-/*******************************************************************************\r
- * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
- * in Industry THTH ry.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- * VTT Technical Research Centre of Finland - initial API and implementation\r
- *******************************************************************************/\r
-package org.simantics.scenegraph.utils;\r
-\r
-import java.awt.geom.AffineTransform;\r
-import java.awt.geom.Point2D;\r
-import java.util.Arrays;\r
-\r
-/**\r
- * A set of utilities for calculating even spacings. Useful for grid/rules\r
- * spacing calculations.\r
- * \r
- * @author Tuukka Lehtonen\r
- * @author Marko Luukkainen (original)\r
- */\r
-public final class GridUtils {\r
-\r
- private static double gridLineEvenSpacings[] = new double[] { 1.0, 2.0, 5.0, 10.0 };\r
-\r
- /**\r
- * Returns next even grid spacing for value.\r
- * \r
- * @param value to round to nearest even grid spacing\r
- * @param gridSize the base grid size that will multiply the even spacings\r
- * returned by this method\r
- * @param lessThan <code>true</code> to select the nearest even spacing <=\r
- * value or <code>false</code> to select the nearest even spacing >=\r
- * value\r
- * @return the calculated nearest even grid spacing\r
- */\r
- public static double getEvenGridSpacing(double value, double gridSize, boolean lessThan) {\r
- double exp = Math.floor(Math.log10(value));\r
- double gs = Math.pow(10.0, exp) * gridSize;\r
-// System.out.println("getEvenGridSpacing(" + value + ", " + gridSize + ", " + lessThan + "): " + exp + ", " + gs);\r
- int i = lessThan ? 1 : 0;\r
- int max = lessThan ? gridLineEvenSpacings.length : gridLineEvenSpacings.length - 1;\r
- while (i < max) {\r
-// System.out.println("COMPARE(" + gridLineEvenSpacings[i] + "): " + gridLineEvenSpacings[i]*gs + " >= " + value);\r
- if (gridLineEvenSpacings[i] * gs >= value) {\r
- if (lessThan)\r
- --i;\r
- break;\r
- }\r
- i++;\r
- }\r
- // FIXME: this is a workaround to keep the next line from causing an NPE\r
- // Need to check the calculations and make some sense into this code once\r
- // again to be sure.\r
- if (i >= gridLineEvenSpacings.length)\r
- return 2 * gridLineEvenSpacings[gridLineEvenSpacings.length - 1] * gs;\r
- return gridLineEvenSpacings[i] * gs;\r
- }\r
-\r
- /**\r
- * Returns next even grid spacing for value with the assumed grid size of\r
- * <code>1.0</code>.\r
- * \r
- * @param value to round to nearest even grid spacing\r
- * @param lessThan <code>true</code> to select the nearest even spacing <=\r
- * value or <code>false</code> to select the nearest even spacing >=\r
- * value\r
- * @return the calculated nearest even grid spacing\r
- */\r
- public static double getEvenGridSpacing(double value, boolean lessThan) {\r
- return getEvenGridSpacing(value, 1.0, lessThan);\r
- }\r
-\r
- /**\r
- * Returns next even number for value and exponent of the value.\r
- * \r
- * @param value in units\r
- * @param array of at least two elements where the results will be put\r
- * @return the specified array, where even number is element [0] and\r
- * exponent is element [1]\r
- */\r
- public static double[] getEvenGridSpacingWithExp(double value, double[] array) {\r
- if (array == null)\r
- throw new NullPointerException("null array");\r
- if (array.length < 2)\r
- throw new NullPointerException("");\r
- \r
- /* TODO Time-Spacing \r
- 1s 5s 10s 20s 30s \r
- 1m 5m 10m 20m 30m \r
- 1h 2h 6h 12h \r
- */\r
-\r
- double sig = Math.signum( value );\r
- double exp = Math.floor(Math.log10( Math.abs(value) ));\r
- double gs = Math.pow(10.0, exp);\r
- int i = 0;\r
- while (i < gridLineEvenSpacings.length - 1) {\r
- if (gridLineEvenSpacings[i] * gs >= value) {\r
- break;\r
- }\r
- i++;\r
- }\r
- array[0] = gridLineEvenSpacings[i] * gs * sig;\r
- array[1] = exp;\r
- return array;\r
- }\r
-\r
- /**\r
- * Returns next even number for value and exponent of the value.\r
- * \r
- * @param value in units\r
- * @return array where even number is [0] element and exponent is [1]\r
- * element\r
- */\r
- public static double[] getEvenGridSpacingWithExp(double value) {\r
- return getEvenGridSpacingWithExp(value, new double[2]);\r
- }\r
-\r
- /**\r
- * @param fromCoord\r
- * @param gridSpacing\r
- * @return\r
- */\r
- public static double distanceToNextGridCoord(double fromCoord, double gridSpacing) {\r
- double mod = Math.IEEEremainder(fromCoord, gridSpacing);\r
- if (mod < 0) {\r
- return -mod;\r
- } else if (mod > 0) {\r
- return (gridSpacing - mod);\r
- }\r
- return 0;\r
- }\r
-\r
- /**\r
- * @param fromCoord\r
- * @param gridSpacing\r
- * @return\r
- */\r
- public static double distanceToPrevGridCoord(double fromCoord, double gridSpacing) {\r
- double mod = Math.IEEEremainder(fromCoord, gridSpacing);\r
- if (mod < 0) {\r
- return (gridSpacing + mod);\r
- } else if (mod > 0) {\r
- return mod;\r
- }\r
- return 0;\r
- }\r
- \r
- /**\r
- * @param coord\r
- * @param gridSpacing\r
- * @param scale\r
- * @return\r
- */\r
- public static double distanceToNextGridCoordScaled(double coord, double gridSpacing, double scale) {\r
- double result = distanceToNextGridCoord(coord, gridSpacing);\r
- return result * scale;\r
- }\r
-\r
- /**\r
- * @param coord\r
- * @param gridSpacing\r
- * @param scale\r
- * @return\r
- */\r
- public static double distanceToPrevGridCoordScaled(double coord, double gridSpacing, double scale) {\r
- double result = distanceToPrevGridCoord(coord, gridSpacing);\r
- return result * scale;\r
- }\r
- \r
- /**\r
- * @param coord\r
- * @param gridSpacing\r
- * @return\r
- */\r
- public static double distanceToNearestGridCoord(double coord, double gridSpacing) {\r
- double dist = GridUtils.distanceToNextGridCoord(coord, gridSpacing);\r
- if (dist > gridSpacing / 2)\r
- dist = dist - gridSpacing;\r
- return dist;\r
- }\r
-\r
- /**\r
- * @param tr\r
- * @param gridSpacing\r
- */\r
- public static void snapToGrid(AffineTransform tr, double gridSpacing) {\r
- double gdx = GridUtils.distanceToNearestGridCoord(tr.getTranslateX(), gridSpacing);\r
- double gdy = GridUtils.distanceToNearestGridCoord(tr.getTranslateY(), gridSpacing);\r
- //System.out.println("SNAP TO GRID: delta=(" + gdx + ", " + gdy + "), tr = " + tr);\r
- tr.translate(gdx, gdy);\r
- }\r
-\r
- /**\r
- * @param p\r
- * @param gridSpacing\r
- */\r
- public static void snapToGrid(Point2D p, double gridSpacing) {\r
- snapToGrid(p, gridSpacing, gridSpacing);\r
- }\r
-\r
- /**\r
- * @param p\r
- * @param gridXSpacing\r
- * @param gridYSpacing\r
- */\r
- public static void snapToGrid(Point2D p, double gridXSpacing, double gridYSpacing) {\r
- double x = p.getX();\r
- double y = p.getY();\r
- double gdx = GridUtils.distanceToNearestGridCoord(x, gridXSpacing);\r
- double gdy = GridUtils.distanceToNearestGridCoord(y, gridYSpacing);\r
- p.setLocation(x + gdx, y + gdy);\r
- }\r
-\r
- /**\r
- * @param t\r
- * @param gridSpacing\r
- * @return\r
- */\r
- public static double snapToGrid(double t, double gridSpacing) {\r
- double dt = GridUtils.distanceToNearestGridCoord(t, gridSpacing);\r
- return t + dt;\r
- }\r
-\r
- /**\r
- * Returns an even grid spacing where initialValue*scale <= limit.\r
- * \r
- * @param initialValue\r
- * @param scale\r
- * @param limit\r
- * @param gridSize\r
- * @param lessThan <code>true</code> to select the nearest even spacing <=\r
- * limit/scale or <code>false</code> to select the nearest even spacing >=\r
- * limit/scale\r
- * @return\r
- */\r
- public static double limitedEvenGridSpacing(double initialValue, double scale, double limit, double gridSize, boolean lessThan) {\r
- while (initialValue * scale > limit)\r
- initialValue /= 2;\r
- return getEvenGridSpacing(initialValue, gridSize, lessThan);\r
- }\r
-\r
- /**\r
- * Returns an even grid spacing where initialValue*scale <= limit\r
- * \r
- * @param initialValue\r
- * @param scale\r
- * @param limit\r
- * @param lessThan <code>true</code> to select the nearest even spacing <=\r
- * limit/scale or <code>false</code> to select the nearest even spacing >=\r
- * limit/scale\r
- * @return\r
- */\r
- public static double limitedEvenGridSpacing(double initialValue, double scale, double limit, boolean lessThan) {\r
- return limitedEvenGridSpacing(initialValue, scale, limit, 1.0, lessThan);\r
- }\r
-\r
- /**\r
- * A simple test for these routines.\r
- */\r
- public static void main(String[] args) {\r
- System.out.println(Arrays.toString(getEvenGridSpacingWithExp(15)));\r
- System.out.println(Arrays.toString(getEvenGridSpacingWithExp(16.3)));\r
- System.out.println(Arrays.toString(getEvenGridSpacingWithExp(143.41)));\r
- System.out.println(Arrays.toString(getEvenGridSpacingWithExp(500.0)));\r
- System.out.println(Arrays.toString(getEvenGridSpacingWithExp(10000.0)));\r
- System.out.println(Arrays.toString(getEvenGridSpacingWithExp(0.5)));\r
-\r
- //double aa[] = new double[2];\r
- System.out.println(getEvenGridSpacing(15, true));\r
- System.out.println(getEvenGridSpacing(15, false));\r
- System.out.println(getEvenGridSpacing(16.3, true));\r
- System.out.println(getEvenGridSpacing(16.3, false));\r
- System.out.println(getEvenGridSpacing(143.41, true));\r
- System.out.println(getEvenGridSpacing(143.41, false));\r
- System.out.println(getEvenGridSpacing(500.0, true));\r
- System.out.println(getEvenGridSpacing(500.0, false));\r
- System.out.println(getEvenGridSpacing(10000.0, true));\r
- System.out.println(getEvenGridSpacing(10000.0, false));\r
- System.out.println(getEvenGridSpacing(0.5, true));\r
- System.out.println(getEvenGridSpacing(0.5, false));\r
- System.out.println(getEvenGridSpacing(0.045, true));\r
- System.out.println(getEvenGridSpacing(0.045, false));\r
- System.out.println(getEvenGridSpacing(0.000605, true));\r
- System.out.println(getEvenGridSpacing(0.000605, false));\r
-\r
- System.out.println(getEvenGridSpacing(143, 2.54, true));\r
- System.out.println(getEvenGridSpacing(143, 2.54, false));\r
- }\r
-\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.scenegraph.utils;
+
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Point2D;
+import java.util.Arrays;
+
+/**
+ * A set of utilities for calculating even spacings. Useful for grid/rules
+ * spacing calculations.
+ *
+ * @author Tuukka Lehtonen
+ * @author Marko Luukkainen (original)
+ */
+public final class GridUtils {
+
+ private static double gridLineEvenSpacings[] = new double[] { 1.0, 2.0, 5.0, 10.0 };
+
+ /**
+ * Returns next even grid spacing for value.
+ *
+ * @param value to round to nearest even grid spacing
+ * @param gridSize the base grid size that will multiply the even spacings
+ * returned by this method
+ * @param lessThan <code>true</code> to select the nearest even spacing <=
+ * value or <code>false</code> to select the nearest even spacing >=
+ * value
+ * @return the calculated nearest even grid spacing
+ */
+ public static double getEvenGridSpacing(double value, double gridSize, boolean lessThan) {
+ double exp = Math.floor(Math.log10(value));
+ double gs = Math.pow(10.0, exp) * gridSize;
+// System.out.println("getEvenGridSpacing(" + value + ", " + gridSize + ", " + lessThan + "): " + exp + ", " + gs);
+ int i = lessThan ? 1 : 0;
+ int max = lessThan ? gridLineEvenSpacings.length : gridLineEvenSpacings.length - 1;
+ while (i < max) {
+// System.out.println("COMPARE(" + gridLineEvenSpacings[i] + "): " + gridLineEvenSpacings[i]*gs + " >= " + value);
+ if (gridLineEvenSpacings[i] * gs >= value) {
+ if (lessThan)
+ --i;
+ break;
+ }
+ i++;
+ }
+ // FIXME: this is a workaround to keep the next line from causing an NPE
+ // Need to check the calculations and make some sense into this code once
+ // again to be sure.
+ if (i >= gridLineEvenSpacings.length)
+ return 2 * gridLineEvenSpacings[gridLineEvenSpacings.length - 1] * gs;
+ return gridLineEvenSpacings[i] * gs;
+ }
+
+ /**
+ * Returns next even grid spacing for value with the assumed grid size of
+ * <code>1.0</code>.
+ *
+ * @param value to round to nearest even grid spacing
+ * @param lessThan <code>true</code> to select the nearest even spacing <=
+ * value or <code>false</code> to select the nearest even spacing >=
+ * value
+ * @return the calculated nearest even grid spacing
+ */
+ public static double getEvenGridSpacing(double value, boolean lessThan) {
+ return getEvenGridSpacing(value, 1.0, lessThan);
+ }
+
+ /**
+ * Returns next even number for value and exponent of the value.
+ *
+ * @param value in units
+ * @param array of at least two elements where the results will be put
+ * @return the specified array, where even number is element [0] and
+ * exponent is element [1]
+ */
+ public static double[] getEvenGridSpacingWithExp(double value, double[] array) {
+ if (array == null)
+ throw new NullPointerException("null array");
+ if (array.length < 2)
+ throw new NullPointerException("");
+
+ /* TODO Time-Spacing
+ 1s 5s 10s 20s 30s
+ 1m 5m 10m 20m 30m
+ 1h 2h 6h 12h
+ */
+
+ double sig = Math.signum( value );
+ double exp = Math.floor(Math.log10( Math.abs(value) ));
+ double gs = Math.pow(10.0, exp);
+ int i = 0;
+ while (i < gridLineEvenSpacings.length - 1) {
+ if (gridLineEvenSpacings[i] * gs >= value) {
+ break;
+ }
+ i++;
+ }
+ array[0] = gridLineEvenSpacings[i] * gs * sig;
+ array[1] = exp;
+ return array;
+ }
+
+ /**
+ * Returns next even number for value and exponent of the value.
+ *
+ * @param value in units
+ * @return array where even number is [0] element and exponent is [1]
+ * element
+ */
+ public static double[] getEvenGridSpacingWithExp(double value) {
+ return getEvenGridSpacingWithExp(value, new double[2]);
+ }
+
+ /**
+ * @param fromCoord
+ * @param gridSpacing
+ * @return
+ */
+ public static double distanceToNextGridCoord(double fromCoord, double gridSpacing) {
+ double mod = Math.IEEEremainder(fromCoord, gridSpacing);
+ if (mod < 0) {
+ return -mod;
+ } else if (mod > 0) {
+ return (gridSpacing - mod);
+ }
+ return 0;
+ }
+
+ /**
+ * @param fromCoord
+ * @param gridSpacing
+ * @return
+ */
+ public static double distanceToPrevGridCoord(double fromCoord, double gridSpacing) {
+ double mod = Math.IEEEremainder(fromCoord, gridSpacing);
+ if (mod < 0) {
+ return (gridSpacing + mod);
+ } else if (mod > 0) {
+ return mod;
+ }
+ return 0;
+ }
+
+ /**
+ * @param coord
+ * @param gridSpacing
+ * @param scale
+ * @return
+ */
+ public static double distanceToNextGridCoordScaled(double coord, double gridSpacing, double scale) {
+ double result = distanceToNextGridCoord(coord, gridSpacing);
+ return result * scale;
+ }
+
+ /**
+ * @param coord
+ * @param gridSpacing
+ * @param scale
+ * @return
+ */
+ public static double distanceToPrevGridCoordScaled(double coord, double gridSpacing, double scale) {
+ double result = distanceToPrevGridCoord(coord, gridSpacing);
+ return result * scale;
+ }
+
+ /**
+ * @param coord
+ * @param gridSpacing
+ * @return
+ */
+ public static double distanceToNearestGridCoord(double coord, double gridSpacing) {
+ double dist = GridUtils.distanceToNextGridCoord(coord, gridSpacing);
+ if (dist > gridSpacing / 2)
+ dist = dist - gridSpacing;
+ return dist;
+ }
+
+ /**
+ * @param tr
+ * @param gridSpacing
+ */
+ public static void snapToGrid(AffineTransform tr, double gridSpacing) {
+ double gdx = GridUtils.distanceToNearestGridCoord(tr.getTranslateX(), gridSpacing);
+ double gdy = GridUtils.distanceToNearestGridCoord(tr.getTranslateY(), gridSpacing);
+ //System.out.println("SNAP TO GRID: delta=(" + gdx + ", " + gdy + "), tr = " + tr);
+ tr.translate(gdx, gdy);
+ }
+
+ /**
+ * @param p
+ * @param gridSpacing
+ */
+ public static void snapToGrid(Point2D p, double gridSpacing) {
+ snapToGrid(p, gridSpacing, gridSpacing);
+ }
+
+ /**
+ * @param p
+ * @param gridXSpacing
+ * @param gridYSpacing
+ */
+ public static void snapToGrid(Point2D p, double gridXSpacing, double gridYSpacing) {
+ double x = p.getX();
+ double y = p.getY();
+ double gdx = GridUtils.distanceToNearestGridCoord(x, gridXSpacing);
+ double gdy = GridUtils.distanceToNearestGridCoord(y, gridYSpacing);
+ p.setLocation(x + gdx, y + gdy);
+ }
+
+ /**
+ * @param t
+ * @param gridSpacing
+ * @return
+ */
+ public static double snapToGrid(double t, double gridSpacing) {
+ double dt = GridUtils.distanceToNearestGridCoord(t, gridSpacing);
+ return t + dt;
+ }
+
+ /**
+ * Returns an even grid spacing where initialValue*scale <= limit.
+ *
+ * @param initialValue
+ * @param scale
+ * @param limit
+ * @param gridSize
+ * @param lessThan <code>true</code> to select the nearest even spacing <=
+ * limit/scale or <code>false</code> to select the nearest even spacing >=
+ * limit/scale
+ * @return
+ */
+ public static double limitedEvenGridSpacing(double initialValue, double scale, double limit, double gridSize, boolean lessThan) {
+ while (initialValue * scale > limit)
+ initialValue /= 2;
+ return getEvenGridSpacing(initialValue, gridSize, lessThan);
+ }
+
+ /**
+ * Returns an even grid spacing where initialValue*scale <= limit
+ *
+ * @param initialValue
+ * @param scale
+ * @param limit
+ * @param lessThan <code>true</code> to select the nearest even spacing <=
+ * limit/scale or <code>false</code> to select the nearest even spacing >=
+ * limit/scale
+ * @return
+ */
+ public static double limitedEvenGridSpacing(double initialValue, double scale, double limit, boolean lessThan) {
+ return limitedEvenGridSpacing(initialValue, scale, limit, 1.0, lessThan);
+ }
+
+ /**
+ * A simple test for these routines.
+ */
+ public static void main(String[] args) {
+ System.out.println(Arrays.toString(getEvenGridSpacingWithExp(15)));
+ System.out.println(Arrays.toString(getEvenGridSpacingWithExp(16.3)));
+ System.out.println(Arrays.toString(getEvenGridSpacingWithExp(143.41)));
+ System.out.println(Arrays.toString(getEvenGridSpacingWithExp(500.0)));
+ System.out.println(Arrays.toString(getEvenGridSpacingWithExp(10000.0)));
+ System.out.println(Arrays.toString(getEvenGridSpacingWithExp(0.5)));
+
+ //double aa[] = new double[2];
+ System.out.println(getEvenGridSpacing(15, true));
+ System.out.println(getEvenGridSpacing(15, false));
+ System.out.println(getEvenGridSpacing(16.3, true));
+ System.out.println(getEvenGridSpacing(16.3, false));
+ System.out.println(getEvenGridSpacing(143.41, true));
+ System.out.println(getEvenGridSpacing(143.41, false));
+ System.out.println(getEvenGridSpacing(500.0, true));
+ System.out.println(getEvenGridSpacing(500.0, false));
+ System.out.println(getEvenGridSpacing(10000.0, true));
+ System.out.println(getEvenGridSpacing(10000.0, false));
+ System.out.println(getEvenGridSpacing(0.5, true));
+ System.out.println(getEvenGridSpacing(0.5, false));
+ System.out.println(getEvenGridSpacing(0.045, true));
+ System.out.println(getEvenGridSpacing(0.045, false));
+ System.out.println(getEvenGridSpacing(0.000605, true));
+ System.out.println(getEvenGridSpacing(0.000605, false));
+
+ System.out.println(getEvenGridSpacing(143, 2.54, true));
+ System.out.println(getEvenGridSpacing(143, 2.54, false));
+ }
+
}
\ No newline at end of file
Code Review / simantics / platform.git / blobdiff