public static ApplesoftProgram fromBinary(List<Byte> binary, int startAddress) {
ApplesoftProgram program = new ApplesoftProgram();
int currentAddress = startAddress;
int pos = 0;
while (pos < binary.size()) {
int nextAddress = (binary.get(pos) & 0x0ff) + ((binary.get(pos + 1) & 0x0ff) << 8);
if (nextAddress == 0) {
break;
}
int length = nextAddress - currentAddress;
Line l = Line.fromBinary(binary, pos);
if (l == null) {
break;
}
program.lines.add(l);
if (l.getLength() != length) {
System.out.println(
"Line "
+ l.getNumber()
+ " parsed as "
+ l.getLength()
+ " bytes long, but that leaves "
+ (length - l.getLength())
+ " bytes hidden behind next line");
}
pos += length;
currentAddress = nextAddress;
}
return program;
}
/**
* Calculates and returns the area of the triangle This one uses 1/2 a*b cos(C)
*
* @return the area of the triangle
*/
public double getArea2() {
Line side1 = new Line(pointA, pointB);
Line side2 = new Line(pointA, pointC);
double angleCAB =
Math.acos(
((pointB.getX() - pointA.getX()) * (pointC.getX() - pointA.getX())
+ (pointB.getY() - pointA.getY()) * (pointC.getY() - pointA.getY()))
/ (side1.getLength() * side2.getLength()));
double area = 0.5 * side1.getLength() * side2.getLength() * Math.sin(angleCAB);
return area;
}
public static void main(String args[]) {
Point p1 = new Point(0, 0);
Point p2 = new Point(3, 4);
Line lineA = new Line(p1, p2);
System.out.println("Line A: " + lineA);
System.out.println(lineA.getLength());
Line lineB = new Line(0, 0, 6, 8);
System.out.println("Line B: " + lineB);
System.out.println(lineB.getLength());
}
public void run() {
RAM memory = Emulator.computer.memory;
Emulator.computer.pause();
int pos = memory.readWordRaw(startingAddressPointer);
for (Line line : lines) {
int nextPos = pos + line.getLength() + 1;
memory.write(pos++, (byte) (nextPos & 0x0ff), false, true);
memory.write(pos++, (byte) (nextPos >> 8 & 0x0ff), false, true);
memory.write(pos++, (byte) (line.getNumber() & 0x0ff), false, true);
memory.write(pos++, (byte) (line.getNumber() >> 8 & 0x0ff), false, true);
boolean isFirst = true;
for (Command command : line.getCommands()) {
if (!isFirst) {
memory.write(pos++, (byte) ':', false, true);
}
isFirst = false;
for (Command.ByteOrToken part : command.parts) {
memory.write(pos++, part.getByte(), false, true);
}
}
memory.write(pos++, (byte) 0, false, true);
}
memory.write(pos++, (byte) 0, false, true);
memory.write(pos++, (byte) 0, false, true);
memory.write(pos++, (byte) 0, false, true);
memory.write(pos++, (byte) 0, false, true);
// Emulator.computer.cpu.setProgramCounter(BASIC_RUN);
Emulator.computer.resume();
}
/**
* Calculates and returns the perimeter of the triangle
*
* @return the triangle's perimeter
*/
public double getPerimeter() {
double perimeter = 0;
Line[] sides = getSides();
for (Line l : sides) {
perimeter += l.getLength();
}
return perimeter;
}
public double getArea3() {
double s = getPerimeter() / 2;
double product = s;
for (Line side : getSides()) {
product *= s - side.getLength();
}
return Math.sqrt(product);
}
/**
* Calculates and returns the area of the triangle This one uses 1/2 b*h
*
* @return the area of the triangle
*/
public double getArea() {
Line alt = getAltitude();
Line base = new Line(pointB, pointC);
double area = 0.5 * alt.getLength() * base.getLength();
return area;
}