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#159 Use map instead of array for named Matrices

This commit is contained in:
Jacek Olszak 2019-02-13 15:25:12 +01:00
parent 742d1226d8
commit 42cc2a0376
1 changed files with 12 additions and 16 deletions
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28
geometry_test.go
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@ -121,19 +121,16 @@ func TestMatrix_Unproject(t *testing.T) {
assert.InDelta(t, unprojected.Y, 0, delta) assert.InDelta(t, unprojected.Y, 0, delta)
}) })
t.Run("for projected vertices using all kinds of matrices", func(t *testing.T) { t.Run("for projected vertices using all kinds of matrices", func(t *testing.T) {
namedMatrices := [...]struct { namedMatrices := map[string]pixel.Matrix{
name string "IM": pixel.IM,
matrix pixel.Matrix "Scaled": pixel.IM.Scaled(pixel.ZV, 0.5),
}{ "Scaled x 2": pixel.IM.Scaled(pixel.ZV, 2),
{"IM", pixel.IM}, "Rotated": pixel.IM.Rotated(pixel.ZV, math.Pi/4),
{"Scaled", pixel.IM.Scaled(pixel.ZV, 0.5)}, "Moved": pixel.IM.Moved(pixel.V(0.5, 1)),
{"Scaled x 2", pixel.IM.Scaled(pixel.ZV, 2)}, "Moved 2": pixel.IM.Moved(pixel.V(-1, -0.5)),
{"Rotated", pixel.IM.Rotated(pixel.ZV, math.Pi/4)}, "Scaled and Rotated": pixel.IM.Scaled(pixel.ZV, 0.5).Rotated(pixel.ZV, math.Pi/4),
{"Moved", pixel.IM.Moved(pixel.V(0.5, 1))}, "Scaled, Rotated and Moved": pixel.IM.Scaled(pixel.ZV, 0.5).Rotated(pixel.ZV, math.Pi/4).Moved(pixel.V(1, 2)),
{"Moved 2", pixel.IM.Moved(pixel.V(-1, -0.5))}, "Rotated and Moved": pixel.IM.Rotated(pixel.ZV, math.Pi/4).Moved(pixel.V(1, 2)),
{"Scaled and Rotated", pixel.IM.Scaled(pixel.ZV, 0.5).Rotated(pixel.ZV, math.Pi/4)},
{"Scaled, Rotated and Moved", pixel.IM.Scaled(pixel.ZV, 0.5).Rotated(pixel.ZV, math.Pi/4).Moved(pixel.V(1, 2))},
{"Rotated and Moved", pixel.IM.Rotated(pixel.ZV, math.Pi/4).Moved(pixel.V(1, 2))},
} }
vertices := [...]pixel.Vec{ vertices := [...]pixel.Vec{
pixel.V(0, 0), pixel.V(0, 0),
@ -146,11 +143,10 @@ func TestMatrix_Unproject(t *testing.T) {
pixel.V(0, -10), pixel.V(0, -10),
pixel.V(5, -10), pixel.V(5, -10),
} }
for _, namedMatrix := range namedMatrices { for matrixName, matrix := range namedMatrices {
for _, vertex := range vertices { for _, vertex := range vertices {
testCase := fmt.Sprintf("for matrix %s and vertex %v", namedMatrix.name, vertex) testCase := fmt.Sprintf("for matrix %s and vertex %v", matrixName, vertex)
t.Run(testCase, func(t *testing.T) { t.Run(testCase, func(t *testing.T) {
matrix := namedMatrix.matrix
projected := matrix.Project(vertex) projected := matrix.Project(vertex)
unprojected := matrix.Unproject(projected) unprojected := matrix.Unproject(projected)
assert.InDelta(t, vertex.X, unprojected.X, delta) assert.InDelta(t, vertex.X, unprojected.X, delta)