From 026c466d05a7eda8f3f16f07c172acb567251119 Mon Sep 17 00:00:00 2001 From: realtradam Date: Mon, 9 Aug 2021 08:21:26 -0400 Subject: added coordinate_to_screenspace and coordinate_to_worldspace methods to Camera --- lib/ruby2d/camera.rb | 17 +++++++++++++++++ lib/ruby2d/camera/version.rb | 2 +- 2 files changed, 18 insertions(+), 1 deletion(-) (limited to 'lib/ruby2d') diff --git a/lib/ruby2d/camera.rb b/lib/ruby2d/camera.rb index ba0a280..8037b4d 100644 --- a/lib/ruby2d/camera.rb +++ b/lib/ruby2d/camera.rb @@ -94,6 +94,23 @@ module Ruby2D angle %= 360 @angle = angle end + + # Convert screenspace coordinates into worldspace camera ones + def self.coordinate_to_worldspace(x, y) + angle = Camera.angle * (Math::PI / 180) + half_width = Window.width * 0.5 + half_height = Window.height * 0.5 + + [(((x - half_width) / zoom) * Math.cos(-angle)) - (((y - half_height) / zoom) * Math.sin(-angle)) + self.x, + (((x - half_width) / zoom) * Math.sin(-angle)) + (((y - half_height) / zoom) * Math.cos(-angle)) + self.y] + end + + # Convert worldspace camera coordinates into screenspace ones + def self.coordinate_to_screenspace(x, y) + angle = Camera.angle * (Math::PI / 180) + [(((x - Camera.x) * Math.cos(angle)) - ((y - Camera.y) * Math.sin(angle))) * Camera.zoom + (Window.width * 0.5), + (((x - Camera.x) * Math.sin(angle)) + ((y - Camera.y) * Math.cos(angle))) * Camera.zoom + (Window.height * 0.5)] + end end end diff --git a/lib/ruby2d/camera/version.rb b/lib/ruby2d/camera/version.rb index 29ac7a8..2372efc 100644 --- a/lib/ruby2d/camera/version.rb +++ b/lib/ruby2d/camera/version.rb @@ -2,6 +2,6 @@ module Ruby2d module Camera - VERSION = '1.0.0' + VERSION = '1.1.0' end end -- cgit v1.2.3