Float
simplex_noise<Float,N>::sample(
vector const &in)
{
Float res = static_cast<Float>(0);
vector tmp = stretch_m() * in;
for(typename vector::iterator it = tmp.begin(); it != tmp.end(); ++it)
{
*it = std::floor(*it);
}
vector floored(tmp);
tmp = inv_m() * tmp;
tmp = in - tmp;
vector offset(tmp);
tmp = stretch_m() * tmp;
corner_array c = corners(tmp);
for (typename corner_array::const_iterator v = c.begin(); v != c.end(); ++v)
{
vector t(in - inv_m() * (floored + *v));
res +=
contrib(t, floored + *v);
}
// FIXME: replace this magic number with something sensible
return static_cast<Float>(40.0) * res;
}
ToolResult MouseDown(const PosInfo& info) override{
Canvas& canvas = info.canvas;
HotSpot hotSpot(floored(info.pos));
if (info.modifiers.LeftMouse()){
// Command for setting the hot spot to the current frame.
auto frameIndex = canvas.GetSelectedFrame();
const Image& frame = canvas.GetFrame(frameIndex);
m_command.Set(set_frame_hotspot_command(frameIndex, New(hotSpot),
Old(frame.GetHotSpot())));
m_hotSpot = hotSpot;
return ToolResult::COMMIT;
}
else if (info.modifiers.RightMouse()){
// Command for setting the hot-spot to all frames.
auto commands = make_vector(up_to(canvas.GetNumFrames()),
[&](const auto& i){
const Image& frame = canvas.GetFrame(i);
return set_frame_hotspot_command(i,
New(hotSpot),
Old(frame.GetHotSpot()));});
m_hotSpot = hotSpot;
m_command.Set(perhaps_bunch(CommandType::FRAME,
bunch_name("Set frame hot spots"),
std::move(commands)));
return ToolResult::COMMIT;
}
else{
return ToolResult::NONE;
}
}
