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authorWilliam Wilgus <me.theuser@yahoo.com>2018-07-22 18:43:04 +0200
committerWilliam Wilgus <me.theuser@yahoo.com>2018-07-22 18:43:04 +0200
commitef210b5fe4f72a102dcaa1f752d3022d62da8bc4 (patch)
tree54f00fe62f23ca6fc387b6f8702cf6737f795032 /apps/plugins/lua/include_lua/draw.lua
parent2daec3d3c3d84e7176a22bc073ca5530e8e44c6d (diff)
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Revert "Rocklua -- Extend / Fix rliImage"
This reverts commit 2daec3d3c3d84e7176a22bc073ca5530e8e44c6d. Change-Id: I53ea1f491e3c6d6fb759f426f203f927bd26b1e9
Diffstat (limited to 'apps/plugins/lua/include_lua/draw.lua')
-rw-r--r--apps/plugins/lua/include_lua/draw.lua468
1 files changed, 0 insertions, 468 deletions
diff --git a/apps/plugins/lua/include_lua/draw.lua b/apps/plugins/lua/include_lua/draw.lua
deleted file mode 100644
index f59e439..0000000
--- a/apps/plugins/lua/include_lua/draw.lua
+++ /dev/null
@@ -1,468 +0,0 @@
---[[ Lua Drawing functions
-/***************************************************************************
- * __________ __ ___.
- * Open \______ \ ____ ____ | | _\_ |__ _______ ___
- * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
- * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
- * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
- * \/ \/ \/ \/ \/
- * $Id$
- *
- * Copyright (C) 2017 William Wilgus
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ****************************************************************************/
-]]
-
---[[ Exposed Functions
-
- _draw.circle
- _draw.circle_filled
- _draw.ellipse
- _draw.ellipse_filled
- _draw.ellipse_rect_filled
- _draw.ellipse_rect
- _draw.flood_fill
- _draw.hline
- _draw.image
- _draw.line
- _draw.polygon
- _draw.polyline
- _draw.rect
- _draw.rect_filled
- _draw.rounded_rect
- _draw.rounded_rect_filled
- _draw.text
- _draw.vline
-
-]]
-
---[[ bClip allows drawing out of bounds without raising an error it is slower
- than having a correctly bounded figure, but can be helpful in some cases..
-]]
-
-if not rb.lcd_framebuffer then rb.splash(rb.HZ, "No Support!") return nil end
-
-local _draw = {} do
-
- -- Internal Constants
- local _LCD = rb.lcd_framebuffer()
- local LCD_W, LCD_H = rb.LCD_WIDTH, rb.LCD_HEIGHT
- local BSAND = 8 -- blits color to dst if src <> 0
- local _NIL = nil -- nil placeholder
-
- local function set_viewport(vp)
- if not vp then rb.set_viewport() return end
- if rb.LCD_DEPTH == 2 then -- invert 2-bit screens
- --vp.drawmode = bit.bxor(vp.drawmode, 4)
- vp.fg_pattern = 3 - vp.fg_pattern
- vp.bg_pattern = 3 - vp.bg_pattern
- end
- rb.set_viewport(vp)
- end
-
- -- line
- local function line(img, x1, y1, x2, y2, color, bClip)
- img:line(x1, y1, x2, y2, color, bClip)
- end
-
- -- horizontal line; x, y define start point; length in horizontal direction
- local function hline(img, x, y , length, color, bClip)
- img:line(x, y, x + length, _NIL, color, bClip)
- end
-
- -- vertical line; x, y define start point; length in vertical direction
- local function vline(img, x, y , length, color, bClip)
- img:line(x, y, _NIL, y + length, color, bClip)
- end
-
- -- draws a non-filled figure based on points in t-points
- local function polyline(img, x, y, t_points, color, bClosed, bClip)
- if #t_points < 2 then error("not enough points", 3) end
-
- local pt_first_last
-
- if bClosed then
- pt_first_last = t_points[1]
- else
- pt_first_last = t_points[#t_points]
- end
-
- for i = 1, #t_points, 1 do
- local pt1 = t_points[i]
-
- local pt2 = t_points[i + 1] or pt_first_last-- first and last point
-
- img:line(pt1[1] + x, pt1[2] + y, pt2[1]+x, pt2[2]+y, color, bClip)
- end
-
- end
-
- -- rectangle
- local function rect(img, x, y, width, height, color, bClip)
- if width == 0 or height == 0 then return end
-
- local ppt = {{0, 0}, {width, 0}, {width, height}, {0, height}}
- polyline(img, x, y, ppt, color, true, bClip)
- --[[
- vline(img, x, y, height, color, bClip);
- vline(img, x + width, y, height, color, bClip);
- hline(img, x, y, width, color, bClip);
- hline(img, x, y + height, width, color, bClip);]]
- end
-
- -- filled rect, fillcolor is color if left empty
- local function rect_filled(img, x, y, width, height, color, fillcolor, bClip)
- if width == 0 or height == 0 then return end
-
- if not fillcolor then
- img:clear(color, x, y, x + width, y + height, bClip)
- else
- img:clear(fillcolor, x, y, x + width, y + height, bClip)
- rect(img, x, y, width, height, color, bClip)
- end
- end
-
- -- circle cx,cy define center point
- local function circle(img, cx, cy, radius, color, bClip)
- local r = radius
- img:ellipse(cx - r, cy - r, cx + r, cy + r, color, _NIL, bClip)
- end
-
- -- filled circle cx,cy define center, fillcolor is color if left empty
- local function circle_filled(img, cx, cy, radius, color, fillcolor, bClip)
- fillcolor = fillcolor or color
- local r = radius
- img:ellipse(cx - r, cy - r, cx + r, cy + r, color, fillcolor, bClip)
- end
-
- -- ellipse that fits into defined rect
- local function ellipse_rect(img, x1, y1, x2, y2, color, bClip)
- img:ellipse(x1, y1, x2, y2, color, _NIL, bClip)
- end
-
- --ellipse that fits into defined rect, fillcolor is color if left empty
- local function ellipse_rect_filled(img, x1, y1, x2, y2, color, fillcolor, bClip)
- if not fillcolor then fillcolor = color end
-
- img:ellipse(x1, y1, x2, y2, color, fillcolor, bClip)
- end
-
- -- ellipse cx, cy define center point; a, b the major/minor axis
- local function ellipse(img, cx, cy, a, b, color, bClip)
- img:ellipse(cx - a, cy - b, cx + a, cy + b, color, _NIL, bClip)
- end
-
- -- filled ellipse cx, cy define center point; a, b the major/minor axis
- -- fillcolor is color if left empty
- local function ellipse_filled(img, cx, cy, a, b, color, fillcolor, bClip)
- if not fillcolor then fillcolor = color end
-
- img:ellipse(cx - a, cy - b, cx + a, cy + b, color, fillcolor, bClip)
- end
-
- -- rounded rectangle
- local function rounded_rect(img, x, y, w, h, radius, color, bClip)
- local c_img
-
- local function blit(dx, dy, sx, sy, ox, oy)
- img:copy(c_img, dx, dy, sx, sy, ox, oy, bClip, BSAND, color)
- end
-
- if w == 0 or h == 0 then return end
-
- -- limit the radius of the circle otherwise it will overtake the rect
- radius = math.min(w / 2, radius)
- radius = math.min(h / 2, radius)
-
- local r = radius
-
- c_img = rb.new_image(r * 2 + 1, r * 2 + 1)
- c_img:clear(0)
- circle(c_img, r + 1, r + 1, r, 0xFFFFFF)
-
- -- copy 4 pieces of circle to their respective corners
- blit(x, y, _NIL, _NIL, r + 1, r + 1) --TL
- blit(x + w - r - 2, y, r, _NIL, r + 1, r + 1) --TR
- blit(x , y + h - r - 2, _NIL, r, r + 1, _NIL) --BL
- blit(x + w - r - 2, y + h - r - 2, r, r, r + 1, r + 1)--BR
- c_img = _NIL
-
- vline(img, x, y + r, h - r * 2, color, bClip);
- vline(img, x + w - 1, y + r, h - r * 2, color, bClip);
- hline(img, x + r, y, w - r * 2, color, bClip);
- hline(img, x + r, y + h - 1, w - r * 2, color, bClip);
- end
-
- -- rounded rectangle fillcolor is color if left empty
- local function rounded_rect_filled(img, x, y, w, h, radius, color, fillcolor, bClip)
- local c_img
-
- local function blit(dx, dy, sx, sy, ox, oy)
- img:copy(c_img, dx, dy, sx, sy, ox, oy, bClip, BSAND, fillcolor)
- end
-
- if w == 0 or h == 0 then return end
-
- if not fillcolor then fillcolor = color end
-
- -- limit the radius of the circle otherwise it will overtake the rect
- radius = math.min(w / 2, radius)
- radius = math.min(h / 2, radius)
-
- local r = radius
-
- c_img = rb.new_image(r * 2 + 1, r * 2 + 1)
- c_img:clear(0)
- circle_filled(c_img, r + 1, r + 1, r, fillcolor)
-
- -- copy 4 pieces of circle to their respective corners
- blit(x, y, _NIL, _NIL, r + 1, r + 1) --TL
- blit(x + w - r - 2, y, r, _NIL, r + 1, r + 1) --TR
- blit(x, y + h - r - 2, _NIL, r, r + 1, _NIL) --BL
- blit(x + w - r - 2, y + h - r - 2, r, r, r + 1, r + 1) --BR
- c_img = _NIL
-
- -- finish filling areas circles didn't cover
- img:clear(fillcolor, x + r, y, x + w - r, y + h - 1, bClip)
- img:clear(fillcolor, x, y + r, x + r, y + h - r, bClip)
- img:clear(fillcolor, x + w - r, y + r, x + w - 1, y + h - r - 1, bClip)
-
- if fillcolor ~= color then
- rounded_rect(img, x, y, w, h, r, color, bClip)
- end
- end
-
- -- draws an image at xy coord in dest image
- local function image(dst, src, x, y, bClip)
- if not src then --make sure an image was passed, otherwise bail
- rb.splash(rb.HZ, "No Image!")
- return _NIL
- end
-
- dst:copy(src, x, y, 1, 1, _NIL, _NIL, bClip)
- end
-
- -- floods an area of targetclr with fillclr x, y specifies the start seed
- function flood_fill(img, x, y, targetclr, fillclr)
- -- scanline 4-way flood algorithm
- -- ^
- -- <--------x--->
- -- v
- -- check that target color doesn't = fill and the first point is target color
- if targetclr == fillclr or targetclr ~= img:get(x,y, true) then return end
- local max_w = img:width()
- local max_h = img:height()
-
- local qpt = {} -- FIFO queue
- -- rather than moving elements around in our FIFO queue
- -- for each read; increment 'qhead' by 2
- -- set both elements to nil and let the
- -- garbage collector worry about it
- -- for each write; increment 'qtail' by 2
- -- x coordinates are in odd indices while
- -- y coordinates are in even indices
-
- local qtail = 0
- local iter_n; -- North iteration
- local iter_s; -- South iteration
-
- local function check_ns(val, x, y)
- if targetclr == val then
- if targetclr == iter_n() then
- qtail = qtail + 2
- qpt[qtail - 1] = x
- qpt[qtail] = (y - 1)
- end
-
- if targetclr == iter_s() then
- qtail = qtail + 2
- qpt[qtail - 1] = x
- qpt[qtail] = (y + 1)
- end
- return fillclr
- end
- return _NIL -- signal marshal to stop
- end
-
- local function seed_pt(x, y)
- -- will never hit max_w * max_h^2 but make sure not to end early
- for qhead = 2, max_w * max_h * max_w * max_h, 2 do
-
- if targetclr == img:get(x, y, true) then
- iter_n = img:points(x, y - 1, 1, y - 1)
- iter_s = img:points(x, y + 1, 1, y + 1)
- img:marshal(x, y, 1, y, _NIL, _NIL, true, check_ns)
-
- iter_n = img:points(x + 1, y - 1, max_w, y - 1)
- iter_s = img:points(x + 1, y + 1, max_w, y + 1)
- img:marshal(x + 1, y, max_w, y, _NIL, _NIL, true, check_ns)
- end
-
- x = qpt[qhead - 1]
- qpt[qhead - 1] = _NIL
-
- if not x then break end
-
- y = qpt[qhead]
- qpt[qhead] = _NIL
- end
- end
-
- seed_pt(x, y) -- Begin
- end -- flood_fill
-
- -- draws a closed figure based on points in t_points
- local function polygon(img, x, y, t_points, color, fillcolor, bClip)
- if #t_points < 2 then error("not enough points", 3) end
-
- if fillcolor then
- local x_min, x_max = 0, 0
- local y_min, y_max = 0, 0
- local w, h = 0, 0
- -- find boundries of polygon
- for i = 1, #t_points, 1 do
- local pt = t_points[i]
- if pt[1] < x_min then x_min = pt[1] end
- if pt[1] > x_max then x_max = pt[1] end
- if pt[2] < y_min then y_min = pt[2] end
- if pt[2] > y_max then y_max = pt[2] end
- end
- w = math.abs(x_max) + math.abs(x_min)
- h = math.abs(y_max) + math.abs(y_min)
- x_min = x_min - 2 -- leave a border to use flood_fill
- y_min = y_min - 2
-
- local fill_img = rb.new_image(w + 3, h + 3)
- fill_img:clear(0xFFFFFF)
-
- for i = 1, #t_points, 1 do
- local pt1 = t_points[i]
- local pt2 = t_points[i + 1] or t_points[1]-- first and last point
- fill_img:line(pt1[1] - x_min, pt1[2] - y_min,
- pt2[1]- x_min, pt2[2] - y_min, 0)
-
- end
- flood_fill(fill_img, fill_img:width(), fill_img:height() , 1, 0)
- img:copy(fill_img, x - 1, y - 1, _NIL, _NIL, _NIL, _NIL, bClip, BSAND, fillcolor)
- end
-
- polyline(img, x, y, t_points, color, true, bClip)
- end
-
- -- draw text onto image if width/height are supplied text is centered
- local function text(img, x, y, width, height, font, color, text)
- font = font or rb.FONT_UI
-
- local opts = {x = 0, y = 0, width = LCD_W - 1, height = LCD_H - 1,
- font = font, drawmode = 3, fg_pattern = 0xFFFFFF, bg_pattern = 0}
- set_viewport(opts)
-
- local res, w, h = rb.font_getstringsize(text, font)
-
- if not width then
- width = 0
- else
- width = (width - w) / 2
- end
-
- if not height then
- height = 0
- else
- height = (height - h) / 2
- end
-
- -- make a copy of the current screen for later
- local screen_img = rb.new_image(LCD_W, LCD_H)
- screen_img:copy(_LCD)
-
- -- check if the screen buffer is supplied image if so set img to the copy
- if img == _LCD then
- img = screen_img
- end
-
- -- we will be printing the text to the screen then blitting into img
- rb.lcd_clear_display()
-
- local function blit(dx, dy)
- img:copy(_LCD, dx, dy, _NIL, _NIL, _NIL, _NIL, false, BSAND, color)
- end
-
- if w > LCD_W then -- text is too long for the screen do it in chunks
- local l = 1
- local resp, wp, hp
- local lenr = text:len()
-
- while lenr > 1 do
- l = lenr
- resp, wp, hp = rb.font_getstringsize(text:sub(1, l), font)
-
- while wp >= LCD_W and l > 1 do
- l = l - 1
- resp, wp, hp = rb.font_getstringsize(text:sub( 1, l), font)
- end
-
- rb.lcd_putsxy(0, 0, text:sub(1, l))
- text = text:sub(l)
-
- if x + width > img:width() or y + height > img:height() then
- break
- end
-
- -- using the mask we made blit color into img
- blit(x + width, y + height)
- x = x + wp
- rb.lcd_clear_display()
- lenr = text:len()
- end
- else --w <= LCD_W
- rb.lcd_putsxy(0, 0, text)
-
- -- using the mask we made blit color into img
- blit(x + width, y + height)
- end
-
- _LCD:copy(screen_img) -- restore screen
- set_viewport() -- set viewport default
- return res, w, h
- end
-
- -- expose functions to the outside through _draw table
- _draw.image = image
- _draw.text = text
- _draw.line = line
- _draw.hline = hline
- _draw.vline = vline
- _draw.polygon = polygon
- _draw.polyline = polyline
- _draw.rect = rect
- _draw.circle = circle
- _draw.ellipse = ellipse
- _draw.flood_fill = flood_fill
- _draw.ellipse_rect = ellipse_rect
- _draw.rounded_rect = rounded_rect
- -- filled functions use color as fillcolor if fillcolor is left empty...
- _draw.rect_filled = rect_filled
- _draw.circle_filled = circle_filled
- _draw.ellipse_filled = ellipse_filled
- _draw.ellipse_rect_filled = ellipse_rect_filled
- _draw.rounded_rect_filled = rounded_rect_filled
-
- -- adds the above _draw functions into the metatable for RLI_IMAGE
- local ex = getmetatable(rb.lcd_framebuffer())
- for k, v in pairs(_draw) do
- if ex[k] == _NIL then
- ex[k] = v
- end
- end
-
-end -- _draw functions
-
-return _draw