cyberarm/cyberarm_engine
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Cyberarm
2020-12-14 16:04:31 -06:00
parent 2447dde1af
commit 26dd688124
59 changed files with 770 additions and 741 deletions
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44
lib/cyberarm_engine/transform.rb
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@@ -2,11 +2,12 @@ module CyberarmEngine
# Basic 4x4 matrix operations
class Transform
attr_reader :elements
def initialize(matrix)
@elements = matrix
raise "Transform is wrong size! Got #{@elements.size}, expected 16" if 16 != @elements.size
raise "Invalid value for matrix, must all be numeric!" if @elements.any? { |e| e.nil? || !e.is_a?(Numeric)}
raise "Invalid value for matrix, must all be numeric!" if @elements.any? { |e| e.nil? || !e.is_a?(Numeric) }
end
def self.identity
@@ -27,10 +28,10 @@ module CyberarmEngine
double c = Math.cos(angle).degrees_to_radians
double s = Math.sin(angle).degrees_to_radians
matrix = [
+c, +s, 0, 0,
-s, +c, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1,
+c, +s, 0, 0,
-s, +c, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1
]
rotate_matrix = Transform.new(matrix, rows: 4, columns: 4)
@@ -44,7 +45,7 @@ module CyberarmEngine
)
end
return rotate_matrix
rotate_matrix
end
# 2d translate operation, replicates Gosu's Gosu.translate function
@@ -54,7 +55,7 @@ module CyberarmEngine
1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
x, y, z, 1,
x, y, z, 1
]
Transform.new(matrix)
@@ -67,7 +68,7 @@ module CyberarmEngine
scale_x, 0, 0, 0,
0, scale_y, 0, 0,
0, 0, scale_z, 0,
0, 0, 0, 1,
0, 0, 0, 1
]
scale_matrix = Transform.new(matrix)
@@ -81,7 +82,7 @@ module CyberarmEngine
)
end
return scale_matrix
scale_matrix
end
def self.concat(left, right)
@@ -107,13 +108,13 @@ module CyberarmEngine
1, 0, 0, x,
0, 1, 0, y,
0, 0, 1, z,
0, 0, 0, 1,
0, 0, 0, 1
]
Transform.new(matrix)
end
def self.rotate_3d(vector, order = "zyx")
def self.rotate_3d(vector, _order = "zyx")
x, y, z = vector.to_a[0..2].map { |axis| axis * Math::PI / 180.0 }
rotation_x = Transform.new(
@@ -163,7 +164,7 @@ module CyberarmEngine
x * x * n + c, x * y * n - z * s, x * z * n + y * s, 0,
y * x * n + z * s, y * y * n + c, y * z * n - x * s, 0,
x * z * n - y * s, y * z * n + x * s, z * z * n + c, 0,
0, 0, 0, 1.0
0, 0, 0, 1.0
]
)
end
@@ -190,7 +191,7 @@ module CyberarmEngine
[
f / aspect_ratio, 0.0, 0.0, 0.0,
0.0, f, 0.0, 0.0,
0.0, 0.0, zn, zf,
0.0, 0.0, zn, zf,
0.0, 0.0, -1.0, 0.0
]
)
@@ -200,13 +201,13 @@ module CyberarmEngine
s = Vector.new(
2 / (right - left.to_f),
2 / (top - bottom.to_f),
-2 / (far - near.to_f),
-2 / (far - near.to_f)
)
t = Vector.new(
(right + left.to_f) / (right - left.to_f),
(top + bottom.to_f) / (top - bottom.to_f),
(far + near.to_f) / (far - near.to_f),
(far + near.to_f) / (far - near.to_f)
)
Transform.new(
@@ -232,16 +233,15 @@ module CyberarmEngine
Transform.new(
[
x_axis.x, y_axis.y, z_axis.z, 0,
x_axis.x, y_axis.y, z_axis.z, 0,
x_axis.x, y_axis.y, z_axis.z, 0,
x_axis.x, y_axis.y, z_axis.z, 0,
x_axis.x, y_axis.y, z_axis.z, 0,
x_axis.x, y_axis.y, z_axis.z, 0,
-x_axis.dot(eye), -y_axis.dot(eye), -z_axis.dot(eye), 1
]
)
end
def *(other)
case other
when CyberarmEngine::Vector
matrix = @elements.clone
@@ -254,7 +254,7 @@ module CyberarmEngine
Transform.new(matrix)
when CyberarmEngine::Transform
return multiply_matrices(other)
multiply_matrices(other)
else
p other.class
raise TypeError, "Expected CyberarmEngine::Vector or CyberarmEngine::Transform got #{other.class}"
@@ -279,7 +279,7 @@ module CyberarmEngine
end
end
return Transform.new(matrix)
Transform.new(matrix)
end
# arranges Matrix in column major form
@@ -293,4 +293,4 @@ module CyberarmEngine
]
end
end
end
end