Drawing a projection-mapping mesh by hand in software removes the dependency on an accurate 3D model

Tools like CamSnapper require a precise 3D model of the physical stage to compute projection mapping. When no model exists or the built set deviates from design, a mesh-drawing tool lets the operator click-to-place triangles or rectangles directly on a camera view of the stage, creating a UV-mapped mesh from scratch. Content is then warped through that mesh to the output. This workflow is slower than model-based mapping but far more robust in live situations where the set is assembled on the day and may differ from any pre-existing file. The Simple Mixer 1.5 ‘Warper’ tool implements this approach.

Examples

A DJ booth with irregular panels: operator opens Warper, zooms in on the camera feed, clicks points around each panel face to create quads, applies UV content mapping per quad, outputs to projector. No 3D file needed.

Assessment

List the steps to map a 4-panel asymmetric LED installation using a mesh-drawing approach when no CAD model is available. At which step does the operator physically align the output?