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Return depth calculation as w

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This commit is contained in:
Alex Clink 2022-03-03 00:02:59 -05:00
parent 2e3d2b67b5
commit 5c4eedf17d
1 changed files with 1 additions and 3 deletions
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4
src/transform3d.cr
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@ -91,7 +91,6 @@ module PF
]
end
# TODO: Optionally return the result of w in some way (pointer / tuple?)
def self.apply(point : Vector3(Float64), matrix : Matrix(Float64, 16))
vec = Vector3.new(
point.x * matrix[0, 0] + point.y * matrix[1, 0] + point.z * matrix[2, 0] + matrix[3, 0],
@ -100,7 +99,7 @@ module PF
)
w = point.x * matrix[0, 3] + point.y * matrix[1, 3] + point.z * matrix[2, 3] + matrix[3, 3]
vec /= w unless w == 0.0
vec
{vec, w}
end
def initialize
@ -148,7 +147,6 @@ module PF
self
end
# TODO: Optionally return the result of w in some way (pointer / tuple?)
def apply(point : Vector3(Float64))
PF::Transform3d.apply(point, @matrix)
end