Keep objects vertical in 3D preview
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ed0344e861
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1 changed files with 18 additions and 7 deletions
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@ -13,15 +13,19 @@ use Wx::GLCanvas qw(:all);
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__PACKAGE__->mk_accessors( qw(quat dirty init mview_init
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mesh_center mesh_size
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verts norms initpos) );
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verts norms initpos
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sphi stheta) );
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use constant TRACKBALLSIZE => 0.8;
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use constant TURNTABLE_MODE => 1;
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sub new {
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my ($class, $parent, $mesh) = @_;
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my $self = $class->SUPER::new($parent);
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$self->quat((0, 0, 0, 1));
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$self->sphi(45);
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$self->stheta(-45);
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# prepare mesh
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{
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@ -189,12 +193,17 @@ sub handle_rotation {
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my $orig = $self->initpos;
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my $new = $e->GetPosition();
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my $size = $self->GetClientSize();
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my @quat = trackball($orig->x / ($size->width / 2) - 1,
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1 - $orig->y / ($size->height / 2), #/
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$new->x / ($size->width / 2) - 1,
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1 - $new->y / ($size->height / 2), #/
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);
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$self->quat(mulquats($self->quat, \@quat));
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if (TURNTABLE_MODE) {
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$self->sphi($self->sphi + ($new->x - $orig->x)*TRACKBALLSIZE);
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$self->stheta($self->stheta + ($new->y - $orig->y)*TRACKBALLSIZE); #-
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} else {
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my @quat = trackball($orig->x / ($size->width / 2) - 1,
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1 - $orig->y / ($size->height / 2), #/
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$new->x / ($size->width / 2) - 1,
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1 - $new->y / ($size->height / 2), #/
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);
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$self->quat(mulquats($self->quat, \@quat));
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}
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$self->initpos($new);
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$self->Refresh;
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}
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@ -344,6 +353,8 @@ sub Render {
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glTranslatef(0, 0, -max(@$mesh_size[0..1]));
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my @rotmat = quat_to_rotmatrix($self->quat);
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glMultMatrixd_p(@rotmat[0..15]);
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glRotatef($self->stheta, 1, 0, 0);
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glRotatef($self->sphi, 0, 0, 1);
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glTranslatef(map -$_, @{ $self->mesh_center });
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$self->draw_mesh;
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