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Diffstat (limited to '')
| -rw-r--r-- | .config/mpv/mvi/scripts/ruler.lua | 314 |
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) |