📄 cyclicxyitemrenderer.overwritedataset.html
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<FONT color="green">142</FONT> * (<code>null</code> 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> && (!(rangeAxis instanceof CyclicNumberAxis))) || (item <= 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 => 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> && ((xcycleBound >= x[0]) <a name="line.203"></a><FONT color="green">204</FONT> && (xcycleBound <= x[1]) <a name="line.204"></a><FONT color="green">205</FONT> || (xcycleBound >= x[1]) <a name="line.205"></a><FONT color="green">206</FONT> && (xcycleBound <= 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]) && ((ycycleBound >= y[0]) <a name="line.223"></a><FONT color="green">224</FONT> && (ycycleBound <= y[1]) <a name="line.224"></a><FONT color="green">225</FONT> || (ycycleBound >= y[1]) && (ycycleBound <= 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) && (y[1] != y[2]) && ((ycycleBound >= y[1])<a name="line.237"></a><FONT color="green">238</FONT> && (ycycleBound <= y[2]) <a name="line.238"></a><FONT color="green">239</FONT> || (ycycleBound >= y[2]) && (ycycleBound <= 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] <= 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] <= 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] <= 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] <= 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] <= 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>⌨️ 快捷键说明
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