Perspective figure
Explore figure and head perspective with posable models, construction boxes, camera lenses and vanishing-point guides. Export a drawing reference or transparent overlay.
Art and drawing
Perspective, light, composition, and forms you can turn around. About these tools.
Drawing tools and studies
Newest first
Change a pose, move a light, or turn a shape to see it from another side. Each tool's How it works explains the controls and what the model leaves out.
Light study
Study light and shadow on a white sphere. Adjust light direction, size, reflected light and camera lens, then compare contours, blurred values and value bands.
Composition analyzer
Compare composition grids on photos and artwork. Overlay thirds, golden spirals and diagonals, with optional object-detection alignment scores, not beauty ratings.
Barnstone studio
Compare cage spheres, interlocking bands and an Escher-inspired sphere in one interactive drawing studio, with adjustable geometry and construction guides.
Sphere slicer - Barnstone method
Place angular guides around nested spherical shells and toggle the zones between them. Explore unequal sections, curved boundaries and exposed interiors.
Tetris sphere - Barnstone method
Arrange tetromino blocks around a spherical reference. Change ring count, piece density, scale and elevation to study repetition on a curved surface.
Tetris tetrominoes - Barnstone method
Rotate the seven tetromino shapes as 3D block models. Adjust block size and gaps, compare silhouettes, and inspect perspective with construction guides.
Sphere cutter - Barnstone method
Remove longitude and latitude sections from nested spherical shells. Edit individual layers to study cut surfaces, depth and negative space.
Nested spheres - Barnstone method
Explore concentric spherical bands with adjustable spacing, width and opacity. Compare nested curves, occlusion and construction guides in a 3D drawing reference.
Interlocking bands - Barnstone method
Adjust the thickness, width, radius and gaps of three segmented circular bands. Study apparent overlaps, cross sections and negative space from different views.
Escher sphere - Barnstone method
Explore three perpendicular spherical bands with a 3D grid, cross contours and golden-section reference circles. A geometric drawing study, not an impossible object.
Cage sphere - Barnstone method
Build a spherical cage from horizontal rings and vertical ribs. Adjust its proportions and orbit the model to study ellipses, contours and negative space.
Block builder - Barnstone method
Place and remove cubes on a 3D grid to study stacks, silhouettes and perspective. Export scene data or a vector snapshot of your block construction.
Posable figure
Pose a sculpted figure with named movement controls. Study construction boxes, cut a section through the posed surface, and save a drawing reference or outline.