xypointerannotation.html

jfreechart1。0。2的api。

<FONT color="green">180</FONT>        public void setAngle(double angle) {<a name="line.180"></a>
<FONT color="green">181</FONT>            this.angle = angle;<a name="line.181"></a>
<FONT color="green">182</FONT>        }<a name="line.182"></a>
<FONT color="green">183</FONT>        <a name="line.183"></a>
<FONT color="green">184</FONT>        /**<a name="line.184"></a>
<FONT color="green">185</FONT>         * Returns the tip radius.<a name="line.185"></a>
<FONT color="green">186</FONT>         * <a name="line.186"></a>
<FONT color="green">187</FONT>         * @return The tip radius (in Java2D units).<a name="line.187"></a>
<FONT color="green">188</FONT>         */<a name="line.188"></a>
<FONT color="green">189</FONT>        public double getTipRadius() {<a name="line.189"></a>
<FONT color="green">190</FONT>            return this.tipRadius;<a name="line.190"></a>
<FONT color="green">191</FONT>        }<a name="line.191"></a>
<FONT color="green">192</FONT>        <a name="line.192"></a>
<FONT color="green">193</FONT>        /**<a name="line.193"></a>
<FONT color="green">194</FONT>         * Sets the tip radius.<a name="line.194"></a>
<FONT color="green">195</FONT>         * <a name="line.195"></a>
<FONT color="green">196</FONT>         * @param radius  the radius (in Java2D units).<a name="line.196"></a>
<FONT color="green">197</FONT>         */<a name="line.197"></a>
<FONT color="green">198</FONT>        public void setTipRadius(double radius) {<a name="line.198"></a>
<FONT color="green">199</FONT>            this.tipRadius = radius;<a name="line.199"></a>
<FONT color="green">200</FONT>        }<a name="line.200"></a>
<FONT color="green">201</FONT>        <a name="line.201"></a>
<FONT color="green">202</FONT>        /**<a name="line.202"></a>
<FONT color="green">203</FONT>         * Sets the base radius.<a name="line.203"></a>
<FONT color="green">204</FONT>         * <a name="line.204"></a>
<FONT color="green">205</FONT>         * @return The base radius (in Java2D units).<a name="line.205"></a>
<FONT color="green">206</FONT>         */<a name="line.206"></a>
<FONT color="green">207</FONT>        public double getBaseRadius() {<a name="line.207"></a>
<FONT color="green">208</FONT>            return this.baseRadius;<a name="line.208"></a>
<FONT color="green">209</FONT>        }<a name="line.209"></a>
<FONT color="green">210</FONT>        <a name="line.210"></a>
<FONT color="green">211</FONT>        /**<a name="line.211"></a>
<FONT color="green">212</FONT>         * Sets the base radius.<a name="line.212"></a>
<FONT color="green">213</FONT>         * <a name="line.213"></a>
<FONT color="green">214</FONT>         * @param radius  the radius (in Java2D units).<a name="line.214"></a>
<FONT color="green">215</FONT>         */<a name="line.215"></a>
<FONT color="green">216</FONT>        public void setBaseRadius(double radius) {<a name="line.216"></a>
<FONT color="green">217</FONT>            this.baseRadius = radius;<a name="line.217"></a>
<FONT color="green">218</FONT>        }<a name="line.218"></a>
<FONT color="green">219</FONT>    <a name="line.219"></a>
<FONT color="green">220</FONT>        /**<a name="line.220"></a>
<FONT color="green">221</FONT>         * Sets the label offset.<a name="line.221"></a>
<FONT color="green">222</FONT>         * <a name="line.222"></a>
<FONT color="green">223</FONT>         * @return The label offset (in Java2D units).<a name="line.223"></a>
<FONT color="green">224</FONT>         */<a name="line.224"></a>
<FONT color="green">225</FONT>        public double getLabelOffset() {<a name="line.225"></a>
<FONT color="green">226</FONT>            return this.labelOffset;<a name="line.226"></a>
<FONT color="green">227</FONT>        }<a name="line.227"></a>
<FONT color="green">228</FONT>        <a name="line.228"></a>
<FONT color="green">229</FONT>        /**<a name="line.229"></a>
<FONT color="green">230</FONT>         * Sets the label offset (from the arrow base, continuing in a straight <a name="line.230"></a>
<FONT color="green">231</FONT>         * line, in Java2D units).<a name="line.231"></a>
<FONT color="green">232</FONT>         * <a name="line.232"></a>
<FONT color="green">233</FONT>         * @param offset  the offset (in Java2D units).<a name="line.233"></a>
<FONT color="green">234</FONT>         */<a name="line.234"></a>
<FONT color="green">235</FONT>        public void setLabelOffset(double offset) {<a name="line.235"></a>
<FONT color="green">236</FONT>            this.labelOffset = offset;<a name="line.236"></a>
<FONT color="green">237</FONT>        }<a name="line.237"></a>
<FONT color="green">238</FONT>        <a name="line.238"></a>
<FONT color="green">239</FONT>        /**<a name="line.239"></a>
<FONT color="green">240</FONT>         * Returns the arrow length.<a name="line.240"></a>
<FONT color="green">241</FONT>         * <a name="line.241"></a>
<FONT color="green">242</FONT>         * @return The arrow length.<a name="line.242"></a>
<FONT color="green">243</FONT>         */<a name="line.243"></a>
<FONT color="green">244</FONT>        public double getArrowLength() {<a name="line.244"></a>
<FONT color="green">245</FONT>            return this.arrowLength;<a name="line.245"></a>
<FONT color="green">246</FONT>        }<a name="line.246"></a>
<FONT color="green">247</FONT>        <a name="line.247"></a>
<FONT color="green">248</FONT>        /**<a name="line.248"></a>
<FONT color="green">249</FONT>         * Sets the arrow length.<a name="line.249"></a>
<FONT color="green">250</FONT>         * <a name="line.250"></a>
<FONT color="green">251</FONT>         * @param length  the length.<a name="line.251"></a>
<FONT color="green">252</FONT>         */<a name="line.252"></a>
<FONT color="green">253</FONT>        public void setArrowLength(double length) {<a name="line.253"></a>
<FONT color="green">254</FONT>            this.arrowLength = length;<a name="line.254"></a>
<FONT color="green">255</FONT>        }<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>         * Returns the arrow width.<a name="line.258"></a>
<FONT color="green">259</FONT>         * <a name="line.259"></a>
<FONT color="green">260</FONT>         * @return The arrow width (in Java2D units).<a name="line.260"></a>
<FONT color="green">261</FONT>         */<a name="line.261"></a>
<FONT color="green">262</FONT>        public double getArrowWidth() {<a name="line.262"></a>
<FONT color="green">263</FONT>            return this.arrowWidth;<a name="line.263"></a>
<FONT color="green">264</FONT>        }<a name="line.264"></a>
<FONT color="green">265</FONT>        <a name="line.265"></a>
<FONT color="green">266</FONT>        /**<a name="line.266"></a>
<FONT color="green">267</FONT>         * Sets the arrow width.<a name="line.267"></a>
<FONT color="green">268</FONT>         * <a name="line.268"></a>
<FONT color="green">269</FONT>         * @param width  the width (in Java2D units).<a name="line.269"></a>
<FONT color="green">270</FONT>         */<a name="line.270"></a>
<FONT color="green">271</FONT>        public void setArrowWidth(double width) {<a name="line.271"></a>
<FONT color="green">272</FONT>            this.arrowWidth = width;<a name="line.272"></a>
<FONT color="green">273</FONT>        }<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>         * Returns the stroke used to draw the arrow line.<a name="line.276"></a>
<FONT color="green">277</FONT>         * <a name="line.277"></a>
<FONT color="green">278</FONT>         * @return The arrow stroke (never &lt;code&gt;null&lt;/code&gt;).<a name="line.278"></a>
<FONT color="green">279</FONT>         */<a name="line.279"></a>
<FONT color="green">280</FONT>        public Stroke getArrowStroke() {<a name="line.280"></a>
<FONT color="green">281</FONT>            return this.arrowStroke;<a name="line.281"></a>
<FONT color="green">282</FONT>        }<a name="line.282"></a>
<FONT color="green">283</FONT>    <a name="line.283"></a>
<FONT color="green">284</FONT>        /** <a name="line.284"></a>
<FONT color="green">285</FONT>         * Sets the stroke used to draw the arrow line.<a name="line.285"></a>
<FONT color="green">286</FONT>         * <a name="line.286"></a>
<FONT color="green">287</FONT>         * @param stroke  the stroke (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.287"></a>
<FONT color="green">288</FONT>         */<a name="line.288"></a>
<FONT color="green">289</FONT>        public void setArrowStroke(Stroke stroke) {<a name="line.289"></a>
<FONT color="green">290</FONT>            if (stroke == null) {<a name="line.290"></a>
<FONT color="green">291</FONT>                throw new IllegalArgumentException("Null 'stroke' not permitted.");<a name="line.291"></a>
<FONT color="green">292</FONT>            }<a name="line.292"></a>
<FONT color="green">293</FONT>            this.arrowStroke = stroke;<a name="line.293"></a>
<FONT color="green">294</FONT>        }<a name="line.294"></a>
<FONT color="green">295</FONT>        <a name="line.295"></a>
<FONT color="green">296</FONT>        /**<a name="line.296"></a>
<FONT color="green">297</FONT>         * Sets the paint used for the arrow.<a name="line.297"></a>
<FONT color="green">298</FONT>         * <a name="line.298"></a>
<FONT color="green">299</FONT>         * @return The arrow paint (never &lt;code&gt;null&lt;/code&gt;).<a name="line.299"></a>
<FONT color="green">300</FONT>         */<a name="line.300"></a>
<FONT color="green">301</FONT>        public Paint getArrowPaint() {<a name="line.301"></a>
<FONT color="green">302</FONT>            return this.arrowPaint;<a name="line.302"></a>
<FONT color="green">303</FONT>        }<a name="line.303"></a>
<FONT color="green">304</FONT>        <a name="line.304"></a>
<FONT color="green">305</FONT>        /**<a name="line.305"></a>
<FONT color="green">306</FONT>         * Sets the paint used for the arrow.<a name="line.306"></a>
<FONT color="green">307</FONT>         * <a name="line.307"></a>
<FONT color="green">308</FONT>         * @param paint  the arrow paint (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.308"></a>
<FONT color="green">309</FONT>         */<a name="line.309"></a>
<FONT color="green">310</FONT>        public void setArrowPaint(Paint paint) {<a name="line.310"></a>
<FONT color="green">311</FONT>            this.arrowPaint = paint;<a name="line.311"></a>
<FONT color="green">312</FONT>        }<a name="line.312"></a>
<FONT color="green">313</FONT>        <a name="line.313"></a>
<FONT color="green">314</FONT>        /**<a name="line.314"></a>
<FONT color="green">315</FONT>         * Draws the annotation.<a name="line.315"></a>
<FONT color="green">316</FONT>         *<a name="line.316"></a>
<FONT color="green">317</FONT>         * @param g2  the graphics device.<a name="line.317"></a>
<FONT color="green">318</FONT>         * @param plot  the plot.<a name="line.318"></a>
<FONT color="green">319</FONT>         * @param dataArea  the data area.<a name="line.319"></a>
<FONT color="green">320</FONT>         * @param domainAxis  the domain axis.<a name="line.320"></a>
<FONT color="green">321</FONT>         * @param rangeAxis  the range axis.<a name="line.321"></a>
<FONT color="green">322</FONT>         * @param rendererIndex  the renderer index.<a name="line.322"></a>
<FONT color="green">323</FONT>         * @param info  the plot rendering info.<a name="line.323"></a>
<FONT color="green">324</FONT>         */<a name="line.324"></a>
<FONT color="green">325</FONT>        public void draw(Graphics2D g2, XYPlot plot, Rectangle2D dataArea,<a name="line.325"></a>
<FONT color="green">326</FONT>                         ValueAxis domainAxis, ValueAxis rangeAxis, <a name="line.326"></a>
<FONT color="green">327</FONT>                         int rendererIndex,<a name="line.327"></a>
<FONT color="green">328</FONT>                         PlotRenderingInfo info) {<a name="line.328"></a>
<FONT color="green">329</FONT>    <a name="line.329"></a>
<FONT color="green">330</FONT>            PlotOrientation orientation = plot.getOrientation();<a name="line.330"></a>
<FONT color="green">331</FONT>            RectangleEdge domainEdge = Plot.resolveDomainAxisLocation(<a name="line.331"></a>
<FONT color="green">332</FONT>                    plot.getDomainAxisLocation(), orientation);<a name="line.332"></a>
<FONT color="green">333</FONT>            RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation(<a name="line.333"></a>
<FONT color="green">334</FONT>                    plot.getRangeAxisLocation(), orientation);<a name="line.334"></a>
<FONT color="green">335</FONT>            double j2DX = domainAxis.valueToJava2D(getX(), dataArea, domainEdge);<a name="line.335"></a>
<FONT color="green">336</FONT>            double j2DY = rangeAxis.valueToJava2D(getY(), dataArea, rangeEdge);<a name="line.336"></a>
<FONT color="green">337</FONT>            if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.337"></a>
<FONT color="green">338</FONT>                double temp = j2DX;<a name="line.338"></a>
<FONT color="green">339</FONT>                j2DX = j2DY;<a name="line.339"></a>
<FONT color="green">340</FONT>                j2DY = temp;<a name="line.340"></a>
<FONT color="green">341</FONT>            }<a name="line.341"></a>
<FONT color="green">342</FONT>            double startX = j2DX + Math.cos(this.angle) * this.baseRadius;<a name="line.342"></a>
<FONT color="green">343</FONT>            double startY = j2DY + Math.sin(this.angle) * this.baseRadius;<a name="line.343"></a>
<FONT color="green">344</FONT>    <a name="line.344"></a>
<FONT color="green">345</FONT>            double endX = j2DX + Math.cos(this.angle) * this.tipRadius;<a name="line.345"></a>
<FONT color="green">346</FONT>            double endY = j2DY + Math.sin(this.angle) * this.tipRadius;<a name="line.346"></a>
<FONT color="green">347</FONT>    <a name="line.347"></a>
<FONT color="green">348</FONT>            double arrowBaseX = endX + Math.cos(this.angle) * this.arrowLength;<a name="line.348"></a>
<FONT color="green">349</FONT>            double arrowBaseY = endY + Math.sin(this.angle) * this.arrowLength;<a name="line.349"></a>
<FONT color="green">350</FONT>    <a name="line.350"></a>
<FONT color="green">351</FONT>            double arrowLeftX = arrowBaseX <a name="line.351"></a>
<FONT color="green">352</FONT>                + Math.cos(this.angle + Math.PI / 2.0) * this.arrowWidth;<a name="line.352"></a>
<FONT color="green">353</FONT>            double arrowLeftY = arrowBaseY <a name="line.353"></a>
<FONT color="green">354</FONT>                + Math.sin(this.angle + Math.PI / 2.0) * this.arrowWidth;<a name="line.354"></a>
<FONT color="green">355</FONT>    <a name="line.355"></a>
<FONT color="green">356</FONT>            double arrowRightX = arrowBaseX <a name="line.356"></a>
<FONT color="green">357</FONT>                - Math.cos(this.angle + Math.PI / 2.0) * this.arrowWidth;<a name="line.357"></a>
<FONT color="green">358</FONT>            double arrowRightY = arrowBaseY <a name="line.358"></a>
<FONT color="green">359</FONT>                - Math.sin(this.angle + Math.PI / 2.0) * this.arrowWidth;<a name="line.359"></a>
<FONT color="green">360</FONT>    <a name="line.360"></a>
<FONT color="green">361</FONT>            GeneralPath arrow = new GeneralPath();<a name="line.361"></a>