The output of the print is:
vmath.vector3(-355.58197021484, 40.946918487549, 1)
This is how I’ve set up the gui:
I moved it, so the bottom left of the default “frame” is the center of the gui, because of the changed camera “frame”.
How can I see how the gui is rendered?
These are the changes I made to the render script:
-- -------------- changes in function init() -------------- --
self.zoom_factor = 1
self.visible_frame = {x1=0, x2=0, y1=0, y2=0}
self.zoom_percent_w = 0
self.zoom_percent_h = 0
-- -------------- changes in function update() -------------- --
local w = render.get_width()
local h = render.get_height()
local zoom_w = w / 201 * self.zoom_factor
local zoom_h = h / 201 * self.zoom_factor
self.zoom_percent_w = ((w / 2 - zoom_w) - (-w / 2 + zoom_w)) / (w / 100)
self.zoom_percent_h = ((h / 2 - zoom_h) - (-h / 2 + zoom_h)) / (h / 100)
self.visible_frame = {
x1 = -w / 2 + zoom_w,
x2 = w / 2 - zoom_w,
y1 = -h / 2 + zoom_h,
y2 = h / 2 - zoom_h
}
render.set_projection(vmath.matrix4_orthographic(-w / 2 + zoom_w, w / 2 - zoom_w, -h / 2 + zoom_h, h / 2 - zoom_h, -1, 1))
-- -------------- function on_message() -------------- --
if message_id == hash("clear_color") then
self.clear_color = message.color
elseif message_id == hash("set_view_projection") then
self.view = message.view
elseif message_id == hash("get_window_dimensions") then
msg.post(sender, "get_window_dimensions_reply", {width = render.get_width(), height = render.get_height(),
visible_frame = self.visible_frame,
zoom_factor = self.zoom_factor, zoom_percent_w = self.zoom_percent_w, zoom_percent_h = self.zoom_percent_h})
elseif message_id == hash("set_zoom_factor") then
if message.zoom < 1 then message.zoom = 1
elseif message.zoom > 100 then message.zoom = 100 end
self.zoom_factor = message.zoom
end
On top of that I commented all of the other render.set_projection() calls in the update() function of the renderscript so they don’t get called.
In on_message() of the gui, this is what I do on “get_window_dimensions_reply”:
if message_id == hash("get_window_dimensions_reply") then
self.window_dimensions = message
self.window_dimensions_set = true
msg.post(sender, "get_window_dimensions")
local visible_width = self.window_dimensions.visible_frame.x2 - self.window_dimensions.visible_frame.x1
local visible_height = self.window_dimensions.visible_frame.y2 - self.window_dimensions.visible_frame.y1
for node_id, prop in pairs(ui_elements) do
local node = gui.get_node(node_id)
local pos = gui.get_position(node)
local size = gui.get_scale(node)
-- initial position
if prop.init_pos.x == nil then
prop.init_pos.x = pos.x
prop.init_pos.y = pos.y
prop.init_pos.z = pos.z
end
-- initial size
if prop.init_size.x == nil then
prop.init_size.x = size.x
prop.init_size.y = size.y
prop.init_size.z = size.z
end
pos.x = (prop.init_pos.x / 100) * self.window_dimensions.zoom_percent_w
pos.y = (prop.init_pos.y / 100) * self.window_dimensions.zoom_percent_h
gui.set_position(node, vmath.vector3(pos.x, pos.y, pos.z))
size.x = self.window_dimensions.zoom_percent_w / 100
size.y = self.window_dimensions.zoom_percent_h / 100
gui.set_scale(node, vmath.vector3(size.x, size.y, size.z))
end
end
)