Emacs: picture-mode, ASCII Diagram
picture-mode lets you draw ASCII diagrams.
To see how to use it:
- Open a new file.
Picture:right mode defined in `picture.el': Switch to Picture mode, in which a quarter-plane screen model is used. Printing characters replace instead of inserting themselves with motion afterwards settable by these commands: Move left after insertion: C-c < Move right after insertion: C-c > Move up after insertion: C-c ^ Move down after insertion: C-c . Move northwest (nw) after insertion: C-c ` Move northeast (ne) after insertion: C-c ' Move southwest (sw) after insertion: C-c / Move southeast (se) after insertion: C-c \ Move westnorthwest (wnw) after insertion: C-u C-c ` Move eastnortheast (ene) after insertion: C-u C-c ' Move westsouthwest (wsw) after insertion: C-u C-c / Move eastsoutheast (ese) after insertion: C-u C-c \ The current direction is displayed in the mode line. The initial direction is right. Whitespace is inserted and tabs are changed to spaces when required by movement. You can move around in the buffer with these commands: Move vertically to SAME column in previous line: C-n Move vertically to SAME column in next line: C-p Move to column following last non-whitespace character: C-e Move right, inserting spaces if required: C-f Move left changing tabs to spaces if required: C-b Move in direction of current picture motion: C-c C-f Move opposite to current picture motion: C-c C-b Move to beginning of next line: C-n You can edit tabular text with these commands: Move to column beneath (or at) next interesting character (see variable `picture-tab-chars'): C-M-i Move to next stop in tab stop list: TAB Set tab stops according to context of this line: C-c TAB (With ARG, resets tab stops to default value.) Change the tab stop list: M-x edit-tab-stops You can manipulate text with these commands: Clear ARG columns after point without moving: C-d Delete char at point: C-c C-d Clear ARG columns backward: DEL Clear ARG lines, advancing over them: C-k (the cleared text is saved in the kill ring) Open blank line(s) beneath current line: C-o You can manipulate rectangles with these commands: Clear a rectangle and save it: C-c C-k Clear a rectangle, saving in a named register: C-c C-w Insert currently saved rectangle at point: C-c C-y Insert rectangle from named register: C-c C-x Draw a rectangular box around mark and point: C-c C-r Copies a rectangle to a register: C-x r r Undo effects of rectangle overlay commands: C-x u You can return to the previous mode with C-c C-c, which also strips trailing whitespace from every line. Stripping is suppressed by supplying an argument. Entry to this mode calls the value of `picture-mode-hook' if non-nil. Note that Picture mode commands will work outside of Picture mode, but they are not by default assigned to keys.
[see Emacs: Edit Column Text, Rectangle Commands]
artist-mode lets you draw ASCII pictures with mouse.
- Left mouse button to draw.
- Right mouse button to erase.
- Middle click to switch to rectangle, ellipse, and other tools.