C# RenderTarget.DrawLine方法代碼示例

        public void OnRender(RenderTarget target)
        {
            if(gBorderBrush == null)
            {
                gBackgroundBrush = Brushes.Solid[0xCC555555];
                gBackgroundHoverBrush = Brushes.Solid[0xCC888888];
                gClickBrush = Brushes.Solid[0xFFFF7F00];
                gBackgroundClickedBrush = Brushes.Solid[0xCCBBBBBB];
                gBorderBrush = Brushes.White;
            }

            target.DrawTextLayout(new Vector2(Position.X + Size + 7, Position.Y - 2), mTextDraw, Brushes.White);

            var brush = gBackgroundBrush;
            if (mIsPressed)
                brush = gBackgroundClickedBrush;
            else if (mIsHovered)
                brush = gBackgroundHoverBrush;

            target.FillRectangle(mTargetRect, brush);
            target.DrawRectangle(mTargetRect, gBorderBrush);
            if (!Checked) return;

            target.DrawLine(Position + new Vector2(3, 3), Position + new Vector2(mSize - 3, mSize - 3), gClickBrush,
                mSize / 4.0f);
            target.DrawLine(new Vector2(Position.X + 3, Position.Y + mSize - 3),
                new Vector2(Position.X + mSize - 3, Position.Y + 3), gClickBrush, mSize / 4.0f);
        }

        public void Create3dObjects()
        {
            //Create RenderWindow
            RenderWindowInstance = new ModelRenderWindow();
            FormInstance = RenderWindowInstance.CreateWindow(1080,1240,FormStartPosition.CenterScreen);

            //Create SwapChain
            SwapChainCreator = new ModelSwapChainDesc();
            SwapChainD = SwapChainCreator.CreateSwapChain(2, Usage.RenderTargetOutput, FormInstance.Handle, true, 0, 0, new Rational(60, 1), Format.R8G8B8A8_UNorm, 1,0,SwapChainFlags.AllowModeSwitch, SwapEffect.Discard);

            //Create Device
            Device.CreateWithSwapChain(DriverType.Hardware, DeviceCreationFlags.BgraSupport, SwapChainD, out GraphicsDevice, out NewSwapChain);

            //Create Back buffer
            BackBuffer = Surface.FromSwapChain(NewSwapChain, 0);

            //Create Factory
            FactoryD2D FactoryInstance = new FactoryD2D();

            //Create RenderTarget
            RenderTargetInstance = new ModelRenderTarget();
            RenderTarget = RenderTargetInstance.CreateRenderTarget(SharpDX.Direct2D1.FeatureLevel.Level_DEFAULT, new PixelFormat(Format.Unknown, SharpDX.Direct2D1.AlphaMode.Ignore), RenderTargetType.Default, RenderTargetUsage.None, BackBuffer, FactoryInstance);

            RenderLoop.Run(FormInstance, () =>
            {

                RenderTarget.BeginDraw();
                RenderTarget.Transform = Matrix3x2.Identity;
                RenderTarget.Clear(Color.White);

                using (var brush = new SolidColorBrush(RenderTarget, Color.Red))
                {
                    //for (int x = 0; x < RenderTarget.Size.Width; x += 10)
                    //    RenderTarget.DrawLine(new Vector2(x, 0), new Vector2(x, RenderTarget.Size.Height), brush, 0.5f);

                    //for (int y = 0; y < RenderTarget.Size.Height; y += 10)
                    //    RenderTarget.DrawLine(new Vector2(0, y), new Vector2(RenderTarget.Size.Width, y), brush, 0.5f);
                    RenderTarget.DrawLine(new Vector2(300, 10), new Vector2(300, 300), brush,1.5f);
                   // RenderTarget.FillRectangle(new RectangleF(RenderTarget.Size.Width / 2 - 50, RenderTarget.Size.Height / 2 - 50, 100, 100), brush);
                }

              //  RenderTarget.DrawRectangle(
                   // new RectangleF(RenderTarget.Size.Width / 2 - 100, RenderTarget.Size.Height / 2 - 100, 200, 200),
                   // new SolidColorBrush(RenderTarget, Color.CornflowerBlue));

                RenderTarget.EndDraw();

                NewSwapChain.Present(0, PresentFlags.None);
            });

            RenderTarget.Dispose();
            NewSwapChain.Dispose();
            GraphicsDevice.Dispose();
        }

        public void OnRender(RenderTarget target)
        {
            target.FillRectangle(new RectangleF(0, 0, mSize.X, mSize.Y), Brushes.Solid[0xFF333333]);

            target.PushAxisAlignedClip(new RectangleF(0, 100, mSize.X, mSize.Y - 100), AntialiasMode.Aliased);
            foreach (var label in mMapLabels)
                label.OnRender(target);
            target.PopAxisAlignedClip();

            target.DrawLine(new Vector2(0, 100.0f), new Vector2(mSize.X, 100.0f), Brushes.White);

            mTitleLabel.OnRender(target);
            mLabelScroll.OnRender(target);
        }

        public void OnRender(RenderTarget target)
        {
            var borderStart = new Vector2(mPosition.X + BorderOffsets.X, mPosition.Y);
            var borderEnd = new Vector2(mPosition.X + mSize.X - BorderOffsets.Y, mPosition.Y);

            target.FillRectangle(mTargetRectangle, Brushes.Solid[0xCC333333]);
            target.DrawLine(borderStart, borderEnd, Brushes.White);

            var ot = target.Transform;

            target.Transform *= Matrix3x2.Translation(Position.X, Position.Y);
            foreach (var item in Items)
                item.OnRender(target);

            target.Transform = ot;
        }

        public void OnRender(RenderTarget target)
        {
            UpdateCaret();

            var transform = target.Transform;
            target.Transform *= Matrix3x2.Translation(Position);

            target.AntialiasMode = AntialiasMode.Aliased;
            target.FillRectangle(new RectangleF(0, 0, mSize.X, mSize.Y), Brushes.Solid[0xCC111111]);
            target.DrawRectangle(new RectangleF(0, 0, mSize.X, mSize.Y), Brushes.Solid[System.Drawing.Color.White]);
            target.PushAxisAlignedClip(new RectangleF(4, 0, mSize.X - 8, mSize.Y), AntialiasMode.Aliased);
            target.DrawTextLayout(new Vector2(mStartPosition, 0), mTextDraw, Brushes.Solid[0xFFFFFFFF]);
            target.PopAxisAlignedClip();
            if (mCaretVisible && mIsFocused)
            {
                target.DrawLine(new Vector2(mCaretOffset, 4), new Vector2(mCaretOffset, 23),
                    Brushes.Solid[0xFFFFFFFF], 2.0f);
            }

            target.Transform = transform;
        }

        private void DrawFpsSamples(RenderTarget target)
        {
            var maxValue = mFpsSamples.Max();
            var minValue = mFpsSamples.Min();
            if (MathUtil.WithinEpsilon(minValue, maxValue, 0.5f)) maxValue = minValue + 10;

            var baseOffset = 0.0f;
            var step = mSize.X / 19.0f;
            var diff = (DateTime.Now - mLastFpsSample);

            if (mFpsSamples.Count == 20)
                baseOffset = (float)diff.TotalSeconds * step;

            var curPos = mFpsRectangle.Left - baseOffset;
            var endY = mFpsRectangle.Bottom - 5;
            var height = mFpsRectangle.Height - 20;

            target.PushAxisAlignedClip(mFpsRectangle, AntialiasMode.Aliased);

            for (var i = 1; i < mFpsSamples.Count; ++i)
            {
                var sat = (mFpsSamples[i] - minValue) / (maxValue - minValue);
                var satPrev = (mFpsSamples[i - 1] - minValue) / (maxValue - minValue);
                target.DrawLine(new Vector2(curPos, endY - satPrev * height), new Vector2(curPos + step, endY - sat * height), Brushes.White);
                curPos += step;
            }

            var satLast = (mFpsSamples.Last() - minValue) / (maxValue - minValue);
            target.DrawLine(new Vector2(curPos, endY - satLast * height),
                new Vector2(curPos + (float)diff.TotalSeconds * step, endY - satLast * height), Brushes.White);

            target.PopAxisAlignedClip();

            mFpsMin.Text = minValue.ToString("F2");
            mFpsMax.Text = maxValue.ToString("F2");

            target.DrawTextLayout(new Vector2(Position.X + 3.0f, mFpsRectangle.Top - 20.0f), mFpsMax, Brushes.White);
            target.DrawTextLayout(new Vector2(Position.X + 3.0f, mFpsRectangle.Bottom + 2.0f), mFpsMin, Brushes.White);
        }

        private void DrawMemorySamples(RenderTarget target)
        {
            var maxValue = mMemorySamples.Max();
            var minValue = mMemorySamples.Min();
            if (minValue == maxValue) maxValue = minValue + 50;

            var baseOffset = 0.0f;
            var step = mSize.X / 19.0f;
            var diff = (DateTime.Now - mLastMemorySample);

            if (mMemorySamples.Count == 20)
                baseOffset = ((float)diff.TotalSeconds / 0.5f) * step;

            var curPos = mMemoryRectangle.Left - baseOffset;
            var endY = mMemoryRectangle.Bottom - 5;
            var height = mMemoryRectangle.Height - 20;

            target.PushAxisAlignedClip(mMemoryRectangle, AntialiasMode.Aliased);

            for (var i = 1; i < mMemorySamples.Count; ++i)
            {
                var sat = (mMemorySamples[i] - (float)minValue) / (maxValue - minValue);
                var satPrev = (mMemorySamples[i - 1] - (float)minValue) / (maxValue - minValue);
                target.DrawLine(new Vector2(curPos, endY - satPrev * height), new Vector2(curPos + step, endY - sat * height), Brushes.White);
                curPos += step;
            }

            var satLast = (mMemorySamples.Last() - (float) minValue) / (maxValue - minValue);
            target.DrawLine(new Vector2(curPos, endY - satLast * height),
                new Vector2(curPos + ((float)diff.TotalSeconds / 0.5f) * step, endY - satLast * height), Brushes.White);

            target.PopAxisAlignedClip();

            DrawMemoryStrings(target, maxValue, minValue);
        }

        /// <summary>
        /// render the circle to specific render target of Direct2D1
        /// </summary>
        /// <param name="renderTarget"></param>
        public void Render2D( RenderTarget renderTarget, SharpDX.Direct2D1.Brush brush )
        {
            // if the brush is dirty renew it
            if ( m_isLineColorBrushDirty ) {
                // clean the color brush
                if ( m_lineColorBrush != null )
                    m_lineColorBrush.Dispose();

                // allocate a new one
                m_lineColorBrush = new SolidColorBrush( renderTarget, m_lineColor );

                // clean the flag
                m_isLineColorBrushDirty = false;
            }

            if (m_useDefaultColor || m_lineColorBrush == null)
            {
                renderTarget.DrawLine(m_pStart, m_pEnd, brush, m_lineWidth);
            }
            else
            {
                // draw
                renderTarget.DrawLine(m_pStart, m_pEnd, m_lineColorBrush, m_lineWidth);
            }
        }

        public virtual void Draw(RenderTarget g)
        {
            //Texture draw call
            if (Texture != null)
            {
                DrawingPositionRect = new RectangleF(X - Game.VIEWPORT.X, Y - Game.VIEWPORT.Y, Width, Height);
                Texture.DrawTexture(g, new RectangleF(X, Y, Width, Height));
            }

            //Debug drawing options
            if (Config.DEBUG_MODE == DebugMode.DISPLAY_HITBOX)
            {
                g.DrawRectangle(new RectangleF(Hitbox.X, Hitbox.Y, Hitbox.Width, Hitbox.Height), Resources.SCBRUSH_RED);
            }
            else if (Config.DEBUG_MODE == DebugMode.DISPLAY_RECT)
            {
                g.DrawRectangle(new RectangleF(X, Y, Width, Height), Resources.SCBRUSH_RED);
                g.DrawLine(new Vector2(X, Y), new Vector2(X + Width, Y + Height), Resources.SCBRUSH_RED);
                g.DrawLine(new Vector2(X, Y + Height), new Vector2(X + Width, Y), Resources.SCBRUSH_RED);
            }
            /* Used for debug purposes
            if (drawHitbox)
                g.DrawRectangle(Hitbox, Resources.SCBRUSH_BLACK, 3f);
            */
        }