FlatRedBall.Gui.TimeLine.GetNumberOfVerticesToDraw C# (CSharp) Method

        internal override int GetNumberOfVerticesToDraw()                                       
		{
            if (GuiManagerDrawn)
            {
                int numVertices = base.GetNumberOfVerticesToDraw(); // takes care of the base window and the position bar which is a button

                numVertices += 6; // the horizontal bar

                double incrementsPassed = mStart / mVerticalBarIncrement;
                if (incrementsPassed != (int)mStart / mVerticalBarIncrement)
                    incrementsPassed = (int)incrementsPassed + 1;

                double xPosOfVerticalBar = incrementsPassed * mVerticalBarIncrement;

                // now that we know where the first xPosOfVerticalBar is, we can calculate how many large increment lines/values we'll have.

                float offset = (float)((incrementsPassed * mVerticalBarIncrement) - mStart);

                if (mLargeIncrementValues.Length != 1 + (int)((mValueWidth - offset) / mVerticalBarIncrement))
                    mLargeIncrementValues = new float[1 + (int)((mValueWidth - offset) / mVerticalBarIncrement)];

                int i = 0;

                while (xPosOfVerticalBar <= mStart + mValueWidth && i < mLargeIncrementValues.Length)
                {
                    numVertices += 6;

                    switch (this.mTimeUnitDisplayed)
                    {
                        case TimeUnit.Millisecond:
                            mLargeIncrementValues[i] = (float)(xPosOfVerticalBar) * 1000;
                            break;
                        case TimeUnit.Second:
                            mLargeIncrementValues[i] = (float)(xPosOfVerticalBar);
                            break;

                    }
                    i++;
                    xPosOfVerticalBar += mVerticalBarIncrement;
                }

                incrementsPassed = mStart / mSmallVerticalBarIncrement;
                if (incrementsPassed != (int)mStart / mSmallVerticalBarIncrement)
                    incrementsPassed = (int)incrementsPassed + 1;


                xPosOfVerticalBar = incrementsPassed * mSmallVerticalBarIncrement;
                while (xPosOfVerticalBar <= mStart + mValueWidth)
                {
                    numVertices += 6;
                    xPosOfVerticalBar += mSmallVerticalBarIncrement;
                }

                #region Include the number of text objects to write

                if (HasChangedSinceLastCache)
                {
                    UpdateIncrementValueCache(mLargeIncrementValues);
                }

                if (mShowValues)
                {
                    for (i = 0; i < mCachedIncrementValues.Count; i++)
                    {
                        numVertices += 6 * mCachedIncrementValues[i].Length;

                    }
                }

                #endregion

                return numVertices;
            }
            else
                return 0;

		}