale;
+  }
+
+  /*--------------------------------------------------------------------------
+   * public methods
+   *--------------------------------------------------------------------------*/
+
+  public void setColorScale(int color_scale) { this.color_scale = color_scale; }
+
+  /**
+   * Returns color for the given float-value, which must be in the range from 0 to 1.
+   * Warning: Creates new color object, better use the method 'getRGB' if possible.
+   */
+  public Color getColor(float value)
+  {
+    return new Color( getRGB(value) );
+  }
+
+  /**
+   * Returns color RGB-value for the given float-value, which must be in the range from 0 to 1.
+   */
+  public int getRGB(float value)
+  {
+    int rgbValue = 0;
+    if(inverseScale) {
+      value = 1 - value;
+    }
+    switch (color_scale)
+    {
+      case BLUE_TO_RED:
+        float hue = value * (value + value * 0.8F) / 2.65F - 1F;
+        rgbValue = Color.HSBtoRGB(hue, 0.6F, 1F);
+        break;
+
+      case GREY_SCALE:
+        rgbValue = Color.HSBtoRGB(0F, 0F, (value * 0.8F) + 0.1F);
+        break;
+
+      case BLUE_SCALE:
+        int rg = (int) (value * 0.95F * 256);
+        int b  = (int) ((value/2.0F + 0.45F) * 256);
+        rgbValue = rg * 0x10000 + rg * 0x100 + b;
+        break;
+
+      case ALL_COLORS:
+        rgbValue = Color.HSBtoRGB(value, 0.6F, 1F);
+        break;
+
+      case GREY_EXTENDED_SCALE:
+        rgbValue = Color.HSBtoRGB(0F, 0F, value );
+        break;
+    }
+    return rgbValue;
+  }
+
+  /**
+   * Reverts color scale (e.g. black will be white and vice versa).
+   * @param isInverse Color scale is inverted, if <code>isInverse</code> is set to true.
+   */
+  public void setInverseScale(boolean isInverse) {
+    inverseScale = isInverse;
+  }
+
+  /**
+   * Returns current scale mode.
+   * @return <code>true</code> if scale is inverted, else <code>false</code>.
+   */
+  public boolean isInverseScale() {
+   return inverseScale;
+  }
+
+  /*--------------------------------------------------------------------------
+   * static public methods
+   *--------------------------------------------------------------------------*/
+
+  /**
+   * Returns color for the given float-value, which must be in the range from 0 to 1.
+   * Warning: Creates new color object, better use the method 'getRGB' if possible.
+   */
+  static public Color getDefaultColor(float value)
+  {
+    return new Color( getDefaultRGB(value) );
+  }
+
+  /**
+   * Returns color RGB-value for the given float-value, which must be in the range from 0 to 1.
+   */
+  static public int getDefaultRGB(float value)
+  {
+    float hue = value * (value + value * 0.8F) / 2.65F - 1F;
+    return Color.HSBtoRGB(hue, 0.6F, 1F);
+  }
+}
+
+/****************************************************************************
+ * END OF FILE
+ ****************************************************************************/
+