update mpv config

Signed-off-by: Robert Günzler <r@gnzler.io>

1 files changed, 314 insertions, 0 deletions

diff --git a/.config/mpv/mvi/scripts/ruler.lua b/.config/mpv/mvi/scripts/ruler.lua
new file mode 100644
index 0000000..2cfcd0f
--- /dev/null
+++ b/.config/mpv/mvi/scripts/ruler.lua
@@ -0,0 +1,314 @@
+local opts = {
+    show_distance = true,
+    show_coordinates = true,
+    coordinates_space = "image",
+    show_angles = "degrees",
+    line_width = 2,
+    dots_radius = 3,
+    font_size = 36,
+    line_color = "33",
+    confirm_bindings = "MBTN_LEFT,ENTER",
+    exit_bindings = "ESC",
+    set_first_point_on_begin = false,
+    clear_on_second_point_set = false,
+}
+
+local options = require 'mp.options'
+local msg = require 'mp.msg'
+local assdraw = require 'mp.assdraw'
+
+local state = 0 -- {0,1,2,3} = {inactive,setting first point,setting second point,done}
+local first_point = nil -- in normalized video space coordinates
+local second_point = nil -- in normalized video space coordinates
+local video_dimensions_stale = false
+
+function split(input)
+    local ret = {}
+    for str in string.gmatch(input, "([^,]+)") do
+        ret[#ret + 1] = str
+    end
+    return ret
+end
+
+local confirm_bindings = split(opts.confirm_bindings)
+local exit_bindings = split(opts.exit_bindings)
+
+options.read_options(opts, nil, function()
+    if state ~= 0 then
+        remove_bindings()
+    end
+    confirm_bindings = split(opts.confirm_bindings)
+    exit_bindings = split(opts.exit_bindings)
+    if state ~= 0 then
+        add_bindings()
+        mark_stale()
+    end
+end)
+
+function draw_ass(ass)
+    local ww, wh = mp.get_osd_size()
+    mp.set_osd_ass(ww, wh, ass)
+end
+
+
+function cursor_video_space_normalized(dim)
+    local mx, my = mp.get_mouse_pos()
+    local ret = {}
+    ret[1] = (mx - dim.ml) / (dim.w - dim.ml - dim.mr)
+    ret[2] = (my - dim.mt) / (dim.h - dim.mt - dim.mb)
+    return ret
+end
+
+function refresh()
+    if not video_dimensions_stale then return end
+    video_dimensions_stale = false
+
+    local dim = mp.get_property_native("osd-dimensions")
+    local out_params = mp.get_property_native("video-out-params")
+    if not dim or not out_params then
+        draw_ass("")
+        return
+    end
+    local vid_width = out_params.dw
+    local vid_height = out_params.dh
+
+    function video_space_normalized_to_video(point)
+        local ret = {}
+        ret[1] = point[1] * vid_width
+        ret[2] = point[2] * vid_height
+        return ret
+    end
+    function video_space_normalized_to_screen(point)
+        local ret = {}
+        ret[1] = point[1] * (dim.w - dim.ml - dim.mr) + dim.ml
+        ret[2] = point[2] * (dim.h - dim.mt - dim.mb) + dim.mt
+        return ret
+    end
+
+    local line_start = {}
+    local line_end = {}
+    if second_point then
+        line_start.image = video_space_normalized_to_video(first_point)
+        line_start.screen = video_space_normalized_to_screen(first_point)
+        line_end.image = video_space_normalized_to_video(second_point)
+        line_end.screen = video_space_normalized_to_screen(second_point)
+    elseif first_point then
+        line_start.image = video_space_normalized_to_video(first_point)
+        line_start.screen = video_space_normalized_to_screen(first_point)
+        line_end.image = video_space_normalized_to_video(cursor_video_space_normalized(dim))
+        line_end.screen = {}
+        line_end.screen[1], line_end.screen[2] = mp.get_mouse_pos()
+    else
+        local mx, my = mp.get_mouse_pos()
+        line_start.image = video_space_normalized_to_video(cursor_video_space_normalized(dim))
+        line_start.screen = {}
+        line_start.screen[1], line_start.screen[2] = mp.get_mouse_pos()
+        line_end = line_start
+    end
+    local distinct = (math.abs(line_start.screen[1] - line_end.screen[1]) >= 1
+                   or math.abs(line_start.screen[2] - line_end.screen[2]) >= 1)
+
+    local a = assdraw:ass_new()
+    local draw_setup = function(bord)
+        a:new_event()
+        a:pos(0,0)
+        a:append("{\\bord" .. bord .. "}")
+        a:append("{\\shad0}")
+        local r = opts.line_color
+        a:append("{\\3c&H".. r .. r .. r .. "&}")
+        a:append("{\\1a&HFF}")
+        a:append("{\\2a&HFF}")
+        a:append("{\\3a&H00}")
+        a:append("{\\4a&HFF}")
+        a:draw_start()
+    end
+    local dot = function(pos, size)
+        draw_setup(size)
+        a:move_to(pos[1], pos[2]-0.5)
+        a:line_to(pos[1], pos[2]+0.5)
+    end
+    local line = function(from, to, size)
+        draw_setup(size)
+        a:move_to(from[1], from[2])
+        a:line_to(to[1], to[2])
+    end
+    if distinct then
+        dot(line_start.screen, opts.dots_radius)
+        line(line_start.screen, line_end.screen, opts.line_width)
+        dot(line_end.screen, opts.dots_radius)
+    else
+        dot(line_start.screen, opts.dots_radius)
+    end
+
+    local line_info = function()
+        if not opts.show_distance then return end
+        a:new_event()
+        a:append("{\\fs36}{\\bord1}")
+        a:pos((line_start.screen[1] + line_end.screen[1]) / 2, (line_start.screen[2] + line_end.screen[2]) / 2)
+        local an = 1
+        if line_start.image[1] < line_end.image[1] then an = an + 2 end
+        if line_start.image[2] < line_end.image[2] then an = an + 6 end
+        a:an(an)
+        local image = math.sqrt(math.pow(line_start.image[1] - line_end.image[1], 2) + math.pow(line_start.image[2] - line_end.image[2], 2))
+        local screen = math.sqrt(math.pow(line_start.screen[1] - line_end.screen[1], 2) + math.pow(line_start.screen[2] - line_end.screen[2], 2))
+        if opts.coordinates_space == "both" then
+            a:append(string.format("image: %.1f\\Nscreen: %.1f", image, screen))
+        elseif opts.coordinates_space == "image" then
+            a:append(string.format("%.1f", image))
+        elseif opts.coordinates_space == "window" then
+            a:append(string.format("%.1f", screen))
+        end
+    end
+    local dot_info = function(pos, opposite)
+        if not opts.show_coordinates then return end
+        a:new_event()
+        a:append("{\\fs" .. opts.font_size .."}{\\bord1}")
+        a:pos(pos.screen[1], pos.screen[2])
+        local an
+        if distinct then
+            an = 1
+            if line_start.image[1] > line_end.image[1] then an = an + 2 end
+            if line_start.image[2] < line_end.image[2] then an = an + 6 end
+        else
+            an = 7
+        end
+        if opposite then
+            an = 9 + 1 - an
+        end
+        a:an(an)
+        if opts.coordinates_space == "both" then
+            a:append(string.format("image: %.1f, %.1f\\Nscreen: %i, %i",
+                pos.image[1], pos.image[2], pos.screen[1], pos.screen[2]))
+        elseif opts.coordinates_space == "image" then
+            a:append(string.format("%.1f, %.1f", pos.image[1], pos.image[2]))
+        elseif opts.coordinates_space == "window" then
+            a:append(string.format("%i, %i", pos.screen[1], pos.screen[2]))
+        end
+    end
+    dot_info(line_start, true)
+    if distinct then
+        line_info()
+        dot_info(line_end, false)
+    end
+    if distinct and opts.show_angles ~= "no" then
+        local dist = 50
+        local pos_from_angle = function(mult, angle)
+            return {
+                line_start.screen[1] + mult * dist * math.cos(angle),
+                line_start.screen[2] + mult * dist * math.sin(angle),
+            }
+        end
+        local extended = { line_start.screen[1], line_start.screen[2] }
+        if line_end.screen[1] > line_start.screen[1] then
+            extended[1] = extended[1] + dist
+        else
+            extended[1] = extended[1] - dist
+        end
+        line(line_start.screen, extended, math.max(0, opts.line_width-0.5))
+        local angle = math.atan(math.abs(line_start.image[2] - line_end.image[2]) / math.abs(line_start.image[1] - line_end.image[1]))
+        local fix_angle
+        local an
+        if line_end.image[2] < line_start.image[2] and line_end.image[1] > line_start.image[1] then
+            -- upper-right
+            an = 4
+            fix_angle = function(angle) return - angle end
+        elseif line_end.image[2] < line_start.image[2] then
+            -- upper-left
+            an = 6
+            fix_angle = function(angle) return math.pi + angle end
+        elseif line_end.image[1] < line_start.image[1] then
+            -- bottom-left
+            an = 6
+            fix_angle = function(angle) return math.pi - angle end
+        else
+            -- bottom-right
+            an = 4
+            fix_angle = function(angle) return angle end
+        end
+        -- should implement this https://math.stackexchange.com/questions/873224/calculate-control-points-of-cubic-bezier-curve-approximating-a-part-of-a-circle
+        local cp1 = pos_from_angle(1, fix_angle(angle*1/4))
+        local cp2 = pos_from_angle(1, fix_angle(angle*3/4))
+        local p2 = pos_from_angle(1, fix_angle(angle))
+        a:bezier_curve(cp1[1], cp1[2], cp2[1], cp2[2], p2[1], p2[2])
+
+        a:new_event()
+        a:append("{\\fs" .. opts.font_size .."}{\\bord1}")
+        local text_pos = pos_from_angle(1.1, fix_angle(angle*2/3)) -- you'd think /2 would make more sense, but *2/3  looks better
+        a:pos(text_pos[1], text_pos[2])
+        a:an(an)
+        if opts.show_angles == "both" then
+            a:append(string.format("%.2f\\N%.1f°", angle, angle / math.pi * 180))
+        elseif opts.show_angles == "degrees" then
+            a:append(string.format("%.1f°", angle / math.pi * 180))
+        elseif opts.show_angles == "radians" then
+            a:append(string.format("%.2f", angle))
+        end
+    end
+
+    draw_ass(a.text)
+end
+
+function mark_stale()
+    video_dimensions_stale = true
+end
+
+function add_bindings()
+    mp.add_forced_key_binding("mouse_move", "ruler-mouse-move", mark_stale)
+    for _, key in ipairs(confirm_bindings) do
+        mp.add_forced_key_binding(key, "ruler-next-" .. key, next_step)
+    end
+    for _, key in ipairs(exit_bindings) do
+        mp.add_forced_key_binding(key, "ruler-stop-" .. key, stop)
+    end
+end
+
+function remove_bindings()
+    for _, key in ipairs(confirm_bindings) do
+        mp.remove_key_binding("ruler-next-" .. key)
+    end
+    for _, key in ipairs(exit_bindings) do
+        mp.remove_key_binding("ruler-stop-" .. key)
+    end
+    mp.remove_key_binding("ruler-mouse-move")
+end
+
+function next_step()
+    if state == 0 then
+        state = 1
+        mp.register_idle(refresh)
+        mp.observe_property("osd-dimensions", nil, mark_stale)
+        mark_stale()
+        add_bindings()
+        if opts.set_first_point_on_begin then
+            next_step()
+        end
+    elseif state == 1 then
+        local dim = mp.get_property_native("osd-dimensions")
+        if not dim then return end
+        state = 2
+        first_point = cursor_video_space_normalized(dim)
+    elseif state == 2 then
+        local dim = mp.get_property_native("osd-dimensions")
+        if not dim then return end
+        state = 3
+        second_point = cursor_video_space_normalized(dim)
+        if opts.clear_on_second_point_set then
+            next_step()
+        end
+    else
+        stop()
+    end
+end
+
+function stop()
+    if state == 0 then return end
+    mp.unregister_idle(refresh)
+    mp.unobserve_property(mark_stale)
+    remove_bindings()
+    state = 0
+    first_point = nil
+    second_point = nil
+    draw_ass("")
+end
+
+mp.add_key_binding(nil, "ruler", next_step)