Difference between revisions of "DevDoc:HUD"
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for special hudelements with custom geometry (lines) use Hook_HUDStep and project object pos manually (obj.mvPos, obj.mfBoundingRad, ProjectSizeAndPosEx) | for special hudelements with custom geometry (lines) use Hook_HUDStep and project object pos manually (obj.mvPos, obj.mfBoundingRad, ProjectSizeAndPosEx) | ||
| − | otherwise use autotracking : | + | otherwise use autotracking : to avoid iterating over all objects/hudelements which is expansive in lua, see gfx2D.h |
Vector2 mvTrackPosOffset; ///< in pixels | Vector2 mvTrackPosOffset; ///< in pixels | ||
Revision as of 20:29, 24 June 2007
HUD : Head-up display, a visual display technology for fighter airplanes, cars and others
HUD-elements includes object markers such as the edges around objects and the text next to them
such hud elements are 2d graphics aligned to the projected positions of 3d objects
for special hudelements with custom geometry (lines) use Hook_HUDStep and project object pos manually (obj.mvPos, obj.mfBoundingRad, ProjectSizeAndPosEx)
otherwise use autotracking : to avoid iterating over all objects/hudelements which is expansive in lua, see gfx2D.h
Vector2 mvTrackPosOffset; ///< in pixels Vector2 mvTrackPosTargetSizeFactor; Vector2 mvTrackPosOwnSizeFactor; Vector2 mvTrackClampMin; ///< left top border, in pixels, clamps projected target pos Vector2 mvTrackClampMax; ///< right bottom border Vector2 mvTrackSetSizeFactor; ///< for mbTrackSetSize bool mbTrackClamp; bool mbTrackHideIfClamped; ///< warning, overrides manual visibility bool mbTrackHideIfBehindCam; ///< warning, overrides manual visibility bool mbTrackClampMaxXIfBehindCam; bool mbTrackClampMaxYIfBehindCam; bool mbTrackSetSize; ///< see also mvTrackSetSizeFactor bool mbTrackMouse;
mvTrackClampMin,mvTrackClampMax : clamp to border l,t,r,b (can be smaller than screen e.g. menu bar on a side)
example for a simple marker over an object
function MakeObjectHudMarker (trackgfx,col)
local mat = GetPlainTextureMat("raute.png")
mat = GetHuedMat(mat,1,1,1, 1,1,1,0.5) -- white color, halftransparent
local e = 32 -- image-size
local hudmarker = guimaker.MakePlane(gHudMarkerDialogLayer.panel,mat,-0.5*e,-0.5*e,e,e)
hudmarker.gfx:SetTrackOffset(-0.5*e,-0.5*e)
hudmarker.gfx:SetTrackPosSceneNode(trackgfx)
hudmarker.gfx.mbTrackHideIfClamped = false
hudmarker.gfx.mbTrackHideIfBehindCam = false
local vw,vh = GetViewportSize()
hudmarker.gfx.mbTrackClamp = true
hudmarker.gfx.mvTrackClampMin = {0,0}
hudmarker.gfx.mvTrackClampMax = {vw,vh}
return hudmarker
end
