Support Defold 1.9.4 VMath Additions

[Copilot]

Implements the new vmath functions from Defold 1.9.4 (defold/defold#9438) in allocation-free xmath style.

New Functions

• quat_matrix4(q, m) - Extract quaternion from matrix4 rotation component
• matrix4_compose(m, translation, rotation, scale) - Compose TRS matrix from vector3/4 + quat + vector3
• matrix4_scale(m, scale) - Create scale matrix from vector3, uniform number, or x/y/z numbers
• clamp(...) - Clamp numbers or vectors per-component; supports scalar or vector min/max bounds

Usage

local q = vmath.quat()
local m = vmath.matrix4()
local v = vmath.vector3(5, 10, 15)

-- Extract rotation from matrix
xmath.quat_matrix4(q, some_matrix)

-- Compose TRS matrix
xmath.matrix4_compose(m, position, rotation, scale)

-- Scale matrix variants
xmath.matrix4_scale(m, vmath.vector3(2, 2, 2))
xmath.matrix4_scale(m, 2)        -- uniform
xmath.matrix4_scale(m, 1, 2, 3)  -- x, y, z

-- Clamp (returns value for numbers, modifies in-place for vectors)
local clamped = xmath.clamp(value, 0, 1)
xmath.clamp(v, v, 0, 10)  -- per-component with scalar bounds
xmath.clamp(v, v, min_vec, max_vec)  -- per-component with vector bounds

Original prompt

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This section details on the original issue you should resolve

<issue_title>Support Defold 1.9.4 VMath Additions</issue_title>
<issue_description>defold/defold#9438

vmath.quat_matrix4 - get quaternion from matrix4
vmath.matrix4_compose - create matrix4 from translation (vector3|vector4), rotation (quaternion) and scale (vector3)
vmath.matrix4_scale - create matrix4 from scale (vector3) or from number (uniform scale) or 3 number (x, y, z)
vmath.clamp - clamp input value in range [min, max]. Input value can be number, vector, vector3, vector4. In case of vector type clamp applies per vector component. min, max also can be number, vector, vector3, vector4.</issue_description>

Comments on the Issue (you are @copilot in this section)

@thejustinwalsh Nice, i'll take a crack this weekend.

• Fixes Support Defold 1.9.4 VMath Additions #7

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