public void vec2FieldMagnitude(Field field, AffineTransform ftoi) { AffineTransform itof = null; try { itof = ftoi.createInverse(); } catch (NoninvertibleTransformException niv) { TDebug.println(0, "NoninvertibleTransformException: " + niv); } Vector3d v = new Vector3d(); Point2D.Double p = new Point2D.Double(); for (int j = 0, k = 0; j < height; ++j) for (int i = 0; i < width; ++i, ++k) { p.x = i; p.y = j; itof.transform(p, p); v = field.get(p.x, p.y, 0.0); f[k] = (float) Math.sqrt(v.x * v.x + v.y * v.y); } }
public void vec2FieldZero(Field field, AffineTransform ftoi) { AffineTransform itof = null; try { itof = ftoi.createInverse(); } catch (NoninvertibleTransformException niv) { TDebug.println(0, "NoninvertibleTransformException: " + niv); } Vector3d v = new Vector3d(); Point2D.Double p = new Point2D.Double(); for (int j = 0, k = 0; j < height; ++j) for (int i = 0; i < width; ++i, ++k) { p.x = i; p.y = j; itof.transform(p, p); v = field.get(p.x, p.y, 0.0); if ((v.x == 0.0) && (v.y == 0.0)) f[k] = 1.0f; else f[k] = 0.0f; } }
@Override public void restoreTransformTo(Object geometry) { Point2D.Double p = (Point2D.Double) geometry; origin.x = p.x; origin.y = p.y; }
protected void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2 = (Graphics2D) g; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); int w = getWidth(); int h = getHeight(); double xScale = (w - 2 * PAD) / (xMax - xMin); double yScale = (h - 2 * PAD) / (yMax - yMin); if (firstTime) System.out.printf("xScale = %.1f yScale = %.1f%n", xScale, yScale); Point2D.Double origin = new Point2D.Double(); // Axes origin. Point2D.Double offset = new Point2D.Double(); // Locate data. if (xMax < 0) { origin.x = w - PAD; offset.x = origin.x - xScale * xMax; } else if (xMin < 0) { origin.x = PAD - xScale * xMin; offset.x = origin.x; } else { origin.x = PAD; offset.x = PAD - xScale * xMin; } if (yMax < 0) { origin.y = h - PAD; offset.y = origin.y - yScale * yMax; } else if (yMin < 0) { origin.y = PAD - yScale * yMin; offset.y = origin.y; } else { origin.y = PAD; offset.y = PAD - yScale * yMin; } if (firstTime) { System.out.printf("origin = [%6.1f, %6.1f]%n", origin.x, origin.y); System.out.printf("offset = [%6.1f, %6.1f]%n", offset.x, offset.y); } // Draw abcissa. g2.draw(new Line2D.Double(PAD, origin.y, w - PAD, origin.y)); // Draw ordinate. g2.draw(new Line2D.Double(origin.x, PAD, origin.x, h - PAD)); g2.setPaint(Color.red); // Mark origin. g2.fill(new Ellipse2D.Double(origin.x - 2, origin.y - 2, 4, 4)); // Plot data. g2.setPaint(Color.blue); for (int i = 0; i < x.length; i++) { double x1 = offset.x + xScale * x[i]; double y1 = offset.y + yScale * y[i]; if (firstTime) System.out.printf("i = %d x1 = %6.1f y1 = %.1f%n", i, x1, y1); g2.fill(new Ellipse2D.Double(x1 - 2, y1 - 2, 4, 4)); g2.drawString(String.valueOf(i), (float) x1 + 3, (float) y1 - 3); } // Draw extreme data values. g2.setPaint(Color.black); Font font = g2.getFont(); FontRenderContext frc = g2.getFontRenderContext(); LineMetrics lm = font.getLineMetrics("0", frc); String s = String.format("%.1f", xMin); float width = (float) font.getStringBounds(s, frc).getWidth(); double x = offset.x + xScale * xMin; g2.drawString(s, (float) x, (float) origin.y + lm.getAscent()); s = String.format("%.1f", xMax); width = (float) font.getStringBounds(s, frc).getWidth(); x = offset.x + xScale * xMax; g2.drawString(s, (float) x - width, (float) origin.y + lm.getAscent()); s = String.format("%.1f", yMin); width = (float) font.getStringBounds(s, frc).getWidth(); double y = offset.y + yScale * yMin; g2.drawString(s, (float) origin.x + 1, (float) y + lm.getAscent()); s = String.format("%.1f", yMax); width = (float) font.getStringBounds(s, frc).getWidth(); y = offset.y + yScale * yMax; g2.drawString(s, (float) origin.x + 1, (float) y); if (firstTime) System.out.println("------------------------------"); firstTime = false; }
protected void updatePosition(double x, double y) { if (isValidPosition(x, y) == true) { _position.x = x; _position.y = y; } }