public void draw(Graphics g) {
animate();
g.setColor(Color.black);
g.fillRect(0, 0, dim.width, dim.height);
g.setColor(Color.white);
numpaint++;
DebugPrinter dbg = new DebugPrinter(g, 50, 60);
dbg.print(
"Spring-mass demo by yigal irani, drag balls or create new ones by clicking inside box");
dbg.print("frame", numpaint);
dbg.print("fps", 1 / timer.time_diff);
Point top_left = point_by_vec(new Vec(-1, 1));
g.draw3DRect(top_left.x, top_left.y, screen_dist(2), screen_dist(2), true);
for (int i = 0; i < springs.size(); i++) {
Spring spring = springs.get2(i);
Point p1 = point_by_vec(balls.get2(spring.start).pos);
Point p2 = point_by_vec(balls.get2(spring.end).pos);
g.drawLine(p1.x, p1.y, p2.x, p2.y);
}
for (int i = 0; i < balls.size(); i++) {
Ball ball = balls.get2(i);
Point p = point_by_vec(ball.pos);
int screen_radius = screen_dist(RADIUS);
g.setColor(Color.blue);
g.fillOval(p.x - screen_radius, p.y - screen_radius, screen_radius * 2, screen_radius * 2);
g.setColor(Color.white);
g.drawOval(p.x - screen_radius, p.y - screen_radius, screen_radius * 2, screen_radius * 2);
g.drawString("" + i, p.x, p.y);
}
}
public void label(Graphics g, String var, double m, String units, int adj) {
g.setColor(Color.black);
g.setFont(font);
String s = format.format(m);
g.drawString(var + ": " + s, x + 5, y + h / 2 - 5);
g.drawString(units, x + w - adj, y + h / 2 - 5);
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
if (model != null) {
newImgBuf(); // refresh the image buffer if necessary
// compute the real-to-screen ratio, this variable differs
// from model.real2Screen by zoomScale
Dimension sz = getSize();
double real2Screen0 = model.getScaleFromSpan(realSpan, sz.width, sz.height);
model.setMatrix(viewMatrix, real2Screen0 * zoomScale, sz.width / 2, sz.height / 2);
imgG.setColor(Color.BLACK);
imgG.fillRect(0, 0, sz.width, sz.height);
model.paint(imgG);
g.drawImage(img, 0, 0, this);
}
}
void drawLine(Graphics g, DrawObject L) {
if (L == null) {
return;
}
if ((sequencingOn) && (L.sequenceNum != currentSequenceNumDisplay)) {
return;
}
Graphics2D g2 = (Graphics2D) g;
g2.setStroke(L.drawStroke);
int x1 = (int) ((L.x - minX) / (maxX - minX) * (D.width - 2 * inset));
int y1 = (int) ((L.y - minY) / (maxY - minY) * (D.height - 2.0 * inset));
int x2 = (int) ((L.x2 - minX) / (maxX - minX) * (D.width - 2 * inset));
int y2 = (int) ((L.y2 - minY) / (maxY - minY) * (D.height - 2.0 * inset));
if (L.isArrow) {
drawArrow(
(Graphics2D) g,
inset + x1,
D.height - y1 - inset,
inset + x2,
D.height - y2 - inset,
1.0f,
L.drawStroke);
} else {
g.drawLine(inset + x1, D.height - y1 - inset, inset + x2, D.height - y2 - inset);
}
}
public static void drawLine(Graphics g, int x1, int y1, int x2, int y2, int lineWidth) {
if (lineWidth == 1) g.drawLine(x1, y1, x2, y2);
else {
double angle;
double halfWidth = ((double) lineWidth) / 2.0;
double deltaX = (double) (x2 - x1);
double deltaY = (double) (y2 - y1);
if (x1 == x2) angle = Math.PI;
else angle = Math.atan(deltaY / deltaX) + Math.PI / 2;
int xOffset = (int) (halfWidth * Math.cos(angle));
int yOffset = (int) (halfWidth * Math.sin(angle));
int[] xCorners = {x1 - xOffset, x2 - xOffset + 1, x2 + xOffset + 1, x1 + xOffset};
int[] yCorners = {y1 - yOffset, y2 - yOffset, y2 + yOffset + 1, y1 + yOffset + 1};
g.fillPolygon(xCorners, yCorners, 4);
}
}
public static void drawArrow(Graphics g, int x1, int y1, int x2, int y2, int lineWidth) {
// Draw line using user defined drawline() which can specify line width
drawLine(g, x1, y1, x2, y2, lineWidth);
// Calculate x-y values for arrow head
calcValues(x1, y1, x2, y2);
g.fillPolygon(xValues, yValues, 3);
}
void drawPoint(Graphics g, DrawObject p) {
if (p == null) {
return;
}
if ((sequencingOn) && (p.sequenceNum != currentSequenceNumDisplay)) {
return;
}
int x = (int) ((p.x - minX) / (maxX - minX) * (D.width - 2 * inset));
int y = (int) ((p.y - minY) / (maxY - minY) * (D.height - 2.0 * inset));
if (p.diameter > 1) {
int r = p.diameter / 2;
g.fillOval(inset + x - r, D.height - y - inset - r, 2 * r, 2 * r);
} else {
g.fillRect(inset + x, D.height - y - inset, 1, 1);
}
}
/** This internal method begins a new line */
protected void newline() {
charnum = 0; // Reset character number to 0
linenum++; // Increment line number
if (linenum >= lines_per_page) { // If we've reached the end of the page
page.dispose(); // send page to printer
page = null; // but don't start a new page yet.
}
}
void drawLabel(Graphics g, DrawObject L) {
if ((sequencingOn) && (L.sequenceNum != currentSequenceNumDisplay)) {
return;
}
int x = (int) ((L.x - minX) / (maxX - minX) * (D.width - 2 * inset));
int y = (int) ((L.y - minY) / (maxY - minY) * (D.height - 2.0 * inset));
g.drawString(L.str, inset + x, D.height - y - inset);
}
/**
* Draw a ball at screen coordinate (x, y) with a ball index `id' (0, 0) represents the top-left
* corner `x', `y', `radius' are given in pixels the ball index (gray code) `id' can be 0 to 15
*/
void paint(Graphics gc, int x, int y, int id, double radius) {
if (balls == null) makeBalls();
Image img = balls[id]; // id = [0..15]
int size = (int) (radius * 2 + .5);
gc.drawImage(img, x - size / 2, y - size / 2, size, size, null);
// System.out.println("" + x + " " + y + " " + id + " " + radius);
}
void drawImage(Graphics g, DrawObject I) {
if ((sequencingOn) && (I.sequenceNum != currentSequenceNumDisplay)) {
return;
}
for (int i = 0; i < I.pixels.length; i++) {
for (int j = 0; j < I.pixels[i].length; j++) {
Color c = new Color(I.pixels[i][j][1], I.pixels[i][j][2], I.pixels[i][j][3]);
g.setColor(c);
// Note: i starts at the top row of the image.
int x = j; // x along the x-axis is the column coord of pixels
int y = I.pixels[i].length - i;
int x1 = (int) ((x - minX) / (maxX - minX) * (D.width - 2 * inset));
int y1 = (int) ((y - minY) / (maxY - minY) * (D.height - 2.0 * inset));
int x2 = (int) ((x + 1 - minX) / (maxX - minX) * (D.width - 2 * inset));
int y2 = (int) ((y - 1 - minY) / (maxY - minY) * (D.height - 2.0 * inset));
g.fillRect(inset + x1, D.height - y1 - inset, x2 - x1, y1 - y2);
}
}
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
if (resourceImage != null) {
g.drawImage(resourceImage, 1, 1, this);
}
}
/**
* Prepare a buffer for the image, return if the canvas is ready Only need to call this when the
* size of the canvas is changed, Since we automatically detect the size change in paint() only
* call this on start
*/
public boolean newImgBuf() {
Dimension sz = getSize();
if (sz.width == 0 || sz.height == 0) return false;
// quit if the current image already has the right size
if (img != null && imgG != null && sz.equals(imgSize)) return true;
img = createImage(sz.width, sz.height);
if (imgG != null) imgG.dispose();
imgG = img.getGraphics();
imgSize = sz;
return true;
}
void drawOvalOrRectangle(Graphics g, DrawObject R, boolean isRect) {
if (R == null) {
return;
}
if ((sequencingOn) && (R.sequenceNum != currentSequenceNumDisplay)) {
return;
}
Graphics2D g2 = (Graphics2D) g;
g2.setStroke(R.drawStroke);
int x1 = (int) ((R.x - minX) / (maxX - minX) * (D.width - 2 * inset));
int y1 = (int) ((R.y - minY) / (maxY - minY) * (D.height - 2.0 * inset));
double x = R.x + R.width;
double y = R.y - R.height;
int x2 = (int) ((x - minX) / (maxX - minX) * (D.width - 2 * inset));
int y2 = (int) ((y - minY) / (maxY - minY) * (D.height - 2.0 * inset));
if (isRect) {
g.drawRect(inset + x1, D.height - y1 - inset, x2 - x1, y1 - y2);
} else {
g.drawOval(inset + x1, D.height - y1 - inset, x2 - x1, y1 - y2);
}
}
/**
* Set the font style. The argument should be one of the font style constants defined by the
* java.awt.Font class. All subsequent output will be in that style. This method relies on all
* styles of the Monospaced font having the same metrics.
*/
public void setFontStyle(int style) {
synchronized (this.lock) {
// Try to set a new font, but restore current one if it fails
Font current = font;
try {
font = new Font("Monospaced", style, fontsize);
} catch (Exception e) {
font = current;
}
// If a page is pending, set the new font. Otherwise newpage() will.
if (page != null) page.setFont(font);
}
}
/**
* Paint the glyphs for the given view. This is implemented to only render if the Graphics is of
* type Graphics2D which is required by TextLayout (and this should be the case if running on the
* JDK).
*/
public void paint(GlyphView v, Graphics g, Shape a, int p0, int p1) {
if (g instanceof Graphics2D) {
Rectangle2D alloc = a.getBounds2D();
Graphics2D g2d = (Graphics2D) g;
float y = (float) alloc.getY() + layout.getAscent() + layout.getLeading();
float x = (float) alloc.getX();
if (p0 > v.getStartOffset() || p1 < v.getEndOffset()) {
try {
// TextLayout can't render only part of it's range, so if a
// partial range is required, add a clip region.
Shape s = v.modelToView(p0, Position.Bias.Forward, p1, Position.Bias.Backward, a);
Shape savedClip = g.getClip();
g2d.clip(s);
layout.draw(g2d, x, y);
g.setClip(savedClip);
} catch (BadLocationException e) {
}
} else {
layout.draw(g2d, x, y);
}
}
}
/* paint() - get current time and draw (centered) in Component. */
public void paint(Graphics g) {
Calendar myCal = Calendar.getInstance();
StringBuffer sb = new StringBuffer();
sb.append(tf.format(myCal.get(Calendar.HOUR)));
sb.append(':');
sb.append(tflz.format(myCal.get(Calendar.MINUTE)));
sb.append(':');
sb.append(tflz.format(myCal.get(Calendar.SECOND)));
String s = sb.toString();
FontMetrics fm = getFontMetrics(getFont());
int x = (getSize().width - fm.stringWidth(s)) / 2;
// System.out.println("Size is " + getSize());
g.drawString(s, x, 10);
}
void drawScribbles(Graphics g) {
if ((scribbles == null) || (scribbles.size() == 0)) {
return;
}
DrawObject L = (DrawObject) scribbles.get(0);
int scribbleCounter = L.scribbleNum;
g.setColor(scribbleColor);
((Graphics2D) g).setStroke(new BasicStroke(2f));
int prevX = L.scribbleX;
int prevY = L.scribbleY;
for (int i = 1; i < scribbles.size(); i++) {
L = (DrawObject) scribbles.get(i);
if (L.scribbleNum == scribbleCounter) {
// Keep drawing.
g.drawLine(prevX, prevY, L.scribbleX, L.scribbleY);
prevX = L.scribbleX;
prevY = L.scribbleY;
} else {
scribbleCounter = L.scribbleNum;
prevX = L.scribbleX;
prevY = L.scribbleY;
}
}
}
/**
* This is the write() method of the stream. All Writer subclasses implement this. All other
* versions of write() are variants of this one
*/
public void write(char[] buffer, int index, int len) {
synchronized (this.lock) {
// Loop through all the characters passed to us
for (int i = index; i < index + len; i++) {
// If we haven't begun a page (or a new page), do that now.
if (page == null) newpage();
// If the character is a line terminator, then begin new line,
// unless it is a \n immediately after a \r.
if (buffer[i] == '\n') {
if (!last_char_was_return) newline();
continue;
}
if (buffer[i] == '\r') {
newline();
last_char_was_return = true;
continue;
} else last_char_was_return = false;
// If it some other non-printing character, ignore it.
if (Character.isWhitespace(buffer[i])
&& !Character.isSpaceChar(buffer[i])
&& (buffer[i] != '\t')) continue;
// If no more characters will fit on the line, start a new line.
if (charnum >= chars_per_line) {
newline();
if (page == null) newpage(); // and start a new page, if necessary
}
// Now print the character:
// If it is a space, skip one space, without output.
// If it is a tab, skip the necessary number of spaces.
// Otherwise, print the character.
// It is inefficient to draw only one character at a time, but
// because our FontMetrics don't match up exactly to what the
// printer uses we need to position each character individually.
if (Character.isSpaceChar(buffer[i])) charnum++;
else if (buffer[i] == '\t') charnum += 8 - (charnum % 8);
else {
page.drawChars(
buffer, i, 1, x0 + charnum * charwidth, y0 + (linenum * lineheight) + lineascent);
charnum++;
}
}
}
}
/**
* Called by the paint method to draw the graph and its graph items.
*
* @param g the graphics context.
*/
public void paintComponent(Graphics g) {
Dimension dim = getSize();
Insets insets = getInsets();
dataArea =
new Rectangle(
insets.left,
insets.top,
dim.width - insets.left - insets.right - 1,
dim.height - insets.top - insets.bottom - 1);
// background
if (isOpaque()) {
g.setColor(getBackground());
g.fillRect(0, 0, dim.width, dim.height);
}
g.setColor(getForeground());
// get axis tickmarks
double xticks[] = xAxis.getTicks();
double yticks[] = yAxis.getTicks();
int yb = dataArea.y + dataArea.height;
// draw grid
if (showGrid) {
g.setColor(gridColor != null ? gridColor : getBackground().darker());
// vertical x grid lines
for (int i = 0; i < xticks.length; i += 2) {
int x = dataArea.x + (int) Math.round(xticks[i]);
g.drawLine(x, dataArea.y, x, dataArea.y + dataArea.height);
}
// horizontal y grid lines
for (int i = 0; i < yticks.length; i += 2) {
int y = yb - (int) Math.round(yticks[i]);
g.drawLine(dataArea.x, y, dataArea.x + dataArea.width, y);
}
}
for (int i = 0; i < graphItems.size(); i++) {
((GraphItem) graphItems.elementAt(i)).draw(this, g, dataArea, xAxis, yAxis);
}
if (sPt != null && ePt != null) {
g.setColor(getForeground());
g.drawRect(
Math.min(sPt.x, ePt.x), Math.min(sPt.y, ePt.y),
Math.abs(ePt.x - sPt.x), Math.abs(ePt.y - sPt.y));
}
}
public static void drawValueBar(
int x, int y, String labelhead, double value, double percentage, int colorindex, Graphics g) {
g.setColor(GetColor(colorindex));
g.drawRect(x, y, VALUE_BAR_WIDTH, VALUE_BAR_HEIGHT);
int barwidth;
if (percentage < 0.0) {
// Unknown value
barwidth = VALUE_BAR_WIDTH - 1;
} else {
barwidth = (int) ((VALUE_BAR_WIDTH - 1) * Math.min(1.0, percentage));
}
// g.setColor(gradientColor(percentage));
g.fillRect(x + 1, y + 1, barwidth, VALUE_BAR_HEIGHT - 1);
if (labelhead != null) {
g.setFont(MainFrame.defaultFont);
// g.setColor(MainFrame.labelColor);
int off = 2;
g.drawString(labelhead, x + VALUE_BAR_WIDTH + 2, y + VALUE_BAR_HEIGHT);
// off += (labelhead.length()+1) * 4; // Just a guess
String maxStr = new String("DateRate [/sec]:");
off += (int) ((maxStr.length() + 1) * 5.5);
if (value < 0.0) {
g.drawString("?", x + VALUE_BAR_WIDTH + off, y + VALUE_BAR_HEIGHT);
} else {
if (percentage < 0.0) {
g.drawString(format(value), x + VALUE_BAR_WIDTH + off, y + VALUE_BAR_HEIGHT);
} else {
g.drawString(
format(value) + " (" + format(percentage * 100) + "%)",
x + VALUE_BAR_WIDTH + off,
y + VALUE_BAR_HEIGHT);
}
}
}
}
/** This internal method begins a new page and prints the header. */
protected void newpage() {
page = job.getGraphics(); // Begin the new page
linenum = 0;
charnum = 0; // Reset line and char number
pagenum++; // Increment page number
page.setFont(headerfont); // Set the header font.
page.drawString(jobname, x0, headery); // Print job name left justified
String s = "- " + pagenum + " -"; // Print the page number centered.
int w = headermetrics.stringWidth(s);
page.drawString(s, x0 + (this.width - w) / 2, headery);
w = headermetrics.stringWidth(time); // Print date right justified
page.drawString(time, x0 + width - w, headery);
// Draw a line beneath the header
int y = headery + headermetrics.getDescent() + 1;
page.drawLine(x0, y, x0 + width, y);
// Set the basic monospaced font for the rest of the page.
page.setFont(font);
}
void drawObjects(
Graphics g,
java.util.List<DrawObject> points,
java.util.List<DrawObject> lines,
java.util.List<DrawObject> ovals,
java.util.List<DrawObject> rectangles,
java.util.List<DrawObject> images,
java.util.List<DrawObject> labels,
java.util.List<DrawObject> eqnLines) {
try {
// Images
synchronized (images) {
for (DrawObject I : images) {
drawImage(g, I);
}
}
// Labels
synchronized (labels) {
for (DrawObject L : labels) {
drawLabel(g, L);
}
}
// Eqn Lines
synchronized (eqnLines) {
for (DrawObject L : eqnLines) {
g.setColor(L.color);
drawEqnLine(g, L);
}
}
// Lines
synchronized (lines) {
for (DrawObject L : lines) {
g.setColor(L.color);
drawLine(g, L);
}
}
// Rectangles
synchronized (rectangles) {
for (DrawObject R : rectangles) {
g.setColor(R.color);
drawOvalOrRectangle(g, R, true);
}
}
// Ovals
synchronized (ovals) {
for (DrawObject R : ovals) {
g.setColor(R.color);
drawOvalOrRectangle(g, R, false);
}
}
// Points.
synchronized (points) {
for (DrawObject p : points) {
g.setColor(p.color);
drawPoint(g, p);
}
}
} catch (ConcurrentModificationException e) {
e.printStackTrace();
System.exit(0);
}
}
public void paint(Graphics g) {
draw(getBufferGraphics());
g.drawImage(bufferImage, 0, 0, null);
}
void print(String str) {
g.drawString(str, x, y += 20);
}
void print(String name, Vec value) {
g.drawString(name + ":" + df.format(value.x) + " , " + df.format(value.y), x, y += 20);
}
void print(String name, double value) {
g.drawString(name + ":" + df.format(value), x, y += 20);
}
void print(String name, int value) {
g.drawString(name + ":" + value, x, y += 20);
}
void drawEqnLine(Graphics g, DrawObject L) {
if (L == null) {
return;
}
if ((sequencingOn) && (L.sequenceNum != currentSequenceNumDisplay)) {
return;
}
// First, special cases:
if ((L.a == 0) && (L.b == 0)) {
return;
}
double px = 0, py = 0, qx = 0, qy = 0;
double leftX = px, rightX = qx, leftY = py, rightY = qy;
if (L.a == 0) {
// Case 2: a=0 => horizontal line.
leftX = minX;
rightX = maxX;
py = -L.c / L.b;
qy = -L.c / L.b;
if ((py < minY) || (py > maxY)) {
// Cannot display.
return;
}
leftY = rightY = py;
} else if (L.b == 0) {
// Case 3: b=0 => vertical line.
leftX = -L.c / L.a;
rightX = -L.c / L.a;
leftY = minY;
rightY = maxY;
if ((leftX < minX) || (leftX > maxX)) {
return;
}
} else {
// Case 4: regular.
// Note: the line could intersect the drawable region in weird ways.
px = (-L.c - L.b * minY) / L.a;
qx = (-L.c - L.b * maxY) / L.a;
py = (-L.c - L.a * minX) / L.b;
qy = (-L.c - L.a * maxX) / L.b;
// System.out.println ("px=" + px + " qx=" + qx + " py=" + py + " qy=" + qy);
// Find leftmost point to draw.
if ((py >= minY) && (py <= maxY)) {
// Leftmost point is on the x=minX line.
leftX = minX;
leftY = py;
// System.out.println ("case(a): leftmost on minX-line");
} else {
// Leftmost point is not on the x=minX line.
// Find leftmost point intersecting with low or high
if (px < qx) {
leftX = px;
leftY = minY;
// System.out.println ("case(a.1): on minY-line");
} else {
leftX = qx;
leftY = maxY;
// System.out.println ("case(a.2): on maxY-line");
}
}
// Now find rightmost point.
if ((qy >= minY) && (qy <= maxY)) {
// Rightmost point is on the x=maxX line.
rightX = maxX;
rightY = qy;
// System.out.println ("case(b): rightmost on maxX-line");
} else {
if (px > qx) {
rightX = px;
rightY = minY;
// System.out.println ("case(b.1): rightmost on minY-line");
} else {
rightX = qx;
rightY = maxY;
// System.out.println ("case(b.1): rightmost on maxY-line");
}
}
}
// System.out.println ("left:(" + leftX + "," + leftY + ") right:(" + rightX + "," + rightY +
// ")");
int x1 = (int) ((leftX - minX) / (maxX - minX) * (D.width - 2 * inset));
int y1 = (int) ((leftY - minY) / (maxY - minY) * (D.height - 2.0 * inset));
int x2 = (int) ((rightX - minX) / (maxX - minX) * (D.width - 2 * inset));
int y2 = (int) ((rightY - minY) / (maxY - minY) * (D.height - 2.0 * inset));
Graphics2D g2 = (Graphics2D) g;
g2.setStroke(L.drawStroke);
g.drawLine(inset + x1, D.height - y1 - inset, inset + x2, D.height - y2 - inset);
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g;
RenderingHints rh = g2d.getRenderingHints();
rh.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
rh.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
g2d.setRenderingHints(rh);
// Background.
D = this.getSize();
g.setColor(backgroundColor);
g.fillRect(0, 0, D.width, D.height);
Graphics2D g2 = (Graphics2D) g;
g2.setStroke(lineStroke);
// Axes, bounding box.
g.setColor(Color.gray);
g.drawLine(inset, D.height - inset, D.width - inset, D.height - inset);
g.drawLine(D.width - inset, inset, D.width - inset, D.height - inset);
g.drawLine(inset, inset, inset, D.height - inset);
g.drawLine(inset, inset, D.width - inset, inset);
double xDelta = (maxX - minX) / numIntervals;
// X-ticks and labels.
for (int i = 1; i <= numIntervals; i++) {
double xTickd = i * xDelta;
int xTick = (int) (xTickd / (maxX - minX) * (D.width - 2 * inset));
g.drawLine(inset + xTick, D.height - inset - 5, inset + xTick, D.height - inset + 5);
double x = minX + i * xDelta;
g.drawString(df.format(x), xTick + inset - 5, D.height - inset + 20);
}
// Y-ticks
double yDelta = (maxY - minY) / numIntervals;
for (int i = 0; i < numIntervals; i++) {
int yTick = (i + 1) * (int) ((D.height - 2 * inset) / (double) numIntervals);
g.drawLine(inset - 5, D.height - yTick - inset, inset + 5, D.height - yTick - inset);
double y = minY + (i + 1) * yDelta;
g.drawString(df.format(y), 1, D.height - yTick - inset);
}
// Zoom+move
Font savedFont = g.getFont();
g.setFont(plusFont);
g.drawString("+", D.width - 25, 20);
g.setFont(minusFont);
g.drawString("-", D.width - 25, 50);
drawArrow(g2d, D.width - 70, 20, D.width - 70, 0, 1.0f, lineStroke); // Up
drawArrow(g2d, D.width - 70, 30, D.width - 70, 50, 1.0f, lineStroke); // Down
drawArrow(g2d, D.width - 65, 25, D.width - 45, 25, 1.0f, lineStroke); // Right
drawArrow(g2d, D.width - 75, 25, D.width - 95, 25, 1.0f, lineStroke); // Left
g.setFont(savedFont);
// See if standard axes are in the middle.
g.setColor(Color.gray);
if ((minX < 0) && (maxX > 0) && (drawMiddleAxes)) {
// Draw y-axis
int x = (int) ((0 - minX) / (maxX - minX) * (D.width - 2 * inset));
g.drawLine(inset + x, D.height - inset, inset + x, inset);
}
if ((minY < 0) && (maxY > 0) && (drawMiddleAxes)) {
// Draw x-axis
int y = (int) ((0 - minY) / (maxY - minY) * (D.height - 2.0 * inset));
g.drawLine(inset, D.height - y - inset, D.width - inset, D.height - y - inset);
}
// Draw the objects.
drawObjects(g, points, lines, ovals, rectangles, images, labels, eqnLines);
if (animationMode) {
drawObjects(g, animPoints, animLines, animOvals, animRectangles, null, labels, eqnLines);
// No images in animation mode.
}
drawScribbles(g);
}