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GrantMeStrength
/ line.swift
Last active
March 17, 2024 12:19
Drawing a line between two points in SceneKit / iOS / Swift
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| func line(from p1: SCNVector3, to p2: SCNVector3) -> SCNNode? { | |
| // Draw a line between two points and return it as a node | |
| var indices = [Int32(0), Int32(1)] | |
| let positions = [p1, p2] | |
| let vertexSource = SCNGeometrySource(vertices: positions) | |
| let indexData = Data(bytes: &indices, count:MemoryLayout<Int32>.size * indices.count) | |
| let element = SCNGeometryElement(data: indexData, primitiveType: .line, primitiveCount: 1, bytesPerIndex: MemoryLayout<Int32>.size) | |
| let line = SCNGeometry(sources: [vertexSource], elements: [element]) | |
| let lineNode = SCNNode(geometry: line) |