Unity3d Brush Implementation Series 02-UNITYGL

GL is more powerful, but there are fewer open interfaces in unity. (Personal Edition is not available)

I am using two cameras in the project, one set to the ambiguous mode, render to Rendertexture, and another render main scene.

1  Public classGlline:monobehaviour2 {3     /*GL is relatively low-level , difficult to control, unity Open Interface is not many, can not use much,4 * have time to continue studying in-depth study5      *6      */7     PrivateList<vector3>Linepos;8     Private BOOLStartdraw =false;9     PrivateVector3 oldmouseposition;Ten      Public floatStepsize = 80f;//step of each difference One      Public floatsize = 60f;//width of each individual module A      PublicMaterial linematerial; -      PublicColor color =color.red; -      Public floatRoud = -; the  -     voidStart () -     { -  +Linepos =NewList<vector3>(); -  +  A     } at  -     voidUpdate () -     { -         if(Input.getmousebuttondown (0)) -         { -Oldmouseposition =input.mouseposition; incolor =color.red; -Startdraw =true; to         } +         if(Input.getmousebuttonup (0)) -         { theStartdraw =false; *Linepos.clear ();//Clean drawing points, otherwise each frame will be redrawn $         }Panax Notoginseng         if(Input.getmousebuttondown (1)) -         { theOldmouseposition =input.mouseposition; +Startdraw =true; Acolor =Color.White; the         } +         if(Input.getmousebuttonup (1)) -         { $Startdraw =false; $Linepos.clear ();//Clean drawing points, otherwise each frame will be redrawn -         } -         if(Startdraw) the         { -             if(Stepsize = =0)return;Wuyi             varNewmouseposition =(Vector2) input.mouseposition; the             if(Vector2.distance (Newmouseposition, oldmouseposition) < size)return; -             floatStepcount = Vector2.distance (oldmouseposition, newmouseposition)/stepsize +1; Wu              for(inti =0; i < Stepcount; i++) -             { About                 varSubmouseposition = Vector3.lerp (oldmouseposition, newmouseposition, I/stepcount); $ Linepos.add (submouseposition); -             } -Oldmouseposition =newmouseposition; -  A         } +  the  -  $  the  the     } the     /// <summary> the     ///Automatic engine invocation -     /// </summary> in      Public voidOnrenderobject () the     { the GL. Pushmatrix (); AboutLinematerial.setpass (0); the          for(inti =0; I < Linepos.count-1; i++) the         { theVector3 startpos =Linepos[i]; +Vector3 Endpos = linepos[i +1]; - Drawlinefun (startpos.x, Startpos.y, endpos.x, endpos.y); the         }Bayi GL. Popmatrix (); the  the     } -     voidDrawlinefun (floatX1,floatY1,floatX2,floaty2) -     { the  theDrawRect (X1-roud, Y1-roud,2*Roud, color); the     } the  -     voidDrawRect (floatXfloatYfloatwidth, Color mycolor) the     { the  the         floatHeight =width;94         //Drawing 2D Images the GL. Loadortho (); the GL. Begin (GL. QUADS); the GL. Color (MyColor);98Gl. TexCoord3 (0,0,0);//set the Paste picture to remove when solid color AboutGl. Vertex3 (X/screen.width, Y/screen.height,0); -Gl. TexCoord3 (0,1,0);//set the Paste picture to remove when solid color101Gl. Vertex3 (X/screen.width, (y + height)/screen.height,0);102Gl. TexCoord3 (1,1,0);//set the Paste picture to remove when solid color103Gl. Vertex3 ((x + width)/screen.width, (y + height)/screen.height,0);104Gl. TexCoord3 (1,0,0);//set the Paste picture to remove when solid color theGl. Vertex3 ((x + width)/screen.width, Y/screen.height,0);106 GL. End ();107 108     }109}

Specific Code

Unity3d Brush Implementation Series 02-UNITYGL