Marisa Kirisame
931f89832c
Prefixed mk_math classes for cross-compat with any other mods that use them. Fixed incorrect uses of gametic. Fixed crash caused by incorrect ordering of PendingWeapon checks.
72 lines
2.5 KiB
Text
72 lines
2.5 KiB
Text
/*
|
|
Coordinate Utility helper class.
|
|
(C)2018 Marisa Kirisame, UnSX Team.
|
|
Released under the GNU Lesser General Public License version 3 (or later).
|
|
See https://www.gnu.org/licenses/lgpl-3.0.txt for its terms.
|
|
*/
|
|
|
|
Class dt_CoordUtil
|
|
{
|
|
// projects a world point onto screen
|
|
// view matrix setup mostly pulled from gutawer's code
|
|
static Vector3 WorldToScreen( Vector3 vect, Vector3 eye, double pitch, double yaw, double roll, double vfov )
|
|
{
|
|
double ar = Screen.getWidth()/double(Screen.getHeight());
|
|
double fovr = (ar>=1.3)?1.333333:ar;
|
|
double fov = 2*atan(tan(clamp(vfov,5,170)*0.5)/fovr);
|
|
float pr = level.pixelstretch;
|
|
double angx = cos(pitch);
|
|
double angy = sin(pitch)*pr;
|
|
double alen = sqrt(angx*angx+angy*angy);
|
|
double apitch = asin(angy/alen);
|
|
double ayaw = yaw-90;
|
|
// rotations
|
|
dt_Matrix4 mRoll = dt_Matrix4.rotate((0,0,1),roll);
|
|
dt_Matrix4 mPitch = dt_Matrix4.rotate((1,0,0),apitch);
|
|
dt_Matrix4 mYaw = dt_Matrix4.rotate((0,-1,0),ayaw);
|
|
// scaling
|
|
dt_Matrix4 mScale = dt_Matrix4.identity();
|
|
mScale.set(1,1,pr);
|
|
// YZ swap
|
|
dt_Matrix4 mYZ = dt_Matrix4.create();
|
|
mYZ.set(0,0,1);
|
|
mYZ.set(2,1,1);
|
|
mYZ.set(1,2,-1);
|
|
mYZ.set(3,3,1);
|
|
// translation
|
|
dt_Matrix4 mMove = dt_Matrix4.identity();
|
|
mMove.set(3,0,-eye.x);
|
|
mMove.set(3,1,-eye.y);
|
|
mMove.set(3,2,-eye.z);
|
|
// perspective
|
|
dt_Matrix4 mPerspective = dt_Matrix4.perspective(fov,ar,5,65535);
|
|
// full matrix
|
|
dt_Matrix4 mView = mRoll.mul(mPitch);
|
|
mView = mView.mul(mYaw);
|
|
mView = mView.mul(mScale);
|
|
mView = mView.mul(mYZ);
|
|
mView = mView.mul(mMove);
|
|
dt_Matrix4 mWorldToScreen = mPerspective.mul(mView);
|
|
return mWorldToScreen.vmat(vect);
|
|
}
|
|
|
|
// converts a projected screen position to 2D canvas coords
|
|
// thanks once again to gutawer for making this thing screenblocks-aware
|
|
// [NEW] added second return value: true if the point has valid depth (i.e.: it's not behind view)
|
|
// [TODO] handle forced aspect ratio (e.g.: 320x200 scaling)
|
|
static Vector2, bool ToViewport( Vector3 screenpos, bool scrblocks = true )
|
|
{
|
|
if ( scrblocks )
|
|
{
|
|
int winx, winy, winw, winh;
|
|
[winx,winy,winw,winh] = Screen.getViewWindow();
|
|
int sh = Screen.getHeight();
|
|
int ht = sh;
|
|
int screenblocks = CVar.GetCVar("screenblocks",players[consoleplayer]).getInt();
|
|
if ( screenblocks < 10 ) ht = (screenblocks*sh/10)&~7;
|
|
int bt = sh-(ht+winy-((ht-winh)/2));
|
|
return (winx,sh-bt-ht)+((screenpos.x+1)*winw,(-screenpos.y+1)*ht)*0.5, (screenpos.z<=1.0);
|
|
}
|
|
else return ((screenpos.x+1)*Screen.getWidth(),(-screenpos.y+1)*Screen.getHeight())*0.5, (screenpos.z<=1.0);
|
|
}
|
|
}
|