Difference between revisions of "Matrix:transformPoint"

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=== Description ===
 
=== Description ===
 
Transforms the matrix to an array of points. This function applies the geometric transform represented by the Matrix to a specified array of points.
 
Transforms the matrix to an array of points. This function applies the geometric transform represented by the Matrix to a specified array of points.
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Matrix:transformPoint()
 
Matrix:transformPoint()
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=== Example ===
 
=== Example ===
 
'''In this example we reset the player1 matrix by transforming it to the points (0, 0, 0) and we use the result for the lighting'''
 
'''In this example we reset the player1 matrix by transforming it to the points (0, 0, 0) and we use the result for the lighting'''
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-- game loop
 
-- game loop
 
function LevelX:onEnterFrame(e)
 
function LevelX:onEnterFrame(e)
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Lighting.computeShadows(self.scene)
 
Lighting.computeShadows(self.scene)
 
end
 
end
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{{Matrix}}
 
{{Matrix}}

Latest revision as of 15:30, 13 July 2023

Available since: Gideros 2013.9
Class: Matrix

Description

Transforms the matrix to an array of points. This function applies the geometric transform represented by the Matrix to a specified array of points. 

Matrix:transformPoint()

Example

In this example we reset the player1 matrix by transforming it to the points (0, 0, 0) and we use the result for the lighting 

-- game loop
function LevelX:onEnterFrame(e)
	local matrix = self.player1.body:getTransform()
	local playerx, playery, playerz = self.player1.body:getTransform():getPosition()
	-- move player
	local force = 12
	if self.player1.isleft and not self.player1.isright then
		self.player1.body:applyLocalForceAtCenterOfMass(0, 0, force)
	elseif self.player1.isright and not self.player1.isleft then
		self.player1.body:applyLocalForceAtCenterOfMass(0, 0, -force)
	end
	-- position the player model along its body
	self.player1:setMatrix(matrix)
	-- the camera FPS style
	self.camera:lookAt(playerx+0.1, playery+24, playerz+4,
		playerx, playery, playerz+4
	)
	-- lighting
	local px, py, pz = matrix:transformPoint(0, 0, 0) -- hgy29
	Lighting.setLight(px, py+8, pz+1, 0.2)
	Lighting.setLightTarget(px, py, pz, 32, 20)
	--Compute shadows
	Lighting.computeShadows(self.scene)
end



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