Back-facing Hemisphere

Multiple Rotations

An animated canvas displays a rotating globe. The graticule and sphere are drawn using D3’s geometry pipeline, which applies two sequential rotations—a fixed tilt and a time-based spin—before orthographic projection and clipping. The code uses `d3.geo.pipeline` with `d3.geo.rotate`, `d3.geo.clipCircle`, and `d3.geo.project`, rendering via a `contextSink`. The graticule is generated by `d3.geo.graticule`.

See-Through Globe

A rotating see-through globe displays both the front and back hemispheres simultaneously. The orthographic projection, implemented with `d3.geo.orthographic`, first renders the entire sphere as a light outline, then draws the front-facing land polygons in a darker tone using the `d3.geo.path` API on a Canvas. A graticule overlays the sphere, and the entire scene rotates continuously via a timer. The code loads world-110m GeoJSON data from a gist and relies on `topojson.feature` to extract land polygons.

See-Through Globe II

A rotating orthographic globe displays both its near and far hemispheres through a see-through effect. The code uses `d3.geo.orthographic` with a 90° clip angle, drawing the front-facing land and graticule in dark tones, then flipping the canvas horizontally with `context.scale` and re-projecting with a 180° longitude offset to render the back-facing polygons in lighter colors. The animation runs on a `d3.timer`, with land data from a TopoJSON world-110m file and rendering via Canvas 2D.

Orthographic Shading

An interactive orthographic projection shows Earth’s graticule as a shaded sphere rotating continuously. Latitude and longitude lines at 10° increments form the grid, which is clipped to the visible hemisphere. The animation uses `d3.geo.orthographic()` and `d3.geo.path()` to project the graticule, while a radial gradient fills a circle to simulate lighting. A `d3.timer` updates the projection rotation and the fill’s transform, altering the view over time. The SVG rendering includes subtle stroke opacity for depth.

Orthographic Clipping

An orthographic projection of Earth’s graticule rotates slowly, with a circle marking the visible hemisphere’s boundary. The graticule lines, drawn at 10º latitude and longitude intervals, are clipped at the projection’s 90° limit, while a world map outline from a GeoJSON file is also clipped in the same way. Both the graticule and the map path animate via a timer, using `d3.geo.orthographic()`, `d3.geo.path()`, and `d3.timer` within d3.v3’s SVG rendering.

BBBischof

Orthographic Clipping

A rotating orthographic globe displays a graticule of latitude and longitude lines at uniform 10-degree increments, with a circular clipping boundary. The globe slowly spins via a d3.timer that updates the projection rotation over time. The example uses d3.geo.orthographic with clipAngle(90) and d3.geo.path to render the graticule as an SVG path, while a separate SVG circle outlines the globe’s edge.

73% match

Translucent Earth

This example visualizes Earth as a translucent globe, showing both the front and back hemispheres simultaneously. It uses a custom orthographic backprojection to render the far side of the planet’s landmasses through the sphere, creating a see-through effect. The animation continuously rotates the globe via `d3.timer`, while user drag interaction is enabled through `d3.geoInertiaDrag`. Land data comes from the `world-atlas` TopoJSON, drawn on Canvas with `d3.geoPath` and `d3.geoOrthographic` projection, including graticules and sphere outlines.

PPhilippe Rivière

73% match

Orthographic Grid

An orthographic grid of graticule lines at 10-degree intervals rotates slowly over time, demonstrating an azimuthal projection that resembles a globe viewed from space. The visualization uses D3 v3’s `d3.geo.orthographic`, `d3.geo.path`, and `d3.geo.graticule` to render SVG paths, while a `d3.timer` continuously updates the projection’s rotation based on a fixed velocity vector. A static circle outlines the globe’s edge, and the animation shows how latitude and longitude lines curve as the view shifts.