TikZphysics – TikZ-native shapes and anchors for classical physics diagrams

The package extends TikZ with reusable shapes, styles, keys, and geometric anchors for classical-physics diagrams. It provides contact surfaces, straight and circular ramps, blocks, springs, pulleys, supports, pendulums, motion arrows, and optical mirrors, lenses, slabs, and prisms. Features use ordinary TikZ node, path, and pic syntax with reusable default styles. Named and parametric anchors help compose larger diagrams, while in-picture reference cards expose supported keys and anchors.

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