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();
}
