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local Camera = {}
local G = _G
local honey = honey
local math = math
local glm = honey.glm
setmetatable(Camera, {__index=_G})
setfenv(1, Camera)
local X = glm.makeVector(1, 0, 0)
local Y = glm.makeVector(0, 1, 0)
local Z = glm.makeVector(0, 0, 1)
--===== constructor =====--
function constructor(_, fov, ratio, near, far)
local self = {}
G.setmetatable(self, {__index=Camera})
self.projection = glm.mat4()
self.fov = fov
self.near = near
self.far = far
glm.perspective(fov, ratio, near, far, self.projection)
self.position = glm.vec3()
self.forward = glm.vec3()
self.up = Y
self.right = glm.vec3()
self.view = glm.mat4()
glm.mat4_identity(self.view)
return self
end
setmetatable(Camera, {__call=constructor})
--===== methods =====--
function translate(self, translation)
local v = glm.vec3()
glm.vec3_scale(self.forward, glm.vec3_get(translation, 0), v)
glm.vec3_add(self.position, v, self.position)
glm.vec3_scale(self.right, glm.vec3_get(translation, 2), v)
glm.vec3_add(self.position, v, self.position)
end
function setAngles(self, yaw, pitch)
local yawr = math.rad(yaw)
local pitchr = math.rad(pitch)
local x = math.cos(yawr) * math.cos(pitchr)
local y = math.sin(pitchr)
local z = math.sin(yawr) * math.cos(pitchr)
glm.setVector(self.forward, x, y, z)
glm.vec3_cross(self.forward, self.up, self.right)
glm.vec3_normalize(self.forward)
glm.vec3_normalize(self.right)
G.print(yaw, pitch, glm.vec3_tostring(self.forward), glm.vec3_tostring(self.right))
end
function updateView(self)
glm.look(self.position, self.forward, self.up, self.view)
end
function updateRatio(self, ratio)
glm.perspective(self.fov, ratio, self.near, self.far, self.projection)
end
--===== fin =====--
return Camera
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