refactor: move glm classes into single filemain

1 files changed, 356 insertions, 0 deletions

diff --git a/honey/glm.lua b/honey/glm.lua
new file mode 100644
index 0000000..20d4727
--- /dev/null
+++ b/honey/glm.lua
@@ -0,0 +1,356 @@
+local glm = honey.glm

+

+local module = {}

+setmetatable(module, {__index=_G})

+setfenv(1, module)

+

+

+Vec3 = {}

+Mat4 = {}

+Quaternion = {}

+

+

+--===== Vec3 =====--

+

+

+function Vec3.new(_, values)

+	local self = {}

+	self.data = glm.vec3_create()

+	setmetatable(self, Vec3)

+	if values then

+		self[1] = values[1]

+		self[2] = values[2]

+		self[3] = values[3]

+	end

+	return self

+end

+setmetatable(Vec3, {__call=Vec3.new})

+

+

+function Vec3.__index(self, key)

+	if type(key) == 'number' then

+		return glm.vec3_get(self.data, key-1)

+	else

+		return Vec3[key]

+	end

+end

+

+

+function Vec3.__newindex(self, key, value)

+	glm.vec3_set(self.data, key-1, value)

+end

+

+

+function Vec3.__tostring(self)

+	return string.format("Vec3[%.4f, %.4f, %.4f]", self[1], self[2], self[3])

+end

+

+

+--===== arithmetic =====--

+

+local function swapIfNumber(self, other)

+	if type(self) == "number" and type(other) == "table" then

+		return other, self

+	else

+		return self, other

+	end

+end

+

+

+function Vec3.__add(self, other)

+	local self, other = swapIfNumber(self, other)

+

+	local dest = Vec3()

+	if type(other) == "number" then

+		glm.vec3_adds(self.data, other, dest.data)

+	elseif type(other) == "table" then

+		glm.vec3_add(self.data, other.data, dest.data)

+	else

+		error(string.format("cannot add %s to Vec3", type(other)))

+	end

+	return dest

+end

+

+

+function Vec3.__sub(self, other)

+	local dest = Vec3()

+	if type(other) == "number" then

+		glm.vec3_subs(self.data, other, dest.data)

+	elseif type(other) == "table" then

+		glm.vec3_sub(self.data, other.data, dest.data)

+	else

+		error(string.format("cannot subtract %s from Vec3", type(other)))

+	end

+	return dest

+end

+

+

+function Vec3.__mul(self, other)

+	local self, other = swapIfNumber(self, other)

+	local dest = Vec3()

+	if type(other) == "number" then

+		glm.vec3_scale(self.data, other, dest.data)

+	elseif type(other) == "table" then

+		glm.vec3_mul(self.data, other.data, dest.data)

+	else

+		error(string.format("cannot multiply %s and Vec3", type(other)))

+	end

+	return dest

+end

+

+

+function Vec3.__div(self, other)

+	local dest = Vec3()

+	if type(other) == "number" then

+		glm.vec3_divs(self.data, other, dest.data)

+	elseif type(other) == "table" then

+		glm.vec3_div(self.data, other.data, dest.data)

+	else

+		error(string.format("cannot divide Vec3 by %s", type(other)))

+	end

+	return dest

+end

+

+

+

+

+function Vec3.copyTo(self, dest)

+	glm.vec3_copy(self.data, dest.data)

+end

+

+

+function Vec3.zero(self)

+	glm.vec3_zero(self.data)

+end

+

+

+function Vec3.zero(self)

+	glm.vec3_zero(self.data)

+end

+function Vec3.one(self)

+	glm.vec3_one(self.data)

+end

+

+

+function Vec3.dot(self, other)

+	return glm.vec3_dot(self.data, other.data)

+end

+

+

+function Vec3.crossTo(self, other, dest)

+	glm.vec3_cross(self.data, other.data, dest.data)

+end

+function Vec3.cross(self, other)

+	local dest = Vec3()

+	self:crossTo(other, dest)

+	return dest

+end

+

+

+function Vec3.crossnTo(self, other, dest)

+	glm.vec3_crossn(self.data, other.data, dest.data)

+end

+function Vec3.crossn(self, other)

+	local dest = Vec3()

+	self:crossTo(other, dest)

+	return dest

+end

+

+

+function Vec3.norm2(self)

+	return glm.vec3_norm2(self.data)

+end

+function Vec3.norm(self)

+	return glm.vec3_norm(self.data)

+end

+

+

+function Vec3.normalize(self)

+	glm.vec3_normalize(self.data)

+end

+function Vec3.normalizeTo(self, dest)

+	glm.vec3_normalize_to(self.data, dest.data)

+end

+

+

+----------------------------------------

+

+local RowLookup = {}

+function RowLookup.new(_, row, data)

+	local self = {

+		row=row,

+		data=data,

+	}

+	setmetatable(self, RowLookup)

+	return self

+end

+setmetatable(RowLookup, {__call=RowLookup.new})

+function RowLookup.__index(self, col)

+	return glm.mat4_get(self.data, col-1, self.row-1)

+end

+function RowLookup.__newindex(self, col, value)

+	return glm.mat4_set(self.data, col-1, self.row-1, value)

+end

+

+

+--===== Mat4 =====--

+

+

+function Mat4.new(_, self, values)

+	local self = {}

+	self.type = "mat4"

+	self.data = glm.mat4_create()

+	setmetatable(self, Mat4)

+	if values then

+		self[1][1] = values[1]

+		self[1][2] = values[2]

+		self[1][3] = values[3]

+		self[1][4] = values[4]

+

+		self[2][1] = values[5]

+		self[2][2] = values[6]

+		self[2][3] = values[7]

+		self[2][4] = values[8]

+

+		self[3][1] = values[9]

+		self[3][2] = values[10]

+		self[3][3] = values[11]

+		self[3][4] = values[12]

+

+		self[4][1] = values[13]

+		self[4][2] = values[14]

+		self[4][3] = values[15]

+		self[4][4] = values[16]

+	end

+	return self

+end

+setmetatable(Mat4, {__call=Mat4.new})

+

+

+function Mat4.__index(self, key)

+	if type(key) == "number" then

+		return RowLookup(key, self.data)

+	else

+		return Mat4[key]

+	end

+end

+

+

+function Mat4.__tostring(self)

+	return string.format(

+		"/ %0.4f, %0.4f, %0.4f, %0.4f \\\n" ..

+		"| %0.4f, %0.4f, %0.4f, %0.4f |\n" ..

+		"| %0.4f, %0.4f, %0.4f, %0.4f |\n" ..

+		"\\ %0.4f, %0.4f, %0.4f, %0.4f /",

+		self[1][1], self[1][2], self[1][3], self[1][4],

+		self[2][1], self[2][2], self[2][3], self[2][4],

+		self[3][1], self[3][2], self[3][3], self[3][4],

+		self[4][1], self[4][2], self[4][3], self[4][4]

+	)

+end

+

+

+function Mat4.__mul(self, other)

+	if other.type == "mat4" then

+		local dest = Mat4()

+		glm.mat4_mul(self.data, other.data, dest.data)

+		return dest

+	elseif other.type == "vec4" then

+		-- todo

+	elseif other.type == "vec3" then

+		local dest = Vec3()

+		glm.mat4_mulv3(self.data, other.data, 1.0, dest.data)

+		return dest

+	else

+		error(string.format("cannot multiply Mat4 by %s", type(other)))

+	end

+end

+

+

+function Mat4.copyTo(self, dest)

+	glm.mat4_copy(self.data, dest.data)

+end

+

+

+function Mat4.identity(self)

+	glm.mat4_identity(self.data)

+	return self

+end

+

+

+function Mat4.zero(self)

+	glm.mat4_zero(self.data)

+	return self

+end

+

+

+function Mat4.mul(self, other)

+	glm.mat4_mul(self.data, other.data, self.data)

+	return self

+end

+

+

+function Mat4.translate(self, vec)

+	glm.translate(self.data, vec.data)

+	return self

+end

+

+

+function Mat4.rotateX(self, angle)

+	glm.rotate_x(self.data, angle, self.data)

+	return self

+end

+function Mat4.rotateY(self, angle)

+	glm.rotate_y(self.data, angle, self.data)

+	return self

+end

+function Mat4.rotateZ(self, angle)

+	glm.rotate_z(self.data, angle, self.data)

+	return self

+end

+

+

+function Mat4.scale(self, vec)

+	glm.scale(self.data, vec.data)

+	return self

+end

+

+

+function Mat4.perspective(self, fovy, aspect, near, far)

+	glm.perspective(fovy, aspect, near, far, self.data)

+	return self

+end

+function Mat4.perspectiveResize(self, aspect)

+	glm.perspective_resize(aspect, self.data)

+	return self

+end

+

+

+--===== Quaternion =====--

+

+

+Quaternion.__index = Quaternion

+

+

+function Quaternion.new(_, tbl)

+	local tbl = tbl or { 0, 0, 0, 0 }

+	local self = {}

+	self.data = glm.quat_create()

+	glm.quat_init(self.data, unpack(tbl))

+	setmetatable(self, Quaternion)

+	return self

+end

+setmetatable(Quaternion, {__call=Quaternion.new})

+

+

+function Quaternion.toMat4(self)

+	local m = Mat4()

+	glm.quat_mat4(self.data, m.data)

+	return m

+end

+

+

+---------------------------

+

+

+return module