Marisa the Magician
e8b9a55378
- CORRECTPIXELSTRETCH where needed on models. - Replace CoordUtil.GetAxes with quaternion version.
74 lines
2.3 KiB
Text
74 lines
2.3 KiB
Text
// gutamatics projection data caching and other functions from SWWM GZ
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Struct dt_ProjectionData
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{
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dt_GM_Matrix wtc;
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int viewx, viewy, vieww, viewh;
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}
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Class dt_Utility
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{
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// gutamatics caching
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static clearscope void PrepareProjData( out dt_ProjectionData d, Vector3 viewpos, double angle, double pitch, double roll, double fov )
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{
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double aspect = Screen.GetAspectRatio();
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// vertical fov
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double fovratio = (aspect>=1.3)?1.333333:aspect;
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double fovy = 2.*atan(tan(clamp(fov,5,170)/2.)/fovratio);
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// world→clip matrix
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dt_GM_Matrix view = dt_GM_Matrix.view(viewpos,angle,pitch,roll);
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dt_GM_Matrix perp = dt_GM_Matrix.perspective(fovy,aspect,5,65535);
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d.wtc = perp.multiplyMatrix(view);
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// screen coord data
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int sblocks = CVar.FindCVar('screenblocks').GetInt();
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int viewx, viewy, vieww, viewh;
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[viewx, viewy, vieww, viewh] = Screen.GetViewWindow();
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int sh = Screen.GetHeight();
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int h = sh;
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if ( sblocks < 10 ) h = (sblocks*sh/10)&~7;
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int bottom = sh-(h+viewy-((h-viewh)/2));
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d.viewx = viewx;
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d.viewy = sh-bottom-h;
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d.vieww = vieww;
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d.viewh = h;
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}
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static clearscope Vector3 ProjectPoint( dt_ProjectionData d, Vector3 worldpos )
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{
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return d.wtc.multiplyVector3(worldpos).asVector3();
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}
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static clearscope Vector2 NDCToViewport( dt_ProjectionData d, Vector3 ndc )
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{
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return (d.viewx,d.viewy)+(((ndc.x+1)*d.vieww)/2,((-ndc.y+1)*d.viewh)/2);
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}
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// checks if a point is inside the viewport
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static clearscope bool TestScreenBounds( dt_ProjectionData d, Vector2 vpos )
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{
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return ((vpos.x == clamp(vpos.x,d.viewx,d.viewx+d.vieww))
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&& (vpos.y == clamp(vpos.y,d.viewy,d.viewy+d.viewh)));
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}
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static clearscope Vector3 Vec3FromAngle( double angle, double pitch )
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{
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return (cos(angle)*cos(pitch),sin(angle)*cos(pitch),-sin(pitch));
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}
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static clearscope Vector3 CircleOffset( Vector3 y, Vector3 z, double angle, double radius )
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{
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return (y*cos(angle)*radius+z*sin(angle)*radius);
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}
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static clearscope Vector3 ConeSpread( Vector3 x, Vector3 y, Vector3 z, double angle, double spread )
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{
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return (x+y*cos(angle)*spread+z*sin(angle)*spread).unit();
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}
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static clearscope Vector3, Vector3, Vector3 GetAxes( double angle, double pitch, double roll )
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{
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Vector3 x = (1,0,0), y = (0,-1,0), z = (0,0,1);
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Quat r = Quat.FromAngles(angle,pitch,roll);
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return r*x, r*y, r*z;
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}
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}
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