From 223a6984cbcfbdc66ee77b5c7e4342480e4d54ec Mon Sep 17 00:00:00 2001
From: uvos <devnull@uvos.xyz>
Date: Thu, 24 Apr 2025 23:27:56 +0200
Subject: [PATCH] Add fixed in space and moveing example

---
 fixedSpace/main.lua | 39 +++++++++++++++++++++++++++++++++++++++
 moveing/main.lua    | 40 ++++++++++++++++++++++++++++++++++++++++
 tracking/main.lua   | 32 +++++++++++++++++++++++---------
 3 files changed, 102 insertions(+), 9 deletions(-)
 create mode 100644 fixedSpace/main.lua
 create mode 100644 moveing/main.lua

diff --git a/fixedSpace/main.lua b/fixedSpace/main.lua
new file mode 100644
index 0000000..c2d5fc2
--- /dev/null
+++ b/fixedSpace/main.lua
@@ -0,0 +1,39 @@
+local width = 7
+local height = 7
+local distance = 5
+
+function getHeadsetMatrix()
+    local fx, fy, fz, fangle, fax, fay, faz = lovr.headset.getPose("head")
+    return lovr.math.newMat4(lovr.math.vec3(fx, fy, fz), lovr.math.vec3(1, 1, 1), lovr.math.quat(fangle, fax, fay, faz))
+end
+
+function drawGrid(pass, matrix)
+
+	for i=-0.5,0.5,0.05 do
+		local startVect = matrix*lovr.math.newVec3(width*-1, height*i, -distance)
+		local endVect = matrix*lovr.math.newVec3(width*1, height*i, -distance)
+		pass:line(startVect, endVect)
+	end
+
+	for i=-0.5,0.5,0.05 do
+		local startVect = matrix*lovr.math.newVec3(width*i, height*-1, -distance)
+		local endVect = matrix*lovr.math.newVec3(width*i, height*1, -distance)
+		pass:line(startVect, endVect)
+	end
+end
+
+function lovr.draw(pass)
+	if headMatrix == nil then
+		headMatrix = getHeadsetMatrix()
+	end
+
+	if headMatrix ~= nil then
+
+		pass:setColor(0, 1, 0)
+		drawGrid(pass, headMatrix)
+
+		local center = headMatrix * lovr.math.newVec3(0.0, 0.0, -distance)
+	pass:circle(center, 0.05, 0, 0, 0, 1, 'fill')
+	end
+end
+
diff --git a/moveing/main.lua b/moveing/main.lua
new file mode 100644
index 0000000..5a2c695
--- /dev/null
+++ b/moveing/main.lua
@@ -0,0 +1,40 @@
+local width = 7
+local height = 7
+local distance = 5
+local amplitude = 2
+local x = 0
+
+function getHeadsetMatrix()
+    local fx, fy, fz, fangle, fax, fay, faz = lovr.headset.getPose("head")
+    return lovr.math.newMat4(lovr.math.vec3(fx, fy, fz), lovr.math.vec3(1, 1, 1), lovr.math.quat(fangle, fax, fay, faz))
+end
+
+function drawGrid(pass, headMatrix)
+	local offset = math.sin(x)*amplitude
+
+	for i=-0.5,0.5,0.05 do
+		local startVect = headMatrix*lovr.math.newVec3(width*-1+offset, height*i, -distance)
+		local endVect = headMatrix*lovr.math.newVec3(width*1+offset, height*i, -distance)
+		pass:line(startVect, endVect)
+	end
+
+	for i=-0.5,0.5,0.05 do
+		local startVect = headMatrix*lovr.math.newVec3(width*i+offset, height*-1, -distance)
+		local endVect = headMatrix*lovr.math.newVec3(width*i+offset, height*1, -distance)
+		pass:line(startVect, endVect)
+	end
+end
+
+function lovr.draw(pass)
+	local headMatrix = getHeadsetMatrix()
+
+	x = x + 0.05
+
+	pass:setColor(0, 1, 0)
+	drawGrid(pass, headMatrix)
+
+	local center = headMatrix * lovr.math.newVec3(math.sin(x)*amplitude, 0.0, -distance)
+	pass:circle(center, 0.05, 0, 0, 0, 1, 'fill')
+
+end
+
diff --git a/tracking/main.lua b/tracking/main.lua
index 1a6a37f..c0c92db 100644
--- a/tracking/main.lua
+++ b/tracking/main.lua
@@ -1,22 +1,36 @@
-local width = 20
-local height = 20
-local distance = 10
+local width = 7
+local height = 7
+local distance = 5
+local headMatrix
+
+function getHeadsetMatrix()
+    local fx, fy, fz, fangle, fax, fay, faz = lovr.headset.getPose("head")
+    return lovr.math.newMat4(lovr.math.vec3(fx, fy, fz), lovr.math.vec3(1, 1, 1), lovr.math.quat(fangle, fax, fay, faz))
+end
+
+function drawGrid(pass, headMatrix)
 
-function drawGrid(pass)
-	pass:setColor(0, 1, 0)
 	for i=-0.5,0.5,0.05 do
-		pass:line(width*-0.5, height*i, -distance, width*0.5, height*i, -distance)
+		local startVect = headMatrix*lovr.math.newVec3(width*-1, height*i, -distance)
+		local endVect = headMatrix*lovr.math.newVec3(width*1, height*i, -distance)
+		pass:line(startVect, endVect)
 	end
 
 	for i=-0.5,0.5,0.05 do
-		pass:line(width*i, height*-0.5, -distance, width*i, height*0.5, -distance)
+		local startVect = headMatrix*lovr.math.newVec3(width*i, height*-1, -distance)
+		local endVect = headMatrix*lovr.math.newVec3(width*i, height*1, -distance)
+		pass:line(startVect, endVect)
 	end
 end
 
 function lovr.draw(pass)
+	local headMatrix = getHeadsetMatrix()
 
-	drawGrid(pass)
-	pass:circle(0, 0, -distance, 0.05, 0, 0, 0, 1, 'fill')
+	pass:setColor(0, 1, 0)
+	drawGrid(pass, headMatrix)
+
+	local center = headMatrix * lovr.math.newVec3(0.0, 0.0, -distance)
+	pass:circle(center, 0.05, 0, 0, 0, 1, 'fill')
 
 end