public void Draw(List <LSSymbol> cmds)
{
Stack <Location> stack = new Stack <Location> ();
// start at grid 0,0 facing north with no color index
Location pos = new Location(0.0f, 0.0f, 90.0f, 0);
// process each command in turn
float yOffset = 0; //this._yOffset,
Color[] colorList = new Color[] { Color.black, Color.black, Color.black, Color.black, Color.black };
bool draw = true;
Vector3 v3;
float rad;
Color color;
Color lastcolor = Color.black;
int len = cmds.Count;
#if DG
string log = "";
#endif
for (int i = 0; i < len; i++)
{
LSSymbol c = cmds[i];
switch (c.id)
{
// ANTICLOCK = '+'
// CLOCKWISE = '-'
// PUSH = '['
// POP = ']'
// COLOR = 'C'
case COLOR:
// get color index from next character
pos.colorIndex = cmds[++i].id;
#if DG
log += " / color " + pos.colorIndex;
#endif
break;
case ANTICLOCK:
pos.AddAngle(angle);
#if DG
log += " / turn + " + pos.heading.eulerAngles;
#endif
break;
case CLOCKWISE:
pos.AddAngle(-angle);
#if DG
log += " / turn - " + pos.heading.eulerAngles;
#endif
break;
case PUSH:
stack.Push(pos);
#if DG
log += " / PUSH";
#endif
break;
case POP:
pos = stack.Pop();
v3 = new Vector3(pos.position.x, pos.position.y + yOffset, 0);
vectors.Add(v3);
#if DG
log += " / POP";
#endif
break;
case CONSTANT:
break;
default:
#if DG
log += " / Line ";
#endif
// move the turtle
rad = pos.heading.eulerAngles.z * Mathf.PI / 180f;
pos.position.x += distance * Mathf.Cos(rad);
pos.position.y += distance * Mathf.Sin(rad);
if (draw)
{
// render this element
/*if (renderLineWidths)
* {
* width = (maxStackDepth - stack.length);
* ctx.lineWidth = width >= 1 ? width : 1;
* }*/
color = colorList[pos.colorIndex];
if (lastcolor != color)
{
//ctx.strokeStyle = color;
lastcolor = color;
}
//ctx.beginPath();
/* ctx.moveTo(lastX, HEIGHT - (lastY + yOffset));
* ctx.lineTo(pos.x, HEIGHT - (pos.y + yOffset));*/
v3 = new Vector3(pos.position.x, pos.position.y + yOffset, 0);
vectors.Add(v3);
//ctx.closePath();
//ctx.stroke();
}
else
{
// remember min/max position
Vector3 min = Vector3.one * float.MinValue;
Vector3 max = Vector3.one * float.MaxValue;
if (pos.position.x < min.x)
{
min.x = pos.position.x;
}
else if (pos.position.x > max.x)
{
max.x = pos.position.x;
}
if (pos.position.y < min.y)
{
min.y = pos.position.y;
}
else if (pos.position.y > max.y)
{
max.y = pos.position.y;
}
Vector3 extent = max - min;
bounds = new Bounds(Vector3.zero, extent);
int numStack = stack.Count;
if (numStack > maxStackDepth)
{
maxStackDepth = numStack;
}
}
break;
}
}
#if DG
DG.Log(log);
#endif
}
