From ca426ecad8121627c45ea7da9e83254aec9af529 Mon Sep 17 00:00:00 2001
From: Heiner Spiess <spiess.heiner@gmail.com>
Date: Thu, 4 Dec 2025 15:02:55 +0100
Subject: [PATCH] adding a pixel to all sides in needed to not interpolate.
 however, bounds are off now

---
 src/projective/affine.jl  | 9 +++++++--
 test/projective/affine.jl | 2 +-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/projective/affine.jl b/src/projective/affine.jl
index 51a77ae..acf23d5 100644
--- a/src/projective/affine.jl
+++ b/src/projective/affine.jl
@@ -76,7 +76,7 @@ function getprojection(scale::ScaleFixed, bounds::Bounds{N}; randstate = nothing
     # If no scaling needs to be done, return a noop transform
     (scale.sizes == length.(bounds.rs)) && return IdentityTransformation()
 
-    ratios = (scale.sizes .+ 1) ./ length.(bounds.rs)
+    ratios = (scale.sizes .+ 2) ./ length.(bounds.rs)
     upperleft = SVector{N, Float32}(minimum.(bounds.rs)) .- 1
     P = scaleprojection(ratios)
     if any(upperleft .!= 0)
@@ -111,7 +111,12 @@ getrandstate(tfm::Zoom) = rand(tfm.dist)
 
 function getprojection(tfm::Zoom, bounds::Bounds{N}; randstate = getrandstate(tfm)) where N
     ratio = randstate
-    return scaleprojection(ntuple(_ -> ratio, N))
+    return getprojection(ScaleRatio{N}(ntuple(_ -> ratio, N)), bounds; randstate = nothing)
+end
+
+function projectionbounds(tfm::Zoom, P, bounds::Bounds{N}; randstate = getrandstate(tfm)) where N
+    ratio = randstate
+    projectionbounds(ScaleFixed{N}(fixed_sizes(ScaleRatio{N}(ntuple(_ -> ratio, N)), bounds)), P, bounds; randstate = nothing)
 end
 
 """
diff --git a/test/projective/affine.jl b/test/projective/affine.jl
index 519d5d2..fa5855a 100644
--- a/test/projective/affine.jl
+++ b/test/projective/affine.jl
@@ -82,7 +82,7 @@ include("../imports.jl")
             testprojective(tfm)
 
         end
-        
+
         @testset ExtendedTestSet "ScaleRatio" begin
             tfm = ScaleRatio((1/2, 1/2))
             @test_nowarn apply(tfm, image)