diff options
Diffstat (limited to 'lib/percept')
| -rw-r--r-- | lib/percept/src/egd_render.erl | 66 |
1 files changed, 29 insertions, 37 deletions
diff --git a/lib/percept/src/egd_render.erl b/lib/percept/src/egd_render.erl index faa00ddb55..da451c7e2e 100644 --- a/lib/percept/src/egd_render.erl +++ b/lib/percept/src/egd_render.erl @@ -267,13 +267,13 @@ object_line_data(#image_object{type=filled_rectangle, object_line_data(#image_object{type=filled_ellipse, internals={Xr,Yr,Yr2}, span={X0,Y0,X1,Y1}, color=C}, Y, Z) -> if - X1 - X0 == 0; Y1 - Y0 == 0 -> - [{Z, X0, X1, C}]; - true -> - Yo = trunc(Y - Y0 - Yr), - Yo2 = Yo*Yo, - Xo = math:sqrt((1 - Yo2/Yr2))*Xr, - [{Z, round(X0 - Xo + Xr), round(X0 + Xo + Xr), C}] + X1 - X0 =:= 0; Y1 - Y0 =:= 0 -> + [{Z, X0, X1, C}]; + true -> + Yo = trunc(Y - Y0 - Yr), + Yo2 = Yo*Yo, + Xo = math:sqrt((1 - Yo2/Yr2))*Xr, + [{Z, round(X0 - Xo + Xr), round(X0 + Xo + Xr), C}] end; object_line_data(#image_object{type=filled_triangle, @@ -311,40 +311,32 @@ is_object_on_line(#image_object{span={_,Y0,_,Y1}}, Y) -> %% compile objects to linespans -precompile(Image = #image{ objects = Os }) -> - Image#image{ objects = precompile_objects(Os) }. - -precompile_objects(Os) -> precompile_objects(Os, []). -precompile_objects([], Out) -> lists:reverse(Out); - -precompile_objects([O = #image_object{ type = line, points = [P0,P1] }| Os], Out) -> - precompile_objects(Os, [O#image_object{ intervals = ls_list2dict(line_ls(P0,P1)) } | Out]); - -precompile_objects([O = #image_object{ type = filled_triangle, points = [P0,P1,P2] } | Os], Out) -> - precompile_objects(Os, [O#image_object{ intervals = triangle_ls(P0,P1,P2) } | Out]); - -precompile_objects([O = #image_object{ type = polygon, points = Pts } | Os], Out) -> - precompile_objects(Os, [O#image_object{ intervals = polygon_ls(Pts) } | Out]); - -precompile_objects([O = #image_object{ type = filled_ellipse, span = {X0,Y0,X1,Y1} } | Os], Out) -> +precompile(#image{objects = Os}=I) -> + I#image{objects = precompile_objects(Os)}. + +precompile_objects([]) -> []; +precompile_objects([#image_object{type=line, points=[P0,P1]}=O|Os]) -> + [O#image_object{intervals = ls_list2dict(line_ls(P0,P1))}|precompile_objects(Os)]; +precompile_objects([#image_object{type=filled_triangle, points=[P0,P1,P2]}=O|Os]) -> + [O#image_object{intervals = triangle_ls(P0,P1,P2)}|precompile_objects(Os)]; +precompile_objects([#image_object{type=polygon, points=Pts}=O|Os]) -> + [O#image_object{intervals = polygon_ls(Pts)}|precompile_objects(Os)]; +precompile_objects([#image_object{type=filled_ellipse, span={X0,Y0,X1,Y1}}=O|Os]) -> Xr = (X1 - X0)/2, Yr = (Y1 - Y0)/2, Yr2 = Yr*Yr, - precompile_objects(Os, [ O#image_object{ internals={Xr,Yr,Yr2} } | Out]); - -precompile_objects([O = #image_object{ type = arc, points = [P0,P1], internals = D }| Os], Out) -> + [O#image_object{internals={Xr,Yr,Yr2}}|precompile_objects(Os)]; +precompile_objects([#image_object{type=arc, points=[P0,P1], internals=D}=O|Os]) -> Es = egd_primitives:arc_to_edges(P0, P1, D), - Ls = lists:foldl(fun - ({Ep0, Ep1}, D0) -> - ls_list2dict(line_ls(Ep0, Ep1), D0) - end, dict:new(), Es), - precompile_objects(Os, [O#image_object{ type = line, intervals = Ls } | Out]); - -precompile_objects([O = #image_object{ type = text_horizontal, points = [P0], internals = {Font, Text}} | Os], Out) -> - precompile_objects(Os, [O#image_object{ intervals = text_horizontal_ls(P0, Font, Text) } | Out]); - -precompile_objects([O|Os], Out) -> - precompile_objects(Os, [O|Out]). + Ls = lists:foldl(fun ({Ep0, Ep1}, D0) -> + ls_list2dict(line_ls(Ep0, Ep1), D0) + end, dict:new(), Es), + [O#image_object{type=line, intervals=Ls}|precompile_objects(Os)]; +precompile_objects([#image_object{type=text_horizontal, + points=[P0], internals={Font,Text}}=O|Os]) -> + [O#image_object{intervals=text_horizontal_ls(P0,Font,Text)}|precompile_objects(Os)]; +precompile_objects([O|Os]) -> + [O|precompile_objects(Os)]. % triangle |