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100 lines
3.8 KiB
100 lines
3.8 KiB
//
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// ItemsExtension.swift
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// lottie-swift
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//
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// Created by Brandon Withrow on 1/18/19.
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//
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import Foundation
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// MARK: - NodeTree
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final class NodeTree {
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var rootNode: AnimatorNode? = nil
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var transform: ShapeTransform? = nil
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var renderContainers: [ShapeContainerLayer] = []
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var paths: [PathOutputNode] = []
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var childrenNodes: [AnimatorNode] = []
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}
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extension Array where Element == ShapeItem {
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func initializeNodeTree() -> NodeTree {
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let nodeTree = NodeTree()
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for item in self {
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guard item.hidden == false, item.type != .unknown else { continue }
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if let fill = item as? Fill {
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let node = FillNode(parentNode: nodeTree.rootNode, fill: fill)
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nodeTree.rootNode = node
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nodeTree.childrenNodes.append(node)
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} else if let stroke = item as? Stroke {
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let node = StrokeNode(parentNode: nodeTree.rootNode, stroke: stroke)
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nodeTree.rootNode = node
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nodeTree.childrenNodes.append(node)
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} else if let gradientFill = item as? GradientFill {
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let node = GradientFillNode(parentNode: nodeTree.rootNode, gradientFill: gradientFill)
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nodeTree.rootNode = node
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nodeTree.childrenNodes.append(node)
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} else if let gradientStroke = item as? GradientStroke {
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let node = GradientStrokeNode(parentNode: nodeTree.rootNode, gradientStroke: gradientStroke)
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nodeTree.rootNode = node
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nodeTree.childrenNodes.append(node)
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} else if let ellipse = item as? Ellipse {
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let node = EllipseNode(parentNode: nodeTree.rootNode, ellipse: ellipse)
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nodeTree.rootNode = node
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nodeTree.childrenNodes.append(node)
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} else if let rect = item as? Rectangle {
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let node = RectangleNode(parentNode: nodeTree.rootNode, rectangle: rect)
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nodeTree.rootNode = node
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nodeTree.childrenNodes.append(node)
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} else if let star = item as? Star {
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switch star.starType {
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case .none:
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continue
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case .polygon:
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let node = PolygonNode(parentNode: nodeTree.rootNode, star: star)
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nodeTree.rootNode = node
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nodeTree.childrenNodes.append(node)
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case .star:
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let node = StarNode(parentNode: nodeTree.rootNode, star: star)
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nodeTree.rootNode = node
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nodeTree.childrenNodes.append(node)
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}
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} else if let shape = item as? Shape {
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let node = ShapeNode(parentNode: nodeTree.rootNode, shape: shape)
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nodeTree.rootNode = node
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nodeTree.childrenNodes.append(node)
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} else if let trim = item as? Trim {
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let node = TrimPathNode(parentNode: nodeTree.rootNode, trim: trim, upstreamPaths: nodeTree.paths)
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nodeTree.rootNode = node
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nodeTree.childrenNodes.append(node)
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} else if let xform = item as? ShapeTransform {
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nodeTree.transform = xform
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continue
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} else if let group = item as? Group {
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let tree = group.items.initializeNodeTree()
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let node = GroupNode(name: group.name, parentNode: nodeTree.rootNode, tree: tree)
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nodeTree.rootNode = node
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nodeTree.childrenNodes.append(node)
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/// Now add all child paths to current tree
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nodeTree.paths.append(contentsOf: tree.paths)
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nodeTree.renderContainers.append(node.container)
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} else if item is Repeater {
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LottieLogger.shared.warn("""
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The Main Thread rendering engine doesn't currently support repeaters.
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To play an animation with repeaters, you can use the Core Animation rendering engine instead.
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""")
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}
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if let pathNode = nodeTree.rootNode as? PathNode {
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//// Add path container to the node tree
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nodeTree.paths.append(pathNode.pathOutput)
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}
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if let renderNode = nodeTree.rootNode as? RenderNode {
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nodeTree.renderContainers.append(ShapeRenderLayer(renderer: renderNode.renderer))
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}
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}
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return nodeTree
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}
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}
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