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local circle = pd.Class:new():register("circle-gui")
function circle:initialize(sel, atoms)
self.slider_position_x = 0.5
self.slider_position_y = 0.5
self.inlets = {DATA}
self.outlets = {DATA}
self.range_start = -1
self.range_end = 1
self.bg = Colors.background
self.fg = Colors.foreground
self:set_size(127, 127)
self:restore_state(atoms)
return true
end
function circle:restore_state(atoms)
if #atoms >= 11 then
local size = atoms[1]
self.range_start = atoms[2]
self.range_end = atoms[3]
self.slider_position_x = atoms[4]
self.slider_position_y = atoms[5]
if atoms[7] == -1 then
self.bg = atoms[6]
else
self.bg = {atoms[6], atoms[7], atoms[8]}
end
if atoms[10] == -1 then
self.fg = atoms[9]
else
self.fg = {atoms[9], atoms[10], atoms[11]}
end
self:set_size(size, size)
self:repaint()
end
end
function circle:save_state()
local width, height = self:get_size()
local state = {
width, self.range_start, self.range_end, self.slider_position_x, self.slider_position_y
}
local function append_color(color)
if type(color) == "number" then
state[#state + 1] = color
state[#state + 1] = -1
state[#state + 1] = -1
else
state[#state + 1] = color[1]
state[#state + 1] = color[2]
state[#state + 1] = color[3]
end
end
append_color(self.bg)
append_color(self.fg)
self:set_args(state)
end
function circle:mouse_down(x, y)
local width, height = self:get_size()
self.mouse_down_x = x
self.mouse_down_y = y
self.mouse_down_slider_x = self.slider_position_x * width
self.mouse_down_slider_y = self.slider_position_y * height
end
function circle:mouse_drag(x, y)
local width, height = self:get_size()
local dx = x - self.mouse_down_x
local dy = y - self.mouse_down_y
local new_x = ((self.mouse_down_slider_x + dx) / width) - 0.5
local new_y = ((self.mouse_down_slider_y + dy) / height) - 0.5
local distance = math.sqrt(new_x^2 + new_y^2)
local angle = math.atan(new_y, new_x)
distance = math.max(0, math.min(0.5, distance))
new_x = math.cos(angle) * distance + 0.5
new_y = math.sin(angle) * distance + 0.5
if new_x ~= self.slider_position_x or new_y ~= self.slider_position_y then
self.slider_position_x = new_x
self.slider_position_y = new_y
self:in_1_bang()
end
self:repaint()
end
function circle:mouse_up(x, y)
self:save_state()
end
function circle:in_1_bang()
local x = self:scale_value(self.slider_position_x, self.range_start, self.range_end)
local y = self:scale_value(self.slider_position_y, self.range_start, self.range_end)
self:outlet(1, "list", {x, y})
end
function circle:in_1_size(atoms)
self:set_size(atoms[1], atoms[1])
self:save_state()
end
function circle:in_1_range(atoms)
self.range_start = atoms[1]
self.range_end = atoms[2]
self:save_state()
end
function circle:in_1_bgcolor(atoms)
self.bg = atoms
self:repaint()
self:save_state()
end
function circle:in_1_fgcolor(atoms)
self.fg = atoms
self:repaint()
self:save_state()
end
function circle:scale_value(value, min, max)
return min + (max - min) * value
end
function circle:paint(g)
local width, height = self:get_size()
local x = self.slider_position_x * width
local y = self.slider_position_y * height
if type(self.bg) == "number" then
g:set_color(self.bg)
elseif type(self.bg) == "table" then
g:set_color(table.unpack(self.bg))
end
g:fill_all()
if type(self.fg) == "number" then
g:set_color(self.fg)
elseif type(self.fg) == "table" then
g:set_color(table.unpack(self.fg))
end
g:fill_ellipse(x - 3.5, y - 3.5, 7, 7)
g:stroke_ellipse(1, 1, width - 2, height - 2, 1)
if self.grid ~= 0 then
g:draw_line(width / 2, 0, width / 2, height, 1)
g:draw_line(0, height / 2, width, height / 2, 1)
end
g:draw_line(x, y, x, height / 2, 2)
g:draw_line(x, y, width / 2, y, 2)
end
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