Removed weird example file

examples/core/core_rotate_by_quat.c

@@ -1,83 +0,0 @@
-#include "raylib.h"
-#include "rlgl.h" // just to change line width
-#include "raymath.h"
-
-#define windowWidth 1280
-#define windowHeight 720
-
-Vector3 Vector3MultiplyQuaternion(Vector3 v, Quaternion q)
-{
-    Vector3 r, qv, uv, uuv;
-    
-    qv.x = q.x;
-    qv.y = q.y;
-    qv.z = q.z;
-    
-    uv = Vector3CrossProduct(qv, v);
-    uuv = Vector3CrossProduct(qv, uv);
-    
-    uv = Vector3Scale(uv, 2.f*q.w);
-    uuv = Vector3Scale(uuv, 2.0f);
-    
-    r = Vector3Add(v, uv);
-    r = Vector3Add(r, uuv);
-    
-    return r;
-}
-
-int main(void)
-{
-    SetTraceLogLevel( LOG_ALL );
-    SetConfigFlags( FLAG_VSYNC_HINT | FLAG_MSAA_4X_HINT );
-    InitWindow( windowWidth, windowHeight, "Raylib - template" );
-    
-    Camera camera = { 0 };
-    camera.position = (Vector3){ 0.0f, 1.0f, 4.0f };
-    camera.target = (Vector3){ 0.0f, 0.0f, 0.0f };
-    camera.up = (Vector3){ 0.0f, 1.0f, 0.0f };
-    camera.fovy = 45.0f;
-    camera.projection = CAMERA_PERSPECTIVE;
-    
-    Vector3 ang = { 0 };
-    Vector3 qv = { 0 };
-    Vector3 mv = { 0 };
-    Vector3 bv = { 0 };
-    Quaternion q;
-    
-    float dT = 0;
-    
-    rlSetLineWidth(4);
-    while ( !WindowShouldClose() )
-    {
-        dT = GetFrameTime();
-        
-        ang.x += .7f * dT;
-        ang.y += .55 * dT;
-        ang.z -= 2.75 * dT;
-        
-        q = QuaternionFromEuler(ang.x, ang.y, ang.z);
-        qv = Vector3MultiplyQuaternion((Vector3){0,0,1}, q);
-        
-        Matrix m = QuaternionToMatrix(q);
-        mv = Vector3Transform((Vector3){0,0,1},m);
-        
-        bv = Vector3RotateByQuaternion((Vector3){0,0,1}, q);
-        
-        BeginDrawing();
-        ClearBackground( (Color){64,128,255,255} );
-        
-        BeginMode3D( camera );
-        DrawLine3D((Vector3){0,0,0}, qv, GREEN);
-        DrawLine3D((Vector3){-.1,0,0}, mv, YELLOW);
-        DrawLine3D((Vector3){.1,0,0}, bv, RED);
-        
-        DrawGrid( 10, 1.0f );
-        
-        EndMode3D();
-        
-        EndDrawing();
-    }
-    
-    CloseWindow();
-    return 0;
-}