renormalize line endings

7 files changed, 953 insertions, 953 deletions

diff --git a/.gitignore b/.gitignore
index 6d4cb0c..b100ea7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
-*.

-*~

-*.swp

-.*

+*.
+*~
+*.swp
+.*
diff --git a/fragment.glsl b/fragment.glsl
index c6ef691..532d1ac 100644
--- a/fragment.glsl
+++ b/fragment.glsl
@@ -1,17 +1,17 @@
-#version 410 core

-out vec4 FragColor;

-

-in vec3 position;

-in vec3 normal;

-in vec2 tex;

-

-uniform float time;

-uniform sampler2D ourTexture;

-

-void main()

-{

-	//FragColor = vec4(sin(time), cos(time), -sin(time), 1.0f);

-    //FragColor = vec4(normal, 1.0f);

-    //FragColor = vec4(tex, 1.0f, 1.0f);

-    FragColor = texture(ourTexture, tex);

-}

+#version 410 core
+out vec4 FragColor;
+
+in vec3 position;
+in vec3 normal;
+in vec2 tex;
+
+uniform float time;
+uniform sampler2D ourTexture;
+
+void main()
+{
+	//FragColor = vec4(sin(time), cos(time), -sin(time), 1.0f);
+    //FragColor = vec4(normal, 1.0f);
+    //FragColor = vec4(tex, 1.0f, 1.0f);
+    FragColor = texture(ourTexture, tex);
+}
diff --git a/honey.bak/ecs-systems.lua b/honey.bak/ecs-systems.lua
index 5dec159..e3f9d56 100644
--- a/honey.bak/ecs-systems.lua
+++ b/honey.bak/ecs-systems.lua
@@ -1,76 +1,76 @@
-local ecs = require 'honey.ecs'

-

-

-local module = {}

-setmetatable(module, {__index=_G})

-setfenv(1, module)

-

-

-

---===== transform cascading =====--

-

-local function recursiveComputeTransform(entity)

-	if entity._transformComputed then 

-		return entity._transform 

-	end

-	if entity.parent == false then

-		entity._transformComputed = true

-		entity._transform = entity.transform

-		return entity.transform

-	end

-

-	entity._transformComputed = true

-	local parentTransform = recursiveComputeTransform(entity.parent)

-	entity._transform = parentTransform * entity.transform

-	return entity._transform

-end

-

--- update transforms

-transformCascade = {

-	filter=ecs.Filter.AND{"transform", "parent"},

-	prepareEntity=function(self, entity)

-		entity._transform = nil

-		entity._transformComputed = false

-	end,

-	update=function(self, entity, dt)

-		recursiveComputeTransform(entity)

-	end,

-	priority=98,

-}

-

-

---===== rendering =====--

-

-function renderCam(camera, priority)

-	local priority = priority or 99

-	return {

-		filter=ecs.Filter.AND{"mesh", "shader", "transform"},

-		update=function(self, entity, dt)

-			entity.shader:use()

-			entity.shader:configure{

-				matrix={

-					model=entity._transform,

-					view=camera.view,

-					projection=camera.projection,

-				},

-			}

-			entity.mesh:drawElements()

-		end,

-		nopause=true,

-		priority=priority,

-	}

-end

-

---===== update functions =====--

-

-update = {

-	filter=ecs.Filter.AND{"update"},

-	update=function(self, entity, dt)

-		entity.update(entity, dt)

-	end,

-	priority=50,

-}

-

-

-

-return module

+local ecs = require 'honey.ecs'
+
+
+local module = {}
+setmetatable(module, {__index=_G})
+setfenv(1, module)
+
+
+
+--===== transform cascading =====--
+
+local function recursiveComputeTransform(entity)
+	if entity._transformComputed then 
+		return entity._transform 
+	end
+	if entity.parent == false then
+		entity._transformComputed = true
+		entity._transform = entity.transform
+		return entity.transform
+	end
+
+	entity._transformComputed = true
+	local parentTransform = recursiveComputeTransform(entity.parent)
+	entity._transform = parentTransform * entity.transform
+	return entity._transform
+end
+
+-- update transforms
+transformCascade = {
+	filter=ecs.Filter.AND{"transform", "parent"},
+	prepareEntity=function(self, entity)
+		entity._transform = nil
+		entity._transformComputed = false
+	end,
+	update=function(self, entity, dt)
+		recursiveComputeTransform(entity)
+	end,
+	priority=98,
+}
+
+
+--===== rendering =====--
+
+function renderCam(camera, priority)
+	local priority = priority or 99
+	return {
+		filter=ecs.Filter.AND{"mesh", "shader", "transform"},
+		update=function(self, entity, dt)
+			entity.shader:use()
+			entity.shader:configure{
+				matrix={
+					model=entity._transform,
+					view=camera.view,
+					projection=camera.projection,
+				},
+			}
+			entity.mesh:drawElements()
+		end,
+		nopause=true,
+		priority=priority,
+	}
+end
+
+--===== update functions =====--
+
+update = {
+	filter=ecs.Filter.AND{"update"},
+	update=function(self, entity, dt)
+		entity.update(entity, dt)
+	end,
+	priority=50,
+}
+
+
+
+return module
diff --git a/honey.bak/glm.lua b/honey.bak/glm.lua
index af8dcb3..c7c83b9 100644
--- a/honey.bak/glm.lua
+++ b/honey.bak/glm.lua
@@ -1,361 +1,361 @@
-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.copy(self, other)

-	glm.mat4_copy(other.data, self.data)

-	return self

-end

-function Mat4.copyTo(self, dest)

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

-	return self

-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

+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.copy(self, other)
+	glm.mat4_copy(other.data, self.data)
+	return self
+end
+function Mat4.copyTo(self, dest)
+	glm.mat4_copy(self.data, dest.data)
+	return self
+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
diff --git a/honey/ecs-systems.lua b/honey/ecs-systems.lua
index 18f50a8..9995304 100644
--- a/honey/ecs-systems.lua
+++ b/honey/ecs-systems.lua
@@ -1,118 +1,118 @@
-local ecs = require 'honey.ecs'

-local gl = honey.gl

-local glfw = honey.glfw

-

-

-local module = {}

-setmetatable(module, {__index=_G})

-setfenv(1, module)

-

-

-

---===== transform cascading =====--

-

-transform = function(params)

-	return {

-		db = params.db,

-		update = function(self, dt)

-			local entities = self.db:queryComponent("transform")

-	

-			-- prepare transforms

-			for id, transform in pairs(entities) do

-				transform._visited = false

-			end

-	

-			-- helper function

-			local function recursiveTransform(transform)

-				if transform._visited then

-					return transform._matrix

-				end

-	

-				if not transform.parent then

-					transform._matrix = transform.matrix

-				else

-					local parentTransform = self.db:getComponent(transform.parent, "transform")

-					local parentMatrix = recursiveTransform(parentTransform)

-					transform._matrix = parentMatrix * transform.matrix

-				end

-				transform._visited = true

-				return transform._matrix

-			end

-	

-			-- compute transforms

-			for id, transform in pairs(entities) do

-				recursiveTransform(transform)

-			end

-		end,

-		priority = 0,

-	}

-end

-

-

-

---===== rendering =====--

-

-function renderCamera(params) 

-	return {

-		camera = params.camera,

-		db = params.db,

-		priority = params.priority or 99,

-		update = function(self, dt)

-			local cameraParams = self.db:getComponent(self.camera, "camera")

-			local cameraTransform = self.db:getComponent(self.camera, "transform")

-			local view

-			if cameraTransform then

-				view = cameraTransform._matrix

-			else

-				view = Mat4():identity()

-			end

-	

-			local entities = self.db:queryComponent("renderMesh")

-			for entity, tbl in pairs(entities) do

-				-- get shader

-				local shader = honey.shader.loadShader(tbl.shader.vertex, tbl.shader.fragment)

-				shader:use()

-	

-				-- bind textures

-				local texOffset = 0

-				for name, texTbl in pairs(tbl.textures or {}) do

-					local texture = honey.image.loadImage(texTbl.filename, texTbl.params)

-					gl.BindTexture(gl.TEXTURE_2D + texOffset, texture.texture)

-					shader:setInt(name, texOffset)

-					texOffset = texOffset + 1

-				end

-	

-				-- configure default uniforms

-				local query = self.db:getComponent(entity, "transform")

-				local model = (query and query._matrix) or Mat4():identity()

-				shader:configure{

-					float={

-						time=glfw.GetTime(),

-					},

-					matrix={

-						view=view,

-						projection=cameraParams.projection,

-						model=model,

-					},

-				}

-	

-				-- draw mesh

-				local mesh = honey.mesh.loadMesh(tbl.mesh.filename, tbl.mesh.index)

-				mesh:drawElements()

-	

-				-- unbind textures

-				for i=0,texOffset-1 do

-					gl.BindTexture(gl.TEXTURE_2D + i, 0)

-				end

-			end

-		end,

-	}

-end

-

-

-

---===== update functions =====--

-

-

-

-return module

+local ecs = require 'honey.ecs'
+local gl = honey.gl
+local glfw = honey.glfw
+
+
+local module = {}
+setmetatable(module, {__index=_G})
+setfenv(1, module)
+
+
+
+--===== transform cascading =====--
+
+transform = function(params)
+	return {
+		db = params.db,
+		update = function(self, dt)
+			local entities = self.db:queryComponent("transform")
+	
+			-- prepare transforms
+			for id, transform in pairs(entities) do
+				transform._visited = false
+			end
+	
+			-- helper function
+			local function recursiveTransform(transform)
+				if transform._visited then
+					return transform._matrix
+				end
+	
+				if not transform.parent then
+					transform._matrix = transform.matrix
+				else
+					local parentTransform = self.db:getComponent(transform.parent, "transform")
+					local parentMatrix = recursiveTransform(parentTransform)
+					transform._matrix = parentMatrix * transform.matrix
+				end
+				transform._visited = true
+				return transform._matrix
+			end
+	
+			-- compute transforms
+			for id, transform in pairs(entities) do
+				recursiveTransform(transform)
+			end
+		end,
+		priority = 0,
+	}
+end
+
+
+
+--===== rendering =====--
+
+function renderCamera(params) 
+	return {
+		camera = params.camera,
+		db = params.db,
+		priority = params.priority or 99,
+		update = function(self, dt)
+			local cameraParams = self.db:getComponent(self.camera, "camera")
+			local cameraTransform = self.db:getComponent(self.camera, "transform")
+			local view
+			if cameraTransform then
+				view = cameraTransform._matrix
+			else
+				view = Mat4():identity()
+			end
+	
+			local entities = self.db:queryComponent("renderMesh")
+			for entity, tbl in pairs(entities) do
+				-- get shader
+				local shader = honey.shader.loadShader(tbl.shader.vertex, tbl.shader.fragment)
+				shader:use()
+	
+				-- bind textures
+				local texOffset = 0
+				for name, texTbl in pairs(tbl.textures or {}) do
+					local texture = honey.image.loadImage(texTbl.filename, texTbl.params)
+					gl.BindTexture(gl.TEXTURE_2D + texOffset, texture.texture)
+					shader:setInt(name, texOffset)
+					texOffset = texOffset + 1
+				end
+	
+				-- configure default uniforms
+				local query = self.db:getComponent(entity, "transform")
+				local model = (query and query._matrix) or Mat4():identity()
+				shader:configure{
+					float={
+						time=glfw.GetTime(),
+					},
+					matrix={
+						view=view,
+						projection=cameraParams.projection,
+						model=model,
+					},
+				}
+	
+				-- draw mesh
+				local mesh = honey.mesh.loadMesh(tbl.mesh.filename, tbl.mesh.index)
+				mesh:drawElements()
+	
+				-- unbind textures
+				for i=0,texOffset-1 do
+					gl.BindTexture(gl.TEXTURE_2D + i, 0)
+				end
+			end
+		end,
+	}
+end
+
+
+
+--===== update functions =====--
+
+
+
+return module
diff --git a/honey/glm.lua b/honey/glm.lua
index 20d4727..dada37f 100644
--- a/honey/glm.lua
+++ b/honey/glm.lua
@@ -1,356 +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

+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
diff --git a/vertex.glsl b/vertex.glsl
index 1e9fb67..cb20d1f 100644
--- a/vertex.glsl
+++ b/vertex.glsl
@@ -1,21 +1,21 @@
-#version 410 core

-layout (location = 0) in vec3 in_position;

-layout (location = 1) in vec3 in_normal;

-layout (location = 2) in vec2 in_tex;

-

-uniform mat4 model;

-uniform mat4 view;

-uniform mat4 projection;

-

-out vec3 position;

-out vec3 normal;

-out vec2 tex;

-

-void main()

-{

-    gl_Position = projection * view * model * vec4(in_position, 1.0);

-    position = in_position;

-    //normal = vec3(model * vec4(in_normal, 1.0f));

-    normal = in_normal;

-    tex = in_tex;

-}

+#version 410 core
+layout (location = 0) in vec3 in_position;
+layout (location = 1) in vec3 in_normal;
+layout (location = 2) in vec2 in_tex;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+out vec3 position;
+out vec3 normal;
+out vec2 tex;
+
+void main()
+{
+    gl_Position = projection * view * model * vec4(in_position, 1.0);
+    position = in_position;
+    //normal = vec3(model * vec4(in_normal, 1.0f));
+    normal = in_normal;
+    tex = in_tex;
+}