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 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();
}