cam.PushModelMatrix
Description
Pushes the specified matrix onto the render matrix stack. Unlike opengl, this will replace the current model matrix.
This does not work with cam.Start3D2D in certain hooks.
Arguments
2 boolean multiply = false
If set, multiplies given matrix with currently active matrix (cam.GetModelMatrix) before pushing.
Example
Rotates and scales text in the center of the screen.
hook.Add("HUDPaint", "2d rotation test", function()
local w, h = ScrW(), ScrH()
local t = RealTime()*50
local mat = Matrix()
mat:Translate(Vector(w/2, h/2))
mat:Rotate(Angle(0,t,0))
mat:Scale(Vector(1,1,1) * math.sin(t/100) *10)
mat:Translate(-Vector(w/2, h/2))
cam.PushModelMatrix(mat)
surface.SetFont("DermaDefault")
surface.SetTextColor(255, 255, 255, 255)
surface.SetTextPos(w/2, h/2)
surface.DrawText("LOLLOLOLOL")
cam.PopModelMatrix()
end)
Example
Simple function to draw rotated text
function draw.TextRotated(text, x, y, color, font, ang)
render.PushFilterMag(TEXFILTER.ANISOTROPIC)
render.PushFilterMin(TEXFILTER.ANISOTROPIC)
surface.SetFont(font)
surface.SetTextColor(color)
surface.SetTextPos(0, 0)
local textWidth, textHeight = surface.GetTextSize( text )
local rad = -math.rad( ang )
x = x - ( math.cos( rad ) * textWidth / 2 + math.sin( rad ) * textHeight / 2 )
y = y + ( math.sin( rad ) * textWidth / 2 + math.cos( rad ) * textHeight / 2 )
local m = Matrix()
m:SetAngles(Angle(0, ang, 0))
m:SetTranslation(Vector(x, y, 0))
cam.PushModelMatrix(m)
surface.DrawText(text)
cam.PopModelMatrix()
render.PopFilterMag()
render.PopFilterMin()
end
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