X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=bundles%2Forg.simantics.scenegraph%2Fsrc%2Forg%2Fsimantics%2Fscenegraph%2Futils%2FMipMapBufferedImage.java;fp=bundles%2Forg.simantics.scenegraph%2Fsrc%2Forg%2Fsimantics%2Fscenegraph%2Futils%2FMipMapBufferedImage.java;h=10a8decb39bb7b63ca86d776251ce78f7917fd17;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git
diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/utils/MipMapBufferedImage.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/utils/MipMapBufferedImage.java
new file mode 100644
index 000000000..10a8decb3
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+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/utils/MipMapBufferedImage.java
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+/*******************************************************************************
+ * 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.Color;
+import java.awt.Graphics2D;
+import java.awt.Point;
+import java.awt.RenderingHints;
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Rectangle2D;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import com.kitfox.svg.SVGDiagram;
+
+/**
+ * Video-ram cache suitable for rasterized PaintableSymbols scalable vector graphics.
+ *
+ * This implementation rasterizes the same symbol from different mip map levels.
+ *
+ * @see VRamImage
+ * @author Toni Kalajainen
+ */
+public class MipMapBufferedImage extends BufferedImage {
+
+ /** Extra margin to the bounds reported by batik */
+ public static final double MARGIN_PERCENT = 3;
+
+ // Was 800 in VRam.. ?
+ public static final double MAX_DIMENSION = 600;
+ public static final double MIN_DIMENSION = 4;
+
+ //Shape outline;
+
+ Map rasters = new HashMap();
+ double[] resolutions;
+ double minResolution, maxResolution;
+
+ /**
+ * @param original
+ * @param imageBounds
+ * @param referenceSize
+ *
+ * FIXME: shouldn't be SVG dependent
+ */
+ public MipMapBufferedImage(SVGDiagram original, Rectangle2D imageBounds, Point referenceSize) {
+ super(original, imageBounds, referenceSize);
+ initializeRasters();
+ }
+
+ private void initializeRasters() {
+ List resolutions = new ArrayList();
+
+ if (referenceSize != null && !imageBounds.isEmpty()) {
+ // Init rasters - they are built on-demand
+ double maxResolution = maxResolution();
+ double minResolution = minResolution();
+ double fitResolution = fitResolution(referenceSize);
+ double resolution = fitResolution;
+ while (true) {
+ double next = resolution * 2;
+ if (next > maxResolution)
+ break;
+ resolution = next;
+ }
+ while (resolution > minResolution) {
+ IRaster r = createRaster(resolution);
+ rasters.put(resolution, r);
+ resolutions.add(resolution);
+ resolution /= 2;
+ }
+ } else {
+ // Init rasters - they are built on-demand
+ double maxResolution = maxResolution();
+ double minResolution = minResolution();
+ double resolution = maxResolution;
+ while (resolution > minResolution) {
+ IRaster r = createRaster(resolution);
+ rasters.put(resolution, r);
+ resolutions.add(resolution);
+ resolution /= 2;
+ }
+ }
+
+ // arraylist -> array
+ this.resolutions = new double[resolutions.size()];
+ for (int i=0; i=0) return resolutions[index];
+ index = -(index+1);
+
+ if (index>=resolutions.length) index = resolutions.length-1;
+ if (index<0) index = 0;
+ return resolutions[index];
+ }
+
+ @Override
+ public void paint(Graphics2D g) {
+ // Quality rendering requested, do not render from cache
+ //QualityHints.HIGH_QUALITY_HINTS.setQuality(g);
+ if (g.getRenderingHint(RenderingHints.KEY_RENDERING) == RenderingHints.VALUE_RENDER_QUALITY)
+ {
+ try {
+ source.render(g);
+ } catch (Exception e) {
+ // NOTE: Catching Exception instead of SVGException due to an
+ // NPE when encountering invalid color SVG definitions (e.g.
+ // rgb(256,-1,0))
+ e.printStackTrace();
+ }
+ return;
+ }
+
+ double requiredResolution = requiredResolution(g.getTransform());
+ // This scale makes the mipmapped painting use a mipmap that is smaller
+ // than the requested image pixel size in cases where the required
+ // resolution only slightly exceeds the size of an available mipmap.
+ requiredResolution *= 0.95;
+ //System.out.println("required resolution: " + requiredResolution);
+
+ if (requiredResolution > getRasterRenderingThresholdResolution()) {
+ Graphics2D g2d = (Graphics2D) g.create();
+ setupSourceRender(g2d);
+ try {
+ source.render(g2d);
+ } catch (Exception e) {
+ // NOTE: Catching Exception instead of SVGException due to an
+ // NPE when encountering invalid color SVG definitions (e.g.
+ // rgb(256,-1,0))
+ e.printStackTrace();
+ } finally {
+ g2d.dispose();
+ }
+ } else {
+ Object origInterpolationHint = g.getRenderingHint(RenderingHints.KEY_INTERPOLATION);
+ if (origInterpolationHint==null)
+ origInterpolationHint = RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR;
+
+ g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
+
+ double closestResolution = findClosestResolution(requiredResolution);
+ //System.out.println(" resolutions: " + Arrays.toString(resolutions));
+ //System.out.println(" closest resolution: " + closestResolution);
+ IRaster raster = rasters.get(closestResolution);
+ try {
+ raster.paint( g );
+ } finally {
+ g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, origInterpolationHint);
+ }
+ }
+ }
+
+ protected void setupSourceRender(Graphics2D g2d) {
+ g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_SPEED);
+ g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
+ g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
+ g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
+ g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
+ g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_DISABLE);
+ }
+
+ protected double getRasterRenderingThresholdResolution() {
+ return maxResolution;
+ }
+
+ @Override
+ public synchronized void releaseRaster() {
+ for (IRaster r : rasters.values())
+ r.release();
+ }
+
+ static interface IRaster extends Comparable {
+ double getResolution();
+ void paint(Graphics2D g);
+ void release();
+ }
+
+ static abstract class Raster implements IRaster {
+ protected final double resolution;
+
+ public Raster(double resolution) {
+ this.resolution = resolution;
+ }
+
+ public double getResolution() {
+ return resolution;
+ }
+
+ public int compareTo(IRaster o) {
+ double r = getResolution();
+ double or = o.getResolution();
+ if (or < r)
+ return -1;
+ if (or > r)
+ return 1;
+ return 0;
+ }
+ }
+
+ class BufferedRaster extends Raster {
+ java.awt.image.BufferedImage image;
+ //int widMargin, heiMargin;
+ int wid, hei;
+
+ BufferedRaster(double resolution) {
+ super(resolution);
+ double wid = imageBounds.getWidth();
+ double hei = imageBounds.getHeight();
+ this.wid = (int) (wid * resolution);
+ this.hei = (int) (hei * resolution);
+// widMargin = (int) (wid * resolution * (MARGIN_PERCENT/100)) +1;
+// heiMargin = (int) (hei * resolution * (MARGIN_PERCENT/100)) +1;
+ }
+
+ synchronized java.awt.image.BufferedImage getOrCreate()
+ {
+ if (image!=null) return image;
+ image = new java.awt.image.BufferedImage(
+ (wid+0*2+1),
+ (hei+0*2+1),
+ java.awt.image.BufferedImage.TYPE_INT_ARGB);
+
+ Graphics2D target = image.createGraphics();
+ target.setBackground(new Color(255,255,255,0));
+ target.clearRect(0, 0, image.getWidth(), image.getHeight());
+
+ target.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
+ target.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+ target.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
+ target.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
+
+// target.translate(widMargin, heiMargin);
+ target.scale(resolution, resolution);
+ target.translate(-imageBounds.getMinX(), -imageBounds.getMinY());
+ try {
+ source.render(target);
+ } catch (Exception e) {
+ // TODO Auto-generated catch block
+ // NOTE: Catching Exception instead of SVGException due to an
+ // NPE when encountering invalid color SVG definitions (e.g.
+ // rgb(256,-1,0))
+ e.printStackTrace();
+ }
+// source.paint(
+// new GraphicsContextImpl(target, new Rectangle2D.Double(0,0, image.getWidth(), image.getHeight()), null)
+// );
+ target.dispose();
+
+ return image;
+ }
+
+ public void paint(Graphics2D g) {
+ java.awt.image.BufferedImage image = getOrCreate();
+ if (image==null)
+ {
+ try {
+ source.render(g);
+ } catch (Exception e) {
+ // TODO Auto-generated catch block
+ // NOTE: Catching Exception instead of SVGException due to an
+ // NPE when encountering invalid color SVG definitions (e.g.
+ // rgb(256,-1,0))
+ e.printStackTrace();
+ }
+ return;
+ }
+ AffineTransform af = g.getTransform();
+ Object rh = g.getRenderingHint(RenderingHints.KEY_INTERPOLATION);
+ try {
+ /// Bicubic interpolation is very slow with opengl pipeline
+ if (rh == RenderingHints.VALUE_INTERPOLATION_BICUBIC)
+ g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
+ RenderingHints.VALUE_INTERPOLATION_BILINEAR);
+ g.translate(imageBounds.getMinX(), imageBounds.getMinY());
+ g.scale(1/resolution, 1/resolution);
+// g.translate(-widMargin, -heiMargin);
+ g.drawImage(image, 0, 0, null);
+ } finally {
+ g.setTransform(af);
+ g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, rh);
+ }
+ }
+
+ public void release() {
+ image = null;
+ }
+ }
+
+}