our $mouse_down = 0;
-our $mouse_color = SDL::Color->new( 0x00, 0x80, 0x00 );
-our $path_color = SDL::Color->new( 0xff, 0x00, 0x00 );
+our $mouse_color = SDL::Color->new( 0x00, 0x00, 0x80 );
+our $path_color = SDL::Color->new( 0xff, 0xff, 0x80 );
our $black = SDL::Color->new( 0x00, 0x00, 0x00 );
my ( $last_x, $last_y ) = ( 0,0 );
}
my $curve = Math::CatmullRom->new( @path );
- my @curve = $curve->curve( $mouse_trashold * 10 );
+ my $points = $#path + 1 - 4; # remove start/end points
+ my @curve = $curve->curve( $points );
debug 'curve' => @curve;
my $i = 0;
- while ( $i < $#curve - 4 ) {
- my $from_x = int($curve[$i++]);
- my $from_y = int($curve[$i++]);
- my $to_x = int($curve[$i++]);
- my $to_y = int($curve[$i++]);
+ while ( $i <= $#curve - 4 ) {
line(
int($curve[$i++]),
int($curve[$i++]),
} elsif ( $type == SDL_MOUSEMOTION() ) {
my ( $x, $y ) = ( $event->motion_x, $event->motion_y );
#debug 'mouse', $mouse_down, $x, $y;
- my $dx = abs( $last_x - $x );
- my $dy = abs( $last_y - $y );
- if ( $mouse_down && ( $dx > $mouse_trashold || $dy > $mouse_trashold ) ) {
+ my $d = sqrt( ( $x - $last_x ) ** 2 + ( $y - $last_y ) ** 2 );
+ if ( $mouse_down && $d > $mouse_trashold ) {
if ( $#path < $max_path_length ) {
push @path, $x, $y;
my $rect = SDL::Rect->new( -x => $event->motion_x - 1, -y => $event->motion_y -1 , -w => 3, -h => 3 );