view_camera Function

private function view_camera(self, x, y, cam) result(ok)

The pick camera of the view shown, with the cursor at (x, y) (-1 to 1, y up) and no tolerance. False before the first frame (or closed).

Arguments

Type IntentOptional Attributes Name
class(WindowProxy), intent(in) :: self
real(kind=wp), intent(in) :: x

the cursor: -1 to 1 across the window, y up
real(kind=wp), intent(in) :: y

the cursor: -1 to 1 across the window, y up
type(PickCamera), intent(out) :: cam

the view's camera, the cursor there

Return Value logical


Calls

proc~~view_camera~~CallsGraph proc~view_camera view_camera interface~vkf_viewer_pixel_ratio vkf_viewer_pixel_ratio proc~view_camera->interface~vkf_viewer_pixel_ratio interface~vkf_viewer_size vkf_viewer_size proc~view_camera->interface~vkf_viewer_size proc~aspect_ratio aspect_ratio proc~view_camera->proc~aspect_ratio proc~field_of_view View%field_of_view proc~view_camera->proc~field_of_view proc~get_camera WindowProxy%get_camera proc~view_camera->proc~get_camera proc~is_open WindowProxy%is_open proc~view_camera->proc~is_open proc~orthographic_bounds View%orthographic_bounds proc~view_camera->proc~orthographic_bounds proc~pick_camera pick_camera proc~view_camera->proc~pick_camera proc~projection_type View%projection_type proc~view_camera->proc~projection_type proc~aspect_ratio->interface~vkf_viewer_size proc~get_camera->proc~is_open interface~vkf_viewer_get_look_at vkf_viewer_get_look_at proc~get_camera->interface~vkf_viewer_get_look_at proc~rigid_inverse rigid_inverse proc~get_camera->proc~rigid_inverse proc~transform_camera transform_camera proc~get_camera->proc~transform_camera proc~world_to_view View%world_to_view proc~get_camera->proc~world_to_view proc~cross cross proc~pick_camera->proc~cross proc~world_to_view->proc~rigid_inverse proc~frame_to_root frame_to_root proc~world_to_view->proc~frame_to_root proc~identity_matrix identity_matrix proc~world_to_view->proc~identity_matrix proc~quat_from_vectors quat_from_vectors proc~world_to_view->proc~quat_from_vectors proc~quat_to_matrix quat_to_matrix proc~world_to_view->proc~quat_to_matrix proc~rotated rotated proc~world_to_view->proc~rotated proc~translation_matrix translation_matrix proc~world_to_view->proc~translation_matrix proc~frame_to_root->proc~rigid_inverse proc~world_matrix ReferenceFrame%world_matrix proc~frame_to_root->proc~world_matrix proc~quat_from_vectors->proc~cross proc~quat_normalize quat_normalize proc~quat_from_vectors->proc~quat_normalize proc~translation_matrix->proc~identity_matrix proc~world_matrix->proc~world_matrix proc~local_matrix ReferenceFrame%local_matrix proc~world_matrix->proc~local_matrix proc~frame_matrix frame_matrix proc~local_matrix->proc~frame_matrix proc~frame_matrix->proc~quat_to_matrix

Called by

proc~~view_camera~~CalledByGraph proc~view_camera view_camera proc~cursor_ray WindowProxy%cursor_ray proc~cursor_ray->proc~view_camera proc~screen_position WindowProxy%screen_position proc~screen_position->proc~view_camera proc~window_pick WindowProxy%window_pick proc~window_pick->proc~view_camera proc~drag_handle drag_handle proc~drag_handle->proc~cursor_ray proc~grab_handle grab_handle proc~grab_handle->proc~cursor_ray proc~hover_handle hover_handle proc~hover_handle->proc~window_pick proc~dispatch_event dispatch_event proc~dispatch_event->proc~drag_handle proc~dispatch_event->proc~grab_handle proc~dispatch_event->proc~hover_handle proc~release_handle release_handle proc~dispatch_event->proc~release_handle proc~release_handle->proc~hover_handle proc~dispatch_events dispatch_events proc~dispatch_events->proc~dispatch_event proc~frame WindowProxy%frame proc~frame->proc~dispatch_events proc~resize WindowProxy%resize proc~resize->proc~frame proc~run WindowProxy%run proc~run->proc~frame

Source Code

    logical function view_camera(self, x, y, cam) result(ok)
        class(WindowProxy), intent(in) :: self
        real(wp), intent(in) :: x, y                        !! the cursor: -1 to 1 across the window, y up
        type(PickCamera), intent(out) :: cam                !! the view's camera, the cursor there
        real(wp) :: eye(3), center(3), up(3)
        integer(c_int) :: width, height
        ok = .false.
        if (.not. self%is_open() .or. .not. associated(self%shown)) return
        if (vkf_viewer_size(self%viewer_, width, height) /= 0) return
        call self%get_camera(eye, center, up, in_root=.true.)
        cam = pick_camera(eye, center, up, self%shown%projection_type() == PERSPECTIVE, self%shown%field_of_view(), &
                          aspect_ratio(self), self%shown%orthographic_bounds(), int(width), int(height), x, y, 0.0_wp)
        cam%pixel_ratio = vkf_viewer_pixel_ratio(self%viewer_)
        ok = .true.
    end function view_camera