From a0713598da8ef18c7dbe0742ce8d44670cd98abb Mon Sep 17 00:00:00 2001
From: Jacek Olszak <jacekolszak@gmail.com>
Date: Tue, 12 Feb 2019 16:26:19 +0100
Subject: [PATCH] #159 Add test case for rotated and moved matrix
---
geometry_test.go | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/geometry_test.go b/geometry_test.go
index 13f90e2..b1ce00f 100644
--- a/geometry_test.go
+++ b/geometry_test.go
@@ -100,6 +100,12 @@ func TestMatrix_Unproject(t *testing.T) {
assert.InDelta(t, unprojected.X, 2, delta)
assert.InDelta(t, unprojected.Y, 2, delta)
})
+ t.Run("for rotated and moved matrix", func(t *testing.T) {
+ matrix := pixel.IM.Rotated(pixel.ZV, math.Pi/2).Moved(pixel.V(1, 1))
+ unprojected := matrix.Unproject(pixel.V(1, 2))
+ assert.InDelta(t, unprojected.X, 1, delta)
+ assert.InDelta(t, unprojected.Y, 0, delta)
+ })
t.Run("for singular matrix", func(t *testing.T) {
matrix := pixel.Matrix{0, 0, 0, 0, 0, 0}
unprojected := matrix.Unproject(pixel.ZV)
--
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