public static void drawImage(int[][][] pixels, int startX, int startY) {
// Key idea: draw a bunch (lots of rectangles) with the appropriate color
DrawObject R = new DrawObject();
R.pixels = pixels;
R.startX = startX;
R.startY = startY;
R.sequenceNum = currentSequenceNum;
images.add(R);
// Rescale if needed.
int leftX = startX;
int rightX = startX + pixels.length;
int lowY = startY;
int highY = startY + pixels[0].length;
if (minX > leftX) {
minX = leftX;
}
if (maxX < rightX) {
maxX = rightX;
}
if (minY > lowY) {
minY = lowY;
}
if (maxY < highY) {
maxY = highY;
}
drawArea.repaint();
}
static void handleMouseDragged(MouseEvent e) {
DrawObject L = new DrawObject();
L.scribbleX = e.getX();
L.scribbleY = e.getY();
L.scribbleNum = currentScribbleNum;
scribbles.add(L);
drawArea.repaint();
}
public static void drawLine(double x1, double y1, double x2, double y2, boolean isArrow) {
DrawObject L = new DrawObject();
L.color = lineColor;
L.x = x1;
L.y = y1;
L.x2 = x2;
L.y2 = y2;
if (isArrow) {
L.color = arrowColor;
L.isArrow = true;
}
L.sequenceNum = currentSequenceNum;
L.drawStroke = drawStroke;
if (animationMode) {
synchronized (animLines) {
animLines.add(L);
}
} else {
synchronized (lines) {
lines.add(L);
}
}
drawArea.repaint();
}
public static void drawLineFromEquation(double a, double b, double c) {
// Draw the equation ax+by+c=0 in the available range.
DrawObject L = new DrawObject();
L.color = lineEqnColor;
L.a = a;
L.b = b;
L.c = c;
L.sequenceNum = currentSequenceNum;
L.drawStroke = drawStroke;
synchronized (eqnLines) {
eqnLines.add(L);
}
drawArea.repaint();
}
public static void drawRectangle(double x1, double y1, double width, double height) {
DrawObject R = new DrawObject();
R.color = rectangleColor;
R.x = x1;
R.y = y1;
R.width = width;
R.height = height;
R.sequenceNum = currentSequenceNum;
R.drawStroke = drawStroke;
if (animationMode) {
synchronized (animRectangles) {
animRectangles.add(R);
}
} else {
synchronized (rectangles) {
rectangles.add(R);
}
}
drawArea.repaint();
}
public static void drawLabel(double x, double y, String str) {
DrawObject L = new DrawObject();
L.color = labelColor;
L.x = x;
L.y = y;
L.str = str;
L.sequenceNum = currentSequenceNum;
if (animationMode) {
synchronized (animLabels) {
animLabels.add(L);
}
} else {
synchronized (labels) {
labels.add(L);
}
}
drawArea.repaint();
}
public static void drawPoint(double x, double y) {
DrawObject p = new DrawObject();
p.color = pointColor;
p.x = x;
p.y = y;
p.diameter = pointDiameter;
p.sequenceNum = currentSequenceNum;
if (animationMode) {
synchronized (animPoints) {
animPoints.add(p);
}
} else {
synchronized (points) {
points.add(p);
}
}
drawArea.repaint();
}