X-Git-Url: http://git.rot13.org/?p=perl-landing-airplanes.git;a=blobdiff_plain;f=trace-path.pl;h=9a6e86571a2983a8488af31ddaf61f06fb55784b;hp=6239d135ae177554af0c0834432542805225607d;hb=refs%2Fheads%2Fmaster;hpb=add37d97a20a4c69142fe977738f694a791c156e;ds=sidebyside diff --git a/trace-path.pl b/trace-path.pl index 6239d13..9a6e865 100755 --- a/trace-path.pl +++ b/trace-path.pl @@ -10,10 +10,14 @@ use SDL::Constants; use SDL::Event; use Math::CatmullRom; use Algorithm::Line::Bresenham qw(line); +use Math::Bezier; use Carp qw(cluck); use Data::Dump qw(dump); +use Airplane; +our @airplanes; + our $debug = 0; my ( $w, $h ) = ( 800, 480 ); @@ -30,11 +34,6 @@ sub debug { warn '# ', dump( @_ ), " $filename +$line\n"; } -my $mask = SDL::Surface->new( - -name => 'artwork/world1/a-mask.png', - -depth => 24, -); - our $app = SDL::App->new( -width => $w, -height => $h, @@ -43,34 +42,79 @@ our $app = SDL::App->new( -title => 'Trace mouse', ); -our $app_rect = SDL::Rect->new( -x => 0, -y => 0, -width => $w, -height => $h ); -$mask->blit( $mask->rect, $app, $app_rect ); -$app->sync; +our @masks; +our @landings; +foreach my $path ( glob 'artwork/world1/*mask*.png' ) { + warn "mask $path ", -s $path, " bytes\n"; -my @landing; + my $mask = SDL::Surface->new( + -name => $path, + -depth => 24, + ); + push @masks, $mask; -my $mask_step = 10; + $mask->blit( $mask->rect, $app ); + $app->sync; -my $y = 0; -foreach ( 0 .. $mask->height / $mask_step ) { - printf "%3d: ", $_; - my $x = 0; - foreach ( 0 .. $mask->width / $mask_step ) { - my $col = $mask->pixel( $x, $y ); - my $nr = 0; - $nr += 4 if $col->r; - $nr += 2 if $col->g; - $nr += 1 if $col->b; - $landing[$nr] = [ $x, $y ] unless defined $landing[$nr]; - printf "%02x%02x%02x:%d ", $col->r, $col->g, $col->b, $nr; - $x += $mask_step; + my @landing; + my $mask_step = 10; + + my $y = 0; + foreach ( 0 .. $mask->height / $mask_step ) { + printf "%3d: ", $_; + my $x = 0; + foreach ( 0 .. $mask->width / $mask_step ) { + my $col = $mask->pixel( $x, $y ); + my $nr = 0; + $nr += 4 if $col->r; + $nr += 2 if $col->g; + $nr += 1 if $col->b; + $landing[$nr] = [ $x, $y ] unless defined $landing[$nr]; + printf "%02x%02x%02x:%d ", $col->r, $col->g, $col->b, $nr; + $x += $mask_step; + } + print "\n"; + $y += $mask_step; } - print "\n"; - $y += $mask_step; + + warn "lading for $path ",dump(@landing); + + push @landings, [ @landing ]; +} + +my $current_mask = 0; + +warn "# masks ",dump(@masks), " landings ", dump(@landings); + +sub mask_hex { + my ( $i, $x, $y ) = @_; + + my $col = $masks[$i]->pixel( $x, $y ); + my $hex = sprintf '%02x%02x%02x', $col->r, $col->g, $col->b; + warn "mask $x $y $hex\n"; + return $hex; } -warn 'lading ',dump(@landing); +sub lading_points { + my ( $x, $y ) = @_; + my @points; + foreach my $i ( 0 .. $#masks ) { + my $hex = mask_hex( $i, $x, $y ); + if ( $hex eq '000000' ) { + warn "lading point $x $y from mask $i hex $hex\n"; + foreach ( 1 .. 6 ) { + push @points, + $landings[$i]->[$_]->[0], + $landings[$i]->[$_]->[1]; + } + } else { + debug $x, $y, $i, $hex, 'ignored'; + } + warn "mask $i points ",dump( @points ); + } + return @points; +} our $event = SDL::Event->new; @@ -81,17 +125,7 @@ my ( $last_x, $last_y ) = ( 0,0 ); our @path; sub reset_path { @path = () } -sub curve { - - my $mask_col = $mask->pixel( $path[-2], $path[-1] ); - my $mask_hex = sprintf '%02x%02x%02x', $mask_col->r, $mask_col->g, $mask_col->b; - warn "mask $path[-2] $path[1] $mask_hex\n"; - - if ( $mask_hex eq '000000' ) { # push landing point at path end - foreach ( 1 .. 6 ) { - push @path, $landing[$_]->[0], $landing[$_]->[1]; - } - } +sub curve_catmull_rom { if ( $#path < ( 4 * 2 - 1 ) ) { # less than 4 points warn "path too short ", dump @path; @@ -101,7 +135,23 @@ sub curve { my $curve = Math::CatmullRom->new( @path ); my $points = $#path + 1 - 4; # remove start/end points - my @curve = $curve->curve( $points ); + return $curve->curve( $points ); +} + +sub curve_bezier { + my $curve = Math::Bezier->new( @path ); + return $curve->curve( $#path + 1 ); +} + +our $curve_type = 0; + +sub curve { + # add landing path points + push @path, lading_points( $path[-2], $path[-1] ) if $#path > 1; + + my $type = 1; + + my @curve = $curve_type ? curve_catmull_rom : curve_bezier; debug 'curve' => @curve; my $i = 0; @@ -115,12 +165,29 @@ sub curve { ); } $app->sync; + + push @airplanes, Airplane->new( $app ); + $airplanes[-1]->set_path( @curve ); reset_path; } +sub clear_screen { + my ( $mask ) = @_; + reset_path; + $app->fill( $app->rect, $black ); + if ( defined $mask ) { + warn "clear_screen $mask"; + $masks[$current_mask]->blit( $masks[$current_mask]->rect, $app, $app->rect ); + } else { + warn "clear_screen all masks"; + $_->blit( $_->rect, $app, $app->rect ) foreach @masks; + } + $app->sync; +} + sub handle_events { - while ( $event->wait ) { + while ( $event->poll ) { my $type = $event->type(); if ( $type == SDL_MOUSEBUTTONDOWN() ) { @@ -129,25 +196,26 @@ sub handle_events { } elsif ( $type == SDL_MOUSEBUTTONUP() ) { debug 'mouse up', $event->button_x, $event->button_y; $mouse_down = 0; - curve; } elsif ( $type == SDL_QUIT() ) { exit; } elsif ( $type == SDL_KEYDOWN() ) { my $key = $event->key_name; - debug 'key down', $key; + warn 'key down', $key, $/; exit if $key =~ m/^[xq]$/; if ( $key eq 's' ) { # XXX draw curve curve; } elsif ( $key eq 'backspace' || $key eq 'c' ) { # XXX clean screen - reset_path; - $app->fill( $app->rect, $black ); -# $app->update( $rect ); - $mask->blit( $mask->rect, $app, $app_rect ); - $app->sync; + clear_screen; } elsif ( $key eq 'd' ) { # XXX toggle debug $debug = ! $debug; warn "debug $debug\n"; + } elsif ( $key eq 'm' ) { # XXX cycle masks + $current_mask++; + $current_mask = 0 if $current_mask > $#masks; + clear_screen $current_mask; + } elsif ( $key eq 't' ) { # XXX curve type + $curve_type = ! $curve_type; } else { warn "unknown key $key"; } @@ -164,7 +232,7 @@ sub handle_events { $app->fill( $rect, $mouse_color ); $app->update( $rect ); $last_x = $x; - $last_y = $y; + $last_y = $y; } else { $mouse_down = 0; curve; @@ -178,8 +246,9 @@ sub handle_events { while(1) { handle_events; + $_->draw foreach @airplanes; + $app->delay(50); $app->sync; - $app->delay(1); } 1;