diff options
Diffstat (limited to 'lib/percept/src/egd_render.erl')
| -rw-r--r-- | lib/percept/src/egd_render.erl | 51 |
1 files changed, 28 insertions, 23 deletions
diff --git a/lib/percept/src/egd_render.erl b/lib/percept/src/egd_render.erl index 8ee41b66ab..faa00ddb55 100644 --- a/lib/percept/src/egd_render.erl +++ b/lib/percept/src/egd_render.erl @@ -216,11 +216,11 @@ parse_objects_on_line(Y, Width, Objects) -> parse_objects_on_line(Y, 1, Width, Objects, []). parse_objects_on_line(_Y, _Z, _, [], Out) -> lists:flatten(Out); parse_objects_on_line(Y, Z, Width, [O|Os], Out) -> - case is_object_on_line(Y, O) of + case is_object_on_line(O, Y) of false -> parse_objects_on_line(Y, Z + 1, Width, Os, Out); true -> - OLs = object_line_data(Y, Z, O), + OLs = object_line_data(O,Y,Z), TOLs = trim_object_line_data(OLs, Width), parse_objects_on_line(Y, Z + 1, Width, Os, [TOLs|Out]) end. @@ -238,9 +238,9 @@ trim_object_line_data([{Z, Xl, Xr, C}|OLs], Width, Out) -> % object_line_data % In: +% Object :: image_object() % Y :: index of height % Z :: index of depth -% Object :: image_object() % Out: % OLs = [{Z, Xl, Xr, Color}] % Z = index of height @@ -250,21 +250,22 @@ trim_object_line_data([{Z, Xl, Xr, C}|OLs], Width, Out) -> % Calculate the length (start and finish index) of an objects horizontal % line given the height index. -object_line_data(Y, Z, Object) -> - object_line_data(Y, Z, Object, Object#image_object.type). -object_line_data(Y, Z, #image_object{ span = {X0, Y0, X1, Y1}, color = C}, rectangle) -> +object_line_data(#image_object{type=rectangle, + span={X0,Y0,X1,Y1}, color=C}, Y, Z) -> if - Y0 =:= Y ; Y1 =:= Y -> - [{Z, X0, X1, C}]; - true -> - [{Z, X0, X0, C}, - {Z, X1, X1, C}] + Y0 =:= Y ; Y1 =:= Y -> + [{Z, X0, X1, C}]; + true -> + [{Z, X0, X0, C}, + {Z, X1, X1, C}] end; -object_line_data(_Y, Z, #image_object{ span = {X0, _, X1, _}, color = C}, filled_rectangle) -> +object_line_data(#image_object{type=filled_rectangle, + span={X0, _, X1, _}, color=C}, _Y, Z) -> [{Z, X0, X1, C}]; -object_line_data(Y, Z, #image_object{ internals={Xr,Yr,Yr2}, span = {X0,Y0,X1,Y1}, color = C}, filled_ellipse) -> +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}]; @@ -275,33 +276,37 @@ object_line_data(Y, Z, #image_object{ internals={Xr,Yr,Yr2}, span = {X0,Y0,X1,Y1 [{Z, round(X0 - Xo + Xr), round(X0 + Xo + Xr), C}] end; -object_line_data(Y, Z, #image_object{ intervals = Is, color = C}, filled_triangle) -> +object_line_data(#image_object{type=filled_triangle, + intervals=Is, color=C}, Y, Z) -> case lists:keyfind(Y, 1, Is) of {Y, Xl, Xr} -> [{Z, Xl, Xr, C}]; false -> [] end; -object_line_data(Y, Z, #image_object{ intervals = Is, color = C}, line) -> +object_line_data(#image_object{type=line, + intervals=Is, color=C}, Y, Z) -> case dict:find(Y, Is) of {ok, Ls} -> [{Z, Xl, Xr, C}||{Xl,Xr} <- Ls]; _ -> [] end; -object_line_data(Y, Z, #image_object{ color = C, intervals = Is}, polygon) -> +object_line_data(#image_object{type=polygon, + color=C, intervals=Is}, Y, Z) -> [{Z, Xl, Xr, C} || {Yp, Xl, Xr} <- Is, Yp =:= Y]; -object_line_data(Y, Z, #image_object{ color = C, intervals = Is}, text_horizontal) -> +object_line_data(#image_object{type=text_horizontal, + color=C, intervals=Is}, Y, Z) -> [{Z, Xl, Xr, C} || {Yg, Xl, Xr} <- Is, Yg =:= Y]; -object_line_data(_, Z, #image_object{ span = {X0,_,X1,_}, color = C}, _) -> +object_line_data(#image_object{type=pixel, + span={X0,_,X1,_}, color=C}, _, Z) -> [{Z, X0, X1, C}]. -is_object_on_line(Y, #image_object{ span = Span }) -> - is_object_bounds_on_line(Y, Span). +is_object_on_line(#image_object{span={_,Y0,_,Y1}}, Y) -> + if Y < Y0; Y > Y1 -> false; + true -> true + end. -is_object_bounds_on_line(Y, {_,Y0,_,Y1}) when Y < Y0 ; Y > Y1 -> false; -is_object_bounds_on_line(_, _) -> true. - %%% primitives to line_spans %% compile objects to linespans |