public override void Step()
{
bool advanceRay = TestSettings.pause == false || TestSettings.singleStep;
base.Step();
float L = 11.0f;
Vec2 point1 = new Vec2(0.0f, 10.0f);
Vec2 d = new Vec2(L * (float)Math.Cos(m_angle), L * (float)Math.Sin(m_angle));
Vec2 point2 = point1 + d;
if (m_mode == Mode.e_closest)
{
_callback = new RayCastClosestCallback();
m_world.RayCast(_callback, point1, point2);
}
else if (m_mode == Mode.e_any)
{
_callback = new RayCastAnyCallback();
m_world.RayCast(_callback, point1, point2);
}
else if (m_mode == Mode.e_multiple)
{
_callback = new RayCastMultipleCallback();
m_world.RayCast(_callback, point1, point2);
}
if (advanceRay)
{
m_angle += (float)(0.25 * Math.PI / 180.0);
}
}
public void RayCast(RayCastCallback callback, Vec2 point1, Vec2 point2)
{
NativeMethods.b2world_raycast(_worldPtr, callback.Listener, point1, point2);
}
public override void Draw()
{
base.Draw();
m_debugDraw.DrawString(5, m_textLine, "Press 1-5 to place stuff, m to change the mode");
m_textLine += 15;
m_debugDraw.DrawString(5, m_textLine, "Mode = "+m_mode.ToString());
m_textLine += 15;
if (_callback == null)
return;
float L = 11.0f;
Vec2 point1 = new Vec2(0.0f, 10.0f);
Vec2 d = new Vec2(L * (float)Math.Cos(m_angle), L * (float)Math.Sin(m_angle));
Vec2 point2 = point1 + d;
if (_callback is RayCastClosestCallback)
{
RayCastClosestCallback callback = (RayCastClosestCallback)_callback;
m_world.RayCast(_callback, point1, point2);
if (callback.m_hit)
{
m_debugDraw.DrawPoint(callback.m_point, 5.0f, new ColorF(0.4f, 0.9f, 0.4f));
m_debugDraw.DrawSegment(point1, callback.m_point, new ColorF(0.8f, 0.8f, 0.8f));
Vec2 head = callback.m_point + 0.5f * callback.m_normal;
m_debugDraw.DrawSegment(callback.m_point, head, new ColorF(0.9f, 0.9f, 0.4f));
}
else
{
m_debugDraw.DrawSegment(point1, point2, new ColorF(0.8f, 0.8f, 0.8f));
}
}
else if (_callback is RayCastAnyCallback)
{
RayCastAnyCallback callback = (RayCastAnyCallback)_callback;
_callback = new RayCastAnyCallback();
if (callback.m_hit)
{
m_debugDraw.DrawPoint(callback.m_point, 5.0f, new ColorF(0.4f, 0.9f, 0.4f));
m_debugDraw.DrawSegment(point1, callback.m_point, new ColorF(0.8f, 0.8f, 0.8f));
Vec2 head = callback.m_point + 0.5f * callback.m_normal;
m_debugDraw.DrawSegment(callback.m_point, head, new ColorF(0.9f, 0.9f, 0.4f));
}
else
{
m_debugDraw.DrawSegment(point1, point2, new ColorF(0.8f, 0.8f, 0.8f));
}
}
else if (_callback is RayCastMultipleCallback)
{
RayCastMultipleCallback callback = (RayCastMultipleCallback)_callback;
m_debugDraw.DrawSegment(point1, point2, new ColorF(0.8f, 0.8f, 0.8f));
for (int i = 0; i < callback.m_count; ++i)
{
Vec2 p = callback.m_points[i];
Vec2 n = callback.m_normals[i];
m_debugDraw.DrawPoint(p, 5.0f, new ColorF(0.4f, 0.9f, 0.4f));
m_debugDraw.DrawSegment(point1, p, new ColorF(0.8f, 0.8f, 0.8f));
Vec2 head = p + 0.5f * n;
m_debugDraw.DrawSegment(p, head, new ColorF(0.9f, 0.9f, 0.4f));
}
}
}
public void RayCast(RayCastCallback callback, Vec2 point1, Vec2 point2)
{
NativeMethods.b2world_raycast(_worldPtr, callback.Listener, point1, point2);
}