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Code Issues 5 Packages Projects Releases 3 Wiki Activity

feat: add padding to preview image

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dscyrescotti
2024-07-05 18:07:51 +07:00
parent c46424ba87
commit aa5f230822
1 changed files with 15 additions and 2 deletions
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17
Memola/Canvas/RenderPasses/PreviewRenderPass.swift
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@@ -62,8 +62,9 @@ final class PreviewRenderPass: RenderPass {
}
}
}
let origin = CGPoint(x: bounds[0], y: bounds[1])
let size = CGSize(width: bounds[2] - bounds[0], height: bounds[3] - bounds[1])
let padding = calculatePadding(bounds)
let origin = CGPoint(x: bounds[0] - padding, y: bounds[1] - padding)
let size = CGSize(width: bounds[2] - origin.x + padding, height: bounds[3] - origin.y + padding)
previewTexture = createPreviewTexture(for: size, with: renderer)
descriptor?.colorAttachments[0].texture = previewTexture
descriptor?.colorAttachments[0].clearColor = MTLClearColor(red: 1, green: 1, blue: 1, alpha: 0)
@@ -83,6 +84,18 @@ final class PreviewRenderPass: RenderPass {
return true
}
private func calculatePadding(_ bounds: [CGFloat]) -> CGFloat {
let maxDifference = max(bounds[2] - bounds[0], bounds[3] - bounds[1])
let minPadding: CGFloat = 10.0
let maxPadding: CGFloat = 50.0
let normalizedDifference = min(maxDifference, 1.0)
let inverseDifference = 1.0 / normalizedDifference
let paddingRange = maxPadding - minPadding
return minPadding + (inverseDifference * paddingRange)
}
private func createPreviewTexture(for size: CGSize, with renderer: Renderer) -> MTLTexture? {
let ratio = size.width / size.height
let dimension: CGFloat = 800