Dan WoodandDan Wood
51db5a067a
* Starting on filling in documentation. * First pass on most/all files * more descriptions filled in * Some documentation but TBH the author would be better suited to explain how this works! * more basic stuff filled in * Add a description and bunch of discussion text for most of the view `body` declarations * more explanations Co-authored-by: Dan Wood <danwood@users.noreply.github.com>
42 lines
1.2 KiB
Swift
42 lines
1.2 KiB
Swift
import SwiftUI
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extension CGPoint {
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/// Calculate X and Y delta for each data point, based on data min/max and enclosing frame.
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/// - Parameters:
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/// - frame: Rectangle of enclosing frame
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/// - data: array of `Double`
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/// - Returns: X and Y delta as a `CGPoint`
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static func getStep(frame: CGRect, data: [Double]) -> CGPoint {
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let padding: CGFloat = 30.0
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// stepWidth
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var stepWidth: CGFloat = 0.0
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if data.count < 2 {
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stepWidth = 0.0
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}
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stepWidth = frame.size.width / CGFloat(data.count - 1)
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// stepHeight
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var stepHeight: CGFloat = 0.0
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var min: Double?
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var max: Double?
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if let minPoint = data.min(), let maxPoint = data.max(), minPoint != maxPoint {
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min = minPoint
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max = maxPoint
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} else {
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return .zero
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}
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if let min = min, let max = max, min != max {
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if min <= 0 {
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stepHeight = (frame.size.height - padding) / CGFloat(max - min)
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} else {
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stepHeight = (frame.size.height - padding) / CGFloat(max + min)
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}
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}
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return CGPoint(x: stepWidth, y: stepHeight)
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}
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}
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