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);
}
}
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 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);
}
}
/**
* 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));
}
}
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);
}
}
}
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);
}
}
}
}
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);
}
