{"header":{"message":"new mode: circle arc","description":"We start out drawing a circle, but instead of releasing the mouse we hit\n'a'.","timestamp":"2022-05-15T05:24:53Z","authors":[{"email":"vc@akkartik.com","name":"Kartik K. Agaram"}]},"hash":"ZOOY3ME4BUD6RLWCKZFA62JNN4BMPOXH24HGTFWPWEKDECOXMFUAC","authors":[],"deps":{"hashes":[["ZOOY3ME4BUD6RLWCKZFA62JNN4BMPOXH24HGTFWPWEKDECOXMFUAC","new mode: circle arc"],["AA",null],["FMQ74DP324YKGBSTNMHBJMT6FYP5NI26MM43VUPGKODI5DVDCUXQC","new mode: circle"],["OTIBCAUJ3KDQJLVDN3A536DLZGNRYMGJLORZVR3WLCGXGO6UGO6AC","love2d scaffold"],["JCSLDGAH2F6AIY4Z6XM6K4LOMW7EFY3E4NF5YXLMHLTYTX3A4Z3QC","beginnings of support for multiple shapes"],["NL5J7Z5H577GPKGNS5TDRVWC55VLA2UCZE34F5WR4AJ5N265UECAC","new mode: polygon"],["6LJZN727CRPYR34LV75CQF55YZI3E7MGESYZSFSYAE73SNEZE3FAC","handle chords"],["H7OEU6WPOKOSKV5RNAM5W62V5SYOY7VEA5VOK6JD5UEBUBIMOKUQC","experimental approach to combining keyboard and mouse while drawing"]],"deps":["FMQ74DP324YKGBSTNMHBJMT6FYP5NI26MM43VUPGKODI5DVDCUXQC"],"known":[]},"hunks":[{"Edit":{"inode":{"change":4,"pos":2},"path":"main.lua","line":185,"atom":{"NewVertex":{"up_context":[{"change":2,"pos":427}],"down_context":[{"change":5,"pos":1962}],"flag":"BLOCK","start":3,"end":466,"inode":{"change":4,"pos":2}}},"contents":[{"Add":" elseif lines.current.pending.mode == 'arc' then"},{"Add":" local mx,my = coord(x-16), coord(y-lines.current.y)"},{"Add":" if mx >= 0 and mx < 256 and my >= 0 and my < lines.current.h then"},{"Add":" local center = lines.current.points[lines.current.pending.center]"},{"Add":" lines.current.pending.end_angle = angle_with_hint(center.x,center.y, mx,my, lines.current.pending.end_angle)"},{"Add":" table.insert(lines.current.shapes, lines.current.pending)"},{"Add":" end"}]}},{"Edit":{"inode":{"change":4,"pos":2},"path":"main.lua","line":266,"atom":{"NewVertex":{"up_context":[{"change":2,"pos":798}],"down_context":[{"change":5,"pos":2834}],"flag":"BLOCK","start":467,"end":741,"inode":{"change":4,"pos":2}}},"contents":[{"Add":" elseif shape.mode == 'arc' then"},{"Add":" local center = drawing.points[shape.center]"},{"Add":" love.graphics.arc('line', 'open', pixels(center.x)+left,pixels(center.y)+top, pixels(shape.radius), shape.start_angle, shape.end_angle, 360)"},{"Add":" else"},{"Add":" print(shape.mode)"},{"Add":" assert(false)"}]}},{"Edit":{"inode":{"change":4,"pos":2},"path":"main.lua","line":316,"atom":{"NewVertex":{"up_context":[{"change":2,"pos":1205}],"down_context":[{"change":5,"pos":3110}],"flag":"BLOCK","start":742,"end":1239,"inode":{"change":4,"pos":2}}},"contents":[{"Add":" elseif shape.mode == 'arc' then"},{"Add":" local center = drawing.points[shape.center]"},{"Add":" local mx,my = coord(love.mouse.getX()-16), coord(love.mouse.getY()-drawing.y)"},{"Add":" if mx < 0 or mx >= 256 or my < 0 or my >= drawing.h then"},{"Add":" return"},{"Add":" end"},{"Add":" shape.end_angle = angle_with_hint(center.x,center.y, mx,my, shape.end_angle)"},{"Add":" local cx,cy = pixels(center.x)+left, pixels(center.y)+top"},{"Add":" love.graphics.arc('line', 'open', cx,cy, pixels(shape.radius), shape.start_angle, shape.end_angle, 360)"}]}},{"Edit":{"inode":{"change":4,"pos":2},"path":"main.lua","line":340,"atom":{"NewVertex":{"up_context":[{"change":2,"pos":1352}],"down_context":[{"change":5,"pos":3287}],"flag":"BLOCK","start":1240,"end":1549,"inode":{"change":4,"pos":2}}},"contents":[{"Add":" elseif shape.mode == 'arc' then"},{"Add":" local center = drawing.points[shape.center]"},{"Add":" local dist = math.dist(center.x,center.y, x,y)"},{"Add":" if dist < shape.radius*0.95 or dist > shape.radius*1.05 then"},{"Add":" return false"},{"Add":" end"},{"Add":" return angle_between(center.x,center.y, x,y, shape.start_angle,shape.end_angle)"}]}},{"Edit":{"inode":{"change":4,"pos":2},"path":"main.lua","line":409,"atom":{"NewVertex":{"up_context":[{"change":6,"pos":1934}],"down_context":[{"change":7,"pos":23}],"flag":"BLOCK","start":1550,"end":2004,"inode":{"change":4,"pos":2}}},"contents":[{"Add":"function angle_between(x1,y1, x2,y2, s,e)"},{"Add":" local angle = math.angle(x1,y1, x2,y2)"},{"Add":"--? print(s,e, angle-math.pi*2, angle, angle+math.pi*2)"},{"Add":" if s > e then"},{"Add":" s,e = e,s"},{"Add":" end"},{"Add":" -- I'm not sure this is right or ideal.."},{"Add":" angle = angle-math.pi*2"},{"Add":" if s <= angle and angle <= e then"},{"Add":" return true"},{"Add":" end"},{"Add":" angle = angle+math.pi*2"},{"Add":" if s <= angle and angle <= e then"},{"Add":" return true"},{"Add":" end"},{"Add":" angle = angle+math.pi*2"},{"Add":" return s <= angle and angle <= e"},{"Add":"end"},{"Add":""}]}},{"Edit":{"inode":{"change":4,"pos":2},"path":"main.lua","line":463,"atom":{"NewVertex":{"up_context":[{"change":2,"pos":1410}],"down_context":[{"change":8,"pos":141}],"flag":"BLOCK","start":2005,"end":2485,"inode":{"change":4,"pos":2}}},"contents":[{"Add":" elseif love.mouse.isDown('1') and chord == 'a' and current_mode == 'circle' then"},{"Add":" local drawing = current_drawing()"},{"Add":" drawing.pending.mode = 'arc'"},{"Add":" local mx,my = coord(love.mouse.getX()-16), coord(love.mouse.getY()-drawing.y)"},{"Add":" local j = insert_point(drawing.points, mx,my)"},{"Add":" local center = drawing.points[drawing.pending.center]"},{"Add":" drawing.pending.radius = math.dist(center.x,center.y, mx,my)"},{"Add":" drawing.pending.start_angle = math.angle(center.x,center.y, mx,my)"}]}},{"Edit":{"inode":{"change":4,"pos":2},"path":"main.lua","line":594,"atom":{"NewVertex":{"up_context":[{"change":7,"pos":371}],"down_context":[{"change":7,"pos":460}],"flag":"BLOCK","start":2486,"end":3164,"inode":{"change":4,"pos":2}}},"contents":[{"Add":"end"},{"Add":""},{"Add":"function angle_with_hint(x1, y1, x2, y2, hint)"},{"Add":" local result = math.angle(x1,y1, x2,y2)"},{"Add":" if hint then"},{"Add":" -- Smooth the discontinuity where angle goes from positive to negative."},{"Add":" -- The hint is a memory of which way we drew it last time."},{"Add":" while result > hint+math.pi/10 do"},{"Add":" result = result-math.pi*2"},{"Add":" end"},{"Add":" while result < hint-math.pi/10 do"},{"Add":" result = result+math.pi*2"},{"Add":" end"},{"Add":" end"},{"Add":" return result"},{"Add":"end"},{"Add":""},{"Add":"-- result is from -π/2 to 3π/2, approximately adding math.atan2 from Lua 5.3"},{"Add":"-- (LÖVE is Lua 5.1)"},{"Add":"function math.angle(x1,y1, x2,y2)"},{"Add":" local result = math.atan((y2-y1)/(x2-x1))"},{"Add":" if x2 < x1 then"},{"Add":" result = result+math.pi"},{"Add":" end"},{"Add":" return result"}]}}],"owner":"akkartik","repo":"sum-grid.love","token":"TBAV0QanN8N5Ftz3Y4ST5pkl40TqZgL8jH4ktN/dKnc=","login":null}

…

Dependencies

Change contents