Difference between revisions of "R3d.World:raycast"

From GiderosMobile
 
Line 24: Line 24:
 
=== Example ===
 
=== Example ===
 
<syntaxhighlight lang="lua">
 
<syntaxhighlight lang="lua">
−
function raycastcallback(c)
+
function raycastcallback(e)
 
-- fixture: table
 
-- fixture: table
 
-- body: table
 
-- body: table
Line 31: Line 31:
 
-- worldPoint: table
 
-- worldPoint: table
 
-- triangleIndex: number
 
-- triangleIndex: number
−
for k, v in pairs(c.fixture) do
+
for k, v in pairs(e.fixture) do
 
print("fixture:", k, v)
 
print("fixture:", k, v)
 
end
 
end
−
print("body id:", c.body.id)
+
print("body id:", e.body.id)
−
print("world normal coords:", c.worldNormal[1], c.worldNormal[2], c.worldNormal[3])
+
print("world normal coords:", e.worldNormal[1], e.worldNormal[2], e.worldNormal[3])
−
print("hit fraction:", c.hitFraction)
+
print("hit fraction:", e.hitFraction)
−
print("world point coords:", c.worldPoint[1], c.worldPoint[2], c.worldPoint[3])
+
print("world point coords:", e.worldPoint[1], e.worldPoint[2], e.worldPoint[3])
−
print("triangle index:", c.triangleIndex)
+
print("triangle index:", e.triangleIndex)
 
end
 
end
 
world:raycast(0, 0, 0, 0, 10, -32, raycastcallback)
 
world:raycast(0, 0, 0, 0, 10, -32, raycastcallback)

Latest revision as of 23:00, 18 December 2025

Available since: Gideros 2019.10
Class: R3d.World

Description

Performs a ray cast on the world. 

r3d.World:raycast(sx,sy,sz,ex,ey,ez,callback[,category])

Ray casting

You can use ReactPhysics3D to test intersection between a ray and the bodies of the world you have created. Ray casting can be performed against multiple bodies, a single body or any collider of a given body. Note that ray casting only works from the outside of the bodies. If the origin of a ray is inside a collision shape, no hit will be reported.

Parameters

sx: (number) the starting position of the raycast in the world x axis
sy: (number) the starting position of the raycast in the world y axis
sz: (number) the starting position of the raycast in the world z axis
ex: (number) the ending position of the raycast in the world x axis
ey: (number) the ending position of the raycast in the world y axis
ez: (number) the ending position of the raycast in the world z axis
callback: (function) the callback function
category: (number) bit mask for collision filtering optional

Example

function raycastcallback(e)
	-- fixture: table
	-- body: table
	-- worldNormal: table
	-- hitFraction: number
	-- worldPoint: table
	-- triangleIndex: number
	for k, v in pairs(e.fixture) do
		print("fixture:", k, v)
	end
	print("body id:", e.body.id)
	print("world normal coords:", e.worldNormal[1], e.worldNormal[2], e.worldNormal[3])
	print("hit fraction:", e.hitFraction)
	print("world point coords:", e.worldPoint[1], e.worldPoint[2], e.worldPoint[3])
	print("triangle index:", e.triangleIndex)
end
world:raycast(0, 0, 0, 0, 10, -32, raycastcallback)


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