java绘制复杂图形并输出图片

package com.inspur.graphics; import java.awt.Color; import java.awt.Font; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.image.BufferedImage; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import javax.imageio.ImageIO; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGImageEncoder; public class DrawGraphics { BufferedImage buffImg = null ; void createImage(String fileLocation) { try { FileOutputStream fos = new FileOutputStream(fileLocation); BufferedOutputStream bos = new BufferedOutputStream(fos); JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos); encoder.encode(buffImg); bos.close(); } catch (Exception e) { e.printStackTrace(); } } /** * 绘制Board面板 */ private void drawPanel() { // 1.1.设置基本的属性 int imgWidth = 985 ; int imgHeight = 0 ; // 根据插框排列的层数确定所需高度 // 1.2.插框层数和所需面板高度数值的计算 int rackSize = 6 ; // 插框数量 int rackSizeInLayer = 3 ; // 每层插框数量 int rackLayerSize = 0 ; // 插框排列层数 if (rackSize % rackSizeInLayer == 0) { rackLayerSize = rackSize / rackSizeInLayer ; } else { rackLayerSize = rackSize / rackSizeInLayer + 1 ; } imgHeight = rackLayerSize * 181 + (rackLayerSize + 1) * 40 ; // 1.3.设置画布参数,绘制画布 buffImg = new BufferedImage(imgWidth, imgHeight, BufferedImage.TYPE_INT_BGR) ; Graphics2D grahpics2D = (Graphics2D) buffImg.getGraphics() ; // 消除线条锯齿 grahpics2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); // font set Font font = new Font(Font.SANS_SERIF, Font.PLAIN, 10) ; grahpics2D.setFont(font) ; // backgroundColor grahpics2D.setColor(new Color(238, 238, 238)) ; // 绘制Board面板 grahpics2D.fillRect(0, 0, imgWidth, imgHeight) ; // 2.绘制插框 for (int i = 0; i < rackLayerSize; i++) { int rackYOffset = 40 ; rackYOffset += i * (40 + 181) ; if (i == i - 1) { rackSizeInLayer = rackSize % 3 ; } for (int j = 0; j < rackSizeInLayer; j++) { int rackXOffSet = 32 ; rackXOffSet += j * (36 + 283) ; drawRack(grahpics2D, rackXOffSet, rackYOffset); } } // 4.释放此图形的上下文并释放它所使用的所有系统资源,调用函数输出图片 grahpics2D.dispose(); createImage("D:\\works\\graphics\\test.png"); } /** * 在面板上添加插框 * @param grahpics2D * @param rackXOffset 插框相对于Panel横向偏移量 * @param rackYOffset 插框相对于Panel竖向偏移量 */ private void drawRack(Graphics2D grahpics2D, int rackXOffset, int rackYOffset) { String rackUrl = "D:\\works\\graphics\\rack.png" ; // 1.1.在画布上绘制插框 BufferedImage rackImg = null ; try { rackImg = ImageIO.read(new File(rackUrl)); } catch (IOException e) { e.printStackTrace(); } grahpics2D.drawImage(rackImg, rackXOffset, rackYOffset, null); // 1.2.Rack title grahpics2D.setColor(Color.BLACK); grahpics2D.drawString("SUBRACK-0", rackXOffset + rackImg.getWidth() / 2 - 36, rackYOffset + 28) ; // 2.为插框绘制插槽 drawSlot(grahpics2D, 28, rackXOffset, rackYOffset); } /** * 在插框上绘制插槽 * @param grahpics2D * @param slotNum 插框插槽数量 * @param baseX 插框插槽横向偏移基量(插槽跟着插框走) * @param baseY 插框插槽竖向偏移基量 */ private void drawSlot(Graphics2D grahpics2D, int slotNum, int baseX, int baseY) { String slotContainerBgUrl = "D:\\works\\graphics\\slot_container_bg.png" ; // 1.基础数据确定 int rackLeftWidth = 16 ; // 根据使用的rackImg确定的值 int slotWidth = 18 ; // 卡槽宽度,根据示例图确定的数值 int slotHeight = 48 ; // 卡槽高度,根据示例图确定的数值 int topSlotContainerOffset = 32 ; // 上部插槽编号容器相对于插框顶部的偏移量 int bottomSlotContainerOffset = 144 ; // 下部插槽编号容器相对于插框顶部的偏移量 int topSlotYOffset = 48 ; // 上部插槽相对于插框顶部的偏移量 int bottomSlotYOffset = 96 ; // 下部插槽相对于插框顶部的偏移量 // 2.绘制插槽编号容器 BufferedImage slotContainerBgImg = null ; try { slotContainerBgImg = ImageIO.read(new File(slotContainerBgUrl)) ; } catch (IOException e) { e.printStackTrace(); } // 2.1.top slot conatiner grahpics2D.drawImage(slotContainerBgImg, baseX + rackLeftWidth, baseY + topSlotContainerOffset, null) ; // 2.2.bottom slot conatiner grahpics2D.drawImage(slotContainerBgImg, baseX + rackLeftWidth, baseY + bottomSlotContainerOffset, null) ; // 3.绘制插槽(分两层) int layerSlotNum = slotNum / 2 ; if (slotNum % 2 != 0) { // 插槽数量为奇数 layerSlotNum += 1 ; } // 3.1.solt-bottom for (int i = 0; i < layerSlotNum; i++) { // 绘制插槽矩形 grahpics2D.setColor(Color.LIGHT_GRAY); int slotXOffset = rackLeftWidth ; // 插槽相对于插框左侧的偏移量 slotXOffset += i * slotWidth ; grahpics2D.drawRect(baseX + slotXOffset, baseY + bottomSlotYOffset, slotWidth, slotHeight) ; // 为插槽插卡(显示名称 + 颜色) if (i != 4 && i != 5) { insertCard(grahpics2D, baseX + slotXOffset, baseY + bottomSlotYOffset, i); } drawSlotNo(grahpics2D, i, baseX + slotXOffset, baseY + bottomSlotContainerOffset + 12); // 12为卡槽编号在其卡槽中的y偏移量 } // 3.2.solt-top for (int i = layerSlotNum; i < slotNum; i++) { // 绘制插槽矩形 grahpics2D.setColor(Color.LIGHT_GRAY); int slotXOffset = rackLeftWidth ; slotXOffset += (i - layerSlotNum) * slotWidth ; grahpics2D.drawRect(baseX + slotXOffset, baseY + topSlotYOffset, slotWidth, slotHeight) ; // 为插槽插卡(颜色+显示名称) if (i != 16 && i != 17) { insertCard(grahpics2D, baseX + slotXOffset, baseY + topSlotYOffset, i); } drawSlotNo(grahpics2D, i, baseX + slotXOffset, baseY + topSlotContainerOffset + 12); // 12为卡槽编号在其卡槽中的y偏移量 } } /** * 在卡槽容器内绘制卡槽编号 * @param grahpics2D * @param i 第i个卡槽编号(0开始) * @param slotXOffset 卡槽相对于其所在插框左侧偏移量 * @param slotYOffset 卡槽相对于其所在插框顶部偏移量 */ private void drawSlotNo(Graphics2D grahpics2D, int i, int slotXOffset, int slotYOffset) { String code = null ; // 在slot bottom container下写插槽编码 grahpics2D.setColor(Color.BLACK); code = i + "" ; if (i < 10) { code = "0" + i ; } grahpics2D.drawString(code, slotXOffset + 3, slotYOffset); } /** * 向插槽中插卡的模拟实现 * @param grahpics2D 画布实例 * @param baseX 基础X坐标 * @param baseY 基础Y坐标 * @param slotIndex 卡槽索引(第几个由0开始) */ private void insertCard(Graphics2D grahpics2D, int baseX, int baseY, int slotIndex) { // TODO:在该方法内模拟取出对应的Card baseX += 2 ;// 输出图片效果调整 baseY += 2 ; int cardWidth = 17 ; // 板卡宽度(稍微比卡槽小) int cardHeight = 46 ; // 板卡高度(稍微比插槽小) int fontOffset = 5 ; // 板卡上文字正常情况 if (slotIndex == 24 || slotIndex == 26) { // temp:两卡在一插槽内 cardWidth = cardWidth * 2 + 1 ; fontOffset = cardWidth / 2 - 5 / 2 ; // 5 字体宽度 } if (slotIndex != 25 && slotIndex != 27) { String cardSpecNO = "SPUA" ; if (baseY < 95) { // 95 temp if (slotIndex == 24 || slotIndex == 26)