cyclicxyitemrenderer.html

jfreechart1。0。2的api。

<FONT color="green">142</FONT>         *                        (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.142"></a>
<FONT color="green">143</FONT>         * @param pass  the current pass index.<a name="line.143"></a>
<FONT color="green">144</FONT>         */<a name="line.144"></a>
<FONT color="green">145</FONT>        public void drawItem(Graphics2D g2, <a name="line.145"></a>
<FONT color="green">146</FONT>                             XYItemRendererState state,<a name="line.146"></a>
<FONT color="green">147</FONT>                             Rectangle2D dataArea, <a name="line.147"></a>
<FONT color="green">148</FONT>                             PlotRenderingInfo info, <a name="line.148"></a>
<FONT color="green">149</FONT>                             XYPlot plot,<a name="line.149"></a>
<FONT color="green">150</FONT>                             ValueAxis domainAxis, <a name="line.150"></a>
<FONT color="green">151</FONT>                             ValueAxis rangeAxis, <a name="line.151"></a>
<FONT color="green">152</FONT>                             XYDataset dataset,<a name="line.152"></a>
<FONT color="green">153</FONT>                             int series, <a name="line.153"></a>
<FONT color="green">154</FONT>                             int item, <a name="line.154"></a>
<FONT color="green">155</FONT>                             CrosshairState crosshairState, <a name="line.155"></a>
<FONT color="green">156</FONT>                             int pass) {<a name="line.156"></a>
<FONT color="green">157</FONT>    <a name="line.157"></a>
<FONT color="green">158</FONT>            if ((!getPlotLines()) || ((!(domainAxis instanceof CyclicNumberAxis)) <a name="line.158"></a>
<FONT color="green">159</FONT>                    &amp;&amp; (!(rangeAxis instanceof CyclicNumberAxis))) || (item &lt;= 0)) {<a name="line.159"></a>
<FONT color="green">160</FONT>                super.drawItem(g2, state, dataArea, info, plot, domainAxis, <a name="line.160"></a>
<FONT color="green">161</FONT>                        rangeAxis, dataset, series, item, crosshairState, pass);<a name="line.161"></a>
<FONT color="green">162</FONT>                return;<a name="line.162"></a>
<FONT color="green">163</FONT>            }<a name="line.163"></a>
<FONT color="green">164</FONT>    <a name="line.164"></a>
<FONT color="green">165</FONT>            // get the previous data point...<a name="line.165"></a>
<FONT color="green">166</FONT>            double xn = dataset.getXValue(series, item - 1);<a name="line.166"></a>
<FONT color="green">167</FONT>            double yn = dataset.getYValue(series, item - 1);<a name="line.167"></a>
<FONT color="green">168</FONT>            // If null, don't draw line =&gt; then delegate to parent<a name="line.168"></a>
<FONT color="green">169</FONT>            if (Double.isNaN(yn)) {<a name="line.169"></a>
<FONT color="green">170</FONT>                super.drawItem(g2, state, dataArea, info, plot, domainAxis, <a name="line.170"></a>
<FONT color="green">171</FONT>                        rangeAxis, dataset, series, item, crosshairState, pass);<a name="line.171"></a>
<FONT color="green">172</FONT>                return;<a name="line.172"></a>
<FONT color="green">173</FONT>            }<a name="line.173"></a>
<FONT color="green">174</FONT>            double[] x = new double[2];<a name="line.174"></a>
<FONT color="green">175</FONT>            double[] y = new double[2];<a name="line.175"></a>
<FONT color="green">176</FONT>            x[0] = xn;<a name="line.176"></a>
<FONT color="green">177</FONT>            y[0] = yn;<a name="line.177"></a>
<FONT color="green">178</FONT>            <a name="line.178"></a>
<FONT color="green">179</FONT>            // get the data point...<a name="line.179"></a>
<FONT color="green">180</FONT>            xn = dataset.getXValue(series, item);<a name="line.180"></a>
<FONT color="green">181</FONT>            yn = dataset.getYValue(series, item);<a name="line.181"></a>
<FONT color="green">182</FONT>            // If null, don't draw line at all<a name="line.182"></a>
<FONT color="green">183</FONT>            if (Double.isNaN(yn)) {<a name="line.183"></a>
<FONT color="green">184</FONT>                return;<a name="line.184"></a>
<FONT color="green">185</FONT>            }<a name="line.185"></a>
<FONT color="green">186</FONT>            x[1] = xn;<a name="line.186"></a>
<FONT color="green">187</FONT>            y[1] = yn;<a name="line.187"></a>
<FONT color="green">188</FONT>    <a name="line.188"></a>
<FONT color="green">189</FONT>            // Now split the segment as needed<a name="line.189"></a>
<FONT color="green">190</FONT>            double xcycleBound = Double.NaN;<a name="line.190"></a>
<FONT color="green">191</FONT>            double ycycleBound = Double.NaN;<a name="line.191"></a>
<FONT color="green">192</FONT>            boolean xBoundMapping = false, yBoundMapping = false;<a name="line.192"></a>
<FONT color="green">193</FONT>            CyclicNumberAxis cnax = null, cnay = null;<a name="line.193"></a>
<FONT color="green">194</FONT>    <a name="line.194"></a>
<FONT color="green">195</FONT>            if (domainAxis instanceof CyclicNumberAxis) {<a name="line.195"></a>
<FONT color="green">196</FONT>                cnax = (CyclicNumberAxis) domainAxis;<a name="line.196"></a>
<FONT color="green">197</FONT>                xcycleBound = cnax.getCycleBound();<a name="line.197"></a>
<FONT color="green">198</FONT>                xBoundMapping = cnax.isBoundMappedToLastCycle();<a name="line.198"></a>
<FONT color="green">199</FONT>                // If the segment must be splitted, insert a new point<a name="line.199"></a>
<FONT color="green">200</FONT>                // Strict test forces to have real segments (not 2 equal points) <a name="line.200"></a>
<FONT color="green">201</FONT>                // and avoids division by 0 <a name="line.201"></a>
<FONT color="green">202</FONT>                if ((x[0] != x[1]) <a name="line.202"></a>
<FONT color="green">203</FONT>                        &amp;&amp; ((xcycleBound &gt;= x[0]) <a name="line.203"></a>
<FONT color="green">204</FONT>                        &amp;&amp; (xcycleBound &lt;= x[1]) <a name="line.204"></a>
<FONT color="green">205</FONT>                        || (xcycleBound &gt;= x[1]) <a name="line.205"></a>
<FONT color="green">206</FONT>                        &amp;&amp; (xcycleBound &lt;= x[0]))) {<a name="line.206"></a>
<FONT color="green">207</FONT>                    double[] nx = new double[3];<a name="line.207"></a>
<FONT color="green">208</FONT>                    double[] ny = new double[3];<a name="line.208"></a>
<FONT color="green">209</FONT>                    nx[0] = x[0]; nx[2] = x[1]; ny[0] = y[0]; ny[2] = y[1];<a name="line.209"></a>
<FONT color="green">210</FONT>                    nx[1] = xcycleBound;<a name="line.210"></a>
<FONT color="green">211</FONT>                    ny[1] = (y[1] - y[0]) * (xcycleBound - x[0]) <a name="line.211"></a>
<FONT color="green">212</FONT>                            / (x[1] - x[0]) + y[0];<a name="line.212"></a>
<FONT color="green">213</FONT>                    x = nx; y = ny;<a name="line.213"></a>
<FONT color="green">214</FONT>                }<a name="line.214"></a>
<FONT color="green">215</FONT>            }<a name="line.215"></a>
<FONT color="green">216</FONT>    <a name="line.216"></a>
<FONT color="green">217</FONT>            if (rangeAxis instanceof CyclicNumberAxis) {<a name="line.217"></a>
<FONT color="green">218</FONT>                cnay = (CyclicNumberAxis) rangeAxis;<a name="line.218"></a>
<FONT color="green">219</FONT>                ycycleBound = cnay.getCycleBound();<a name="line.219"></a>
<FONT color="green">220</FONT>                yBoundMapping = cnay.isBoundMappedToLastCycle();<a name="line.220"></a>
<FONT color="green">221</FONT>                // The split may occur in either x splitted segments, if any, but <a name="line.221"></a>
<FONT color="green">222</FONT>                // not in both<a name="line.222"></a>
<FONT color="green">223</FONT>                if ((y[0] != y[1]) &amp;&amp; ((ycycleBound &gt;= y[0]) <a name="line.223"></a>
<FONT color="green">224</FONT>                        &amp;&amp; (ycycleBound &lt;= y[1]) <a name="line.224"></a>
<FONT color="green">225</FONT>                        || (ycycleBound &gt;= y[1]) &amp;&amp; (ycycleBound &lt;= y[0]))) {<a name="line.225"></a>
<FONT color="green">226</FONT>                    double[] nx = new double[x.length + 1];<a name="line.226"></a>
<FONT color="green">227</FONT>                    double[] ny = new double[y.length + 1];<a name="line.227"></a>
<FONT color="green">228</FONT>                    nx[0] = x[0]; nx[2] = x[1]; ny[0] = y[0]; ny[2] = y[1];<a name="line.228"></a>
<FONT color="green">229</FONT>                    ny[1] = ycycleBound;<a name="line.229"></a>
<FONT color="green">230</FONT>                    nx[1] = (x[1] - x[0]) * (ycycleBound - y[0]) <a name="line.230"></a>
<FONT color="green">231</FONT>                            / (y[1] - y[0]) + x[0];<a name="line.231"></a>
<FONT color="green">232</FONT>                    if (x.length == 3) { <a name="line.232"></a>
<FONT color="green">233</FONT>                        nx[3] = x[2]; ny[3] = y[2]; <a name="line.233"></a>
<FONT color="green">234</FONT>                    }<a name="line.234"></a>
<FONT color="green">235</FONT>                    x = nx; y = ny;<a name="line.235"></a>
<FONT color="green">236</FONT>                }<a name="line.236"></a>
<FONT color="green">237</FONT>                else if ((x.length == 3) &amp;&amp; (y[1] != y[2]) &amp;&amp; ((ycycleBound &gt;= y[1])<a name="line.237"></a>
<FONT color="green">238</FONT>                        &amp;&amp; (ycycleBound &lt;= y[2]) <a name="line.238"></a>
<FONT color="green">239</FONT>                        || (ycycleBound &gt;= y[2]) &amp;&amp; (ycycleBound &lt;= y[1]))) {<a name="line.239"></a>
<FONT color="green">240</FONT>                    double[] nx = new double[4];<a name="line.240"></a>
<FONT color="green">241</FONT>                    double[] ny = new double[4];<a name="line.241"></a>
<FONT color="green">242</FONT>                    nx[0] = x[0]; nx[1] = x[1]; nx[3] = x[2]; <a name="line.242"></a>
<FONT color="green">243</FONT>                    ny[0] = y[0]; ny[1] = y[1]; ny[3] = y[2];<a name="line.243"></a>
<FONT color="green">244</FONT>                    ny[2] = ycycleBound;<a name="line.244"></a>
<FONT color="green">245</FONT>                    nx[2] = (x[2] - x[1]) * (ycycleBound - y[1]) <a name="line.245"></a>
<FONT color="green">246</FONT>                            / (y[2] - y[1]) + x[1];<a name="line.246"></a>
<FONT color="green">247</FONT>                    x = nx; y = ny;<a name="line.247"></a>
<FONT color="green">248</FONT>                }<a name="line.248"></a>
<FONT color="green">249</FONT>            }<a name="line.249"></a>
<FONT color="green">250</FONT>            <a name="line.250"></a>
<FONT color="green">251</FONT>            // If the line is not wrapping, then parent is OK<a name="line.251"></a>
<FONT color="green">252</FONT>            if (x.length == 2) {<a name="line.252"></a>
<FONT color="green">253</FONT>                super.drawItem(g2, state, dataArea, info, plot, domainAxis, <a name="line.253"></a>
<FONT color="green">254</FONT>                        rangeAxis, dataset, series, item, crosshairState, pass);<a name="line.254"></a>
<FONT color="green">255</FONT>                return;<a name="line.255"></a>
<FONT color="green">256</FONT>            }<a name="line.256"></a>
<FONT color="green">257</FONT>    <a name="line.257"></a>
<FONT color="green">258</FONT>            OverwriteDataSet newset = new OverwriteDataSet(x, y, dataset);<a name="line.258"></a>
<FONT color="green">259</FONT>    <a name="line.259"></a>
<FONT color="green">260</FONT>            if (cnax != null) {<a name="line.260"></a>
<FONT color="green">261</FONT>                if (xcycleBound == x[0]) {<a name="line.261"></a>
<FONT color="green">262</FONT>                    cnax.setBoundMappedToLastCycle(x[1] &lt;= xcycleBound);<a name="line.262"></a>
<FONT color="green">263</FONT>                }<a name="line.263"></a>
<FONT color="green">264</FONT>                if (xcycleBound == x[1]) {<a name="line.264"></a>
<FONT color="green">265</FONT>                    cnax.setBoundMappedToLastCycle(x[0] &lt;= xcycleBound);<a name="line.265"></a>
<FONT color="green">266</FONT>                }<a name="line.266"></a>
<FONT color="green">267</FONT>            }<a name="line.267"></a>
<FONT color="green">268</FONT>            if (cnay != null) {<a name="line.268"></a>
<FONT color="green">269</FONT>                if (ycycleBound == y[0]) {<a name="line.269"></a>
<FONT color="green">270</FONT>                    cnay.setBoundMappedToLastCycle(y[1] &lt;= ycycleBound);<a name="line.270"></a>
<FONT color="green">271</FONT>                }<a name="line.271"></a>
<FONT color="green">272</FONT>                if (ycycleBound == y[1]) {<a name="line.272"></a>
<FONT color="green">273</FONT>                    cnay.setBoundMappedToLastCycle(y[0] &lt;= ycycleBound);<a name="line.273"></a>
<FONT color="green">274</FONT>                }<a name="line.274"></a>
<FONT color="green">275</FONT>            }<a name="line.275"></a>
<FONT color="green">276</FONT>            super.drawItem(<a name="line.276"></a>
<FONT color="green">277</FONT>                g2, state, dataArea, info, plot, domainAxis, rangeAxis, <a name="line.277"></a>
<FONT color="green">278</FONT>                newset, series, 1, crosshairState, pass<a name="line.278"></a>
<FONT color="green">279</FONT>            );<a name="line.279"></a>
<FONT color="green">280</FONT>    <a name="line.280"></a>
<FONT color="green">281</FONT>            if (cnax != null) {<a name="line.281"></a>
<FONT color="green">282</FONT>                if (xcycleBound == x[1]) {<a name="line.282"></a>
<FONT color="green">283</FONT>                    cnax.setBoundMappedToLastCycle(x[2] &lt;= xcycleBound);<a name="line.283"></a>
<FONT color="green">284</FONT>                }<a name="line.284"></a>
<FONT color="green">285</FONT>                if (xcycleBound == x[2]) {<a name="line.285"></a>