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| <pre><span class="sourceLineNo">001</span>/*-<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Copyright (c) 2014, 2016 Diamond Light Source Ltd.<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> *<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * All rights reserved. This program and the accompanying materials<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * are made available under the terms of the Eclipse Public License v1.0<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * which accompanies this distribution, and is available at<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * http://www.eclipse.org/legal/epl-v10.html<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> */<a name="line.8"></a> |
| <span class="sourceLineNo">009</span><a name="line.9"></a> |
| <span class="sourceLineNo">010</span>package org.eclipse.january.dataset;<a name="line.10"></a> |
| <span class="sourceLineNo">011</span><a name="line.11"></a> |
| <span class="sourceLineNo">012</span>import java.util.Arrays;<a name="line.12"></a> |
| <span class="sourceLineNo">013</span><a name="line.13"></a> |
| <span class="sourceLineNo">014</span>/**<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * Class to represent a slice through all dimensions of a multi-dimensional dataset. A slice<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * comprises a starting position array, a stopping position array (not included) and a stepping size array.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * If a maximum shape is specified, slicing past the original shape is supported for positive<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> * steps otherwise it is ignored. With unlimited dimensions, extending past the original shape is only<a name="line.18"></a> |
| <span class="sourceLineNo">019</span> * allowed if the stopping value is given.<a name="line.19"></a> |
| <span class="sourceLineNo">020</span> */<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>public class SliceND {<a name="line.21"></a> |
| <span class="sourceLineNo">022</span> private int[] lstart;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span> private int[] lstop;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span> private int[] lstep;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span> private transient int[] lshape; // latest shape<a name="line.25"></a> |
| <span class="sourceLineNo">026</span> private int[] oshape; // source or original shape<a name="line.26"></a> |
| <span class="sourceLineNo">027</span> private int[] mshape; // max shape<a name="line.27"></a> |
| <span class="sourceLineNo">028</span><a name="line.28"></a> |
| <span class="sourceLineNo">029</span> private boolean expanded;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span><a name="line.30"></a> |
| <span class="sourceLineNo">031</span> /**<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> * Construct ND slice for whole of shape<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> * @param shape<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> */<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> public SliceND(final int[] shape) {<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> final int rank = shape.length;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> lstart = new int[rank];<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> lstop = shape.clone();<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> lstep = new int[rank];<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> Arrays.fill(lstep, 1);<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> lshape = shape.clone();<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> oshape = shape.clone();<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> mshape = oshape;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> expanded = false;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> }<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> /**<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * Construct ND slice from an array of 1D slices<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * @param shape<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * @param slice<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> */<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> public SliceND(final int[] shape, Slice... slice) {<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> this(shape, null, slice);<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> }<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> /**<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * Construct ND slice from an array of 1D slices<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * @param shape<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * @param maxShape can be null<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * @param slice<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> */<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> public SliceND(final int[] shape, final int[] maxShape, Slice... slice) {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> this(shape);<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> if (maxShape != null) {<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> initMaxShape(maxShape);<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> }<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> if (slice != null) {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> final int length = slice.length;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> final int rank = shape.length;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> if (length > rank) {<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> throw new IllegalArgumentException("More slices have been specified than rank of shape");<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> }<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> for (int i = 0; i < length; i++) {<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> Slice s = slice[i];<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> if (s != null) {<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> setSlice(i, s);<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> }<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> }<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> }<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> }<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> private void initMaxShape(int[] maxShape) {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> final int rank = oshape.length;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> if (maxShape.length != rank) {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> throw new IllegalArgumentException("Maximum shape must have same rank as shape");<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> mshape = maxShape.clone();<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> for (int i = 0; i < rank; i++) {<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> int m = mshape[i];<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> if (m != ILazyWriteableDataset.UNLIMITED && m < oshape[i]) {<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> throw new IllegalArgumentException("Maximum shape must be greater than or equal to shape");<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> }<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> }<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> }<a name="line.96"></a> |
| <span class="sourceLineNo">097</span><a name="line.97"></a> |
| <span class="sourceLineNo">098</span> /**<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> * Construct ND slice parameters<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> * <a name="line.100"></a> |
| <span class="sourceLineNo">101</span> * @param shape<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> * @param start<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> * can be null<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> * @param stop<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> * can be null<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> * @param step<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> * can be null<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> */<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> public SliceND(final int[] shape, final int[] start, final int[] stop, final int[] step) {<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> this(shape, null, start, stop, step);<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> /**<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> * Construct ND slice parameters<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * <a name="line.115"></a> |
| <span class="sourceLineNo">116</span> * @param shape<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> * @param maxShape can be null<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> * @param start<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> * can be null<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> * @param stop<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> * can be null<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> * @param step<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> * can be null<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> */<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> public SliceND(final int[] shape, final int[] maxShape, final int[] start, final int[] stop, final int[] step) {<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> // number of steps, or new shape, taken in each dimension is<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> // shape = (stop - start + step - 1) / step if step > 0<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> // (stop - start + step + 1) / step if step < 0<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> //<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> // thus the final index in each dimension is<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> // start + (shape-1)*step<a name="line.131"></a> |
| <span class="sourceLineNo">132</span><a name="line.132"></a> |
| <span class="sourceLineNo">133</span> int rank = shape.length;<a name="line.133"></a> |
| <span class="sourceLineNo">134</span><a name="line.134"></a> |
| <span class="sourceLineNo">135</span> if (start == null) {<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> lstart = new int[rank];<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> } else {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> lstart = start.clone();<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> }<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> if (stop == null) {<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> lstop = new int[rank];<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> } else {<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> lstop = stop.clone();<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> }<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> if (step == null) {<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> lstep = new int[rank];<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> Arrays.fill(lstep, 1);<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> } else {<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> lstep = step.clone();<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> }<a name="line.150"></a> |
| <span class="sourceLineNo">151</span><a name="line.151"></a> |
| <span class="sourceLineNo">152</span> if (lstart.length != rank || lstop.length != rank || lstep.length != rank) {<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> throw new IllegalArgumentException("No of indexes does not match data dimensions: you passed it start="<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> + lstart.length + ", stop=" + lstop.length + ", step=" + lstep.length + ", and it needs " + rank);<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> }<a name="line.155"></a> |
| <span class="sourceLineNo">156</span><a name="line.156"></a> |
| <span class="sourceLineNo">157</span> lshape = new int[rank];<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> oshape = shape.clone();<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> if (maxShape == null) {<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> mshape = oshape;<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> } else {<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> initMaxShape(maxShape);<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> }<a name="line.163"></a> |
| <span class="sourceLineNo">164</span><a name="line.164"></a> |
| <span class="sourceLineNo">165</span> for (int i = 0; i < rank; i++) {<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> internalSetSlice(i, start == null ? null : lstart[i], stop == null ? null : lstop[i], lstep[i]);<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> }<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> }<a name="line.168"></a> |
| <span class="sourceLineNo">169</span><a name="line.169"></a> |
| <span class="sourceLineNo">170</span> /**<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> * Set slice for given dimension<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> * @param i dimension<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> * @param start can be null to imply start of dimension<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> * @param stop can be null to imply end of dimension<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> * @param step<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> */<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> public void setSlice(int i, Integer start, Integer stop, int step) {<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> internalSetSlice(i, start, stop, step);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> }<a name="line.179"></a> |
| <span class="sourceLineNo">180</span><a name="line.180"></a> |
| <span class="sourceLineNo">181</span> /**<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> * Set slice for given dimension<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> * @param i dimension<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> * @param start<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> * @param stop<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> * @param step<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> */<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> public void setSlice(int i, int start, int stop, int step) {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> internalSetSlice(i, start, stop, step);<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<a name="line.190"></a> |
| <span class="sourceLineNo">191</span><a name="line.191"></a> |
| <span class="sourceLineNo">192</span> /**<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> * Set slice for given dimension<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> * @param i dimension<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> * @param slice<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> * @since 2.0<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> */<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> public void setSlice(int i, Slice slice) {<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> internalSetSlice(i, slice.getStart(), slice.getStop(), slice.getStep());<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> }<a name="line.200"></a> |
| <span class="sourceLineNo">201</span><a name="line.201"></a> |
| <span class="sourceLineNo">202</span> /**<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> * Set slice for given dimension<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> * @param i dimension<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> * @param start<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> * @param stop<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> * @param step<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> */<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> private void internalSetSlice(int i, Integer start, Integer stop, int step) {<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> if (step == 0) {<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> throw new IllegalArgumentException("Step size must not be zero");<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> }<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> final int s = oshape[i];<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> final int m = mshape[i];<a name="line.214"></a> |
| <span class="sourceLineNo">215</span><a name="line.215"></a> |
| <span class="sourceLineNo">216</span> if (start == null) {<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> start = step > 0 ? 0 : s - 1;<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> } else if (start < 0) {<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> start += s;<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> }<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> if (step > 0) {<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> if (start < 0) {<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> start = 0;<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> } else if (start > s) {<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> if (m == s) {<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> start = s;<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> } else if (m != ILazyWriteableDataset.UNLIMITED && start > m) {<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> start = m;<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> }<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> }<a name="line.230"></a> |
| <span class="sourceLineNo">231</span><a name="line.231"></a> |
| <span class="sourceLineNo">232</span> if (stop == null) {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> if (start >= s && m == ILazyWriteableDataset.UNLIMITED) {<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> throw new IllegalArgumentException("To extend past current dimension in unlimited case, a stop value must be specified");<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> }<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> stop = s;<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> } else if (stop < 0) {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> stop += s;<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> }<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> if (stop < 0) {<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> stop = 0;<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> } else if (stop > s) {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> if (m == s) {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> stop = s;<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> } else if (m != ILazyWriteableDataset.UNLIMITED && stop > m) {<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> stop = m;<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span><a name="line.249"></a> |
| <span class="sourceLineNo">250</span> if (start >= stop) {<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> if (start < s || m == s) {<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> lstop[i] = start;<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> } else { // override end<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> stop = start + step;<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> if (m != ILazyWriteableDataset.UNLIMITED && stop > m) {<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> stop = m;<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> }<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> lstop[i] = stop;<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> }<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> } else {<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> lstop[i] = stop;<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> }<a name="line.262"></a> |
| <span class="sourceLineNo">263</span><a name="line.263"></a> |
| <span class="sourceLineNo">264</span> if (lstop[i] > s) {<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> oshape[i] = lstop[i];<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> expanded = true;<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> }<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> } else {<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> if (start < 0) {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> start = -1;<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> } else if (start >= s) {<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> start = s - 1;<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> }<a name="line.273"></a> |
| <span class="sourceLineNo">274</span><a name="line.274"></a> |
| <span class="sourceLineNo">275</span> if (stop == null) {<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> stop = -1;<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> } else if (stop < 0) {<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> stop += s;<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> }<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> if (stop < -1) {<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> stop = -1;<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> } else if (stop >= s) {<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> stop = s - 1;<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> }<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> if (stop >= start) {<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> lstop[i] = start;<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> } else {<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> lstop[i] = stop;<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> }<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> }<a name="line.290"></a> |
| <span class="sourceLineNo">291</span><a name="line.291"></a> |
| <span class="sourceLineNo">292</span> stop = lstop[i];<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> if (start == stop) {<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> lshape[i] = 0;<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> } else if (step > 0) {<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> lshape[i] = Math.max(0, (stop - start - 1) / step + 1);<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> } else {<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> lshape[i] = Math.max(0, (stop - start + 1) / step + 1);<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> }<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> lstart[i] = start;<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> lstep[i] = step;<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> }<a name="line.302"></a> |
| <span class="sourceLineNo">303</span><a name="line.303"></a> |
| <span class="sourceLineNo">304</span> /**<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> * @return shape of source dataset (this can change for dynamic datasets)<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> */<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> public int[] getSourceShape() {<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> return oshape;<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> }<a name="line.309"></a> |
| <span class="sourceLineNo">310</span><a name="line.310"></a> |
| <span class="sourceLineNo">311</span> /**<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> * @return maximum shape<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> */<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> public int[] getMaxShape() {<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> return mshape;<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> }<a name="line.316"></a> |
| <span class="sourceLineNo">317</span><a name="line.317"></a> |
| <span class="sourceLineNo">318</span> /**<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> * @return true if slice makes shape larger<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> */<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> public boolean isExpanded() {<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> return expanded;<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> }<a name="line.323"></a> |
| <span class="sourceLineNo">324</span><a name="line.324"></a> |
| <span class="sourceLineNo">325</span> /**<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> * @return resulting shape (this can change if the start, stop, step arrays are changed)<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> */<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> public int[] getShape() {<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> return lshape;<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> }<a name="line.330"></a> |
| <span class="sourceLineNo">331</span><a name="line.331"></a> |
| <span class="sourceLineNo">332</span> /**<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> * @return start values<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> */<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> public int[] getStart() {<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> return lstart;<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> }<a name="line.337"></a> |
| <span class="sourceLineNo">338</span><a name="line.338"></a> |
| <span class="sourceLineNo">339</span> /**<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> * Note stop values are clamped to -1 for <b>negative</b> steps<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> * @return stop values<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> */<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> public int[] getStop() {<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> return lstop;<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> }<a name="line.345"></a> |
| <span class="sourceLineNo">346</span><a name="line.346"></a> |
| <span class="sourceLineNo">347</span> /**<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> * @return step values<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> */<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> public int[] getStep() {<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> return lstep;<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> }<a name="line.352"></a> |
| <span class="sourceLineNo">353</span><a name="line.353"></a> |
| <span class="sourceLineNo">354</span> /**<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> * @return true if all of original shape is covered by this slice with positive steps<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> */<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> public boolean isAll() {<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> if (expanded) {<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> return false;<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> }<a name="line.360"></a> |
| <span class="sourceLineNo">361</span><a name="line.361"></a> |
| <span class="sourceLineNo">362</span> boolean allData = Arrays.equals(oshape, getShape());<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> if (allData) {<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> for (int i = 0; i < lshape.length; i++) {<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> if (lstep[i] < 0) {<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> allData = false;<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> break;<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> }<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> }<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> }<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> return allData;<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> }<a name="line.372"></a> |
| <span class="sourceLineNo">373</span><a name="line.373"></a> |
| <span class="sourceLineNo">374</span> /**<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> * Flip slice direction in given dimension so slice begins at previous end point,<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> * steps in the opposite direction, and finishes at the previous start point <a name="line.376"></a> |
| <span class="sourceLineNo">377</span> * @param i dimension to flip<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> */<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> public SliceND flip(int i) {<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> if (i < 0 || i >= lshape.length) {<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> throw new IllegalArgumentException("Given dimension is less than zero or greater than last dimension");<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> }<a name="line.382"></a> |
| <span class="sourceLineNo">383</span><a name="line.383"></a> |
| <span class="sourceLineNo">384</span> int beg = lstart[i];<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> int end = lstop[i];<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> int step = lstep[i];<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> int del = lstep[i] > 0 ? 1 : -1;<a name="line.387"></a> |
| <span class="sourceLineNo">388</span><a name="line.388"></a> |
| <span class="sourceLineNo">389</span> int num = (end - beg - del) / step + 1; // number of steps<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> lstart[i] = beg + (num - 1) * step;<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> lstop[i] = Math.max(beg - step, -1);<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> lstep[i] = -step;<a name="line.392"></a> |
| <span class="sourceLineNo">393</span><a name="line.393"></a> |
| <span class="sourceLineNo">394</span> return this;<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> }<a name="line.395"></a> |
| <span class="sourceLineNo">396</span><a name="line.396"></a> |
| <span class="sourceLineNo">397</span> /**<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> * Flip slice direction in all dimensions so slice begins at previous end point,<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> * steps in the opposite direction, and finishes at the previous start point <a name="line.399"></a> |
| <span class="sourceLineNo">400</span> */<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> public SliceND flip() {<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> int orank = lshape.length;<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> for (int i = 0; i < orank; i++) {<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> flip(i);<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> }<a name="line.405"></a> |
| <span class="sourceLineNo">406</span><a name="line.406"></a> |
| <span class="sourceLineNo">407</span> return this;<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> }<a name="line.408"></a> |
| <span class="sourceLineNo">409</span><a name="line.409"></a> |
| <span class="sourceLineNo">410</span> /**<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> * Convert to a slice array<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> * @return a slice array<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> */<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> public Slice[] convertToSlice() {<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> int orank = lshape.length;<a name="line.415"></a> |
| <span class="sourceLineNo">416</span><a name="line.416"></a> |
| <span class="sourceLineNo">417</span> Slice[] slice = new Slice[orank];<a name="line.417"></a> |
| <span class="sourceLineNo">418</span><a name="line.418"></a> |
| <span class="sourceLineNo">419</span> for (int j = 0; j < orank; j++) {<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> slice[j] = new Slice(lstart[j], lstop[j], lstep[j]);<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> }<a name="line.421"></a> |
| <span class="sourceLineNo">422</span><a name="line.422"></a> |
| <span class="sourceLineNo">423</span> return slice;<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> }<a name="line.424"></a> |
| <span class="sourceLineNo">425</span><a name="line.425"></a> |
| <span class="sourceLineNo">426</span> @Override<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> public SliceND clone() {<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> SliceND c = new SliceND(oshape);<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> for (int i = 0; i < lshape.length; i++) {<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> c.lstart[i] = lstart[i];<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> c.lstop[i] = lstop[i];<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> c.lstep[i] = lstep[i];<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> c.lshape[i] = lshape[i];<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> }<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> c.expanded = expanded;<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> return c;<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> }<a name="line.437"></a> |
| <span class="sourceLineNo">438</span><a name="line.438"></a> |
| <span class="sourceLineNo">439</span> @Override<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> public String toString() {<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> final int rank = lshape.length;<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> if (rank == 0) {<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> return "";<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> }<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> StringBuilder s = new StringBuilder();<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> for (int i = 0; i < rank; i++) {<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> Slice.appendSliceToString(s, oshape[i], lstart[i], lstop[i], lstep[i]);<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> s.append(',');<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> }<a name="line.449"></a> |
| <span class="sourceLineNo">450</span><a name="line.450"></a> |
| <span class="sourceLineNo">451</span> return s.substring(0, s.length()-1);<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> }<a name="line.452"></a> |
| <span class="sourceLineNo">453</span><a name="line.453"></a> |
| <span class="sourceLineNo">454</span> /**<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> * Creating slice from dataset<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> * @param data<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> * @param start<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> * @param stop<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> * @return slice<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> */<a name="line.460"></a> |
| <span class="sourceLineNo">461</span> public static SliceND createSlice(ILazyDataset data, int[] start, int[] stop) {<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> return createSlice(data, start, stop, null);<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> }<a name="line.463"></a> |
| <span class="sourceLineNo">464</span><a name="line.464"></a> |
| <span class="sourceLineNo">465</span> /**<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> * Creating slice from dataset<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> * @param data<a name="line.467"></a> |
| <span class="sourceLineNo">468</span> * @param start<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> * @param stop<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> * @param step<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> * @return slice<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> */<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> public static SliceND createSlice(ILazyDataset data, int[] start, int[] stop, int[] step) {<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> if (data instanceof IDynamicDataset) {<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> return new SliceND(data.getShape(), ((IDynamicDataset) data).getMaxShape(), start, stop, step);<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> }<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> return new SliceND(data.getShape(), start, stop, step);<a name="line.477"></a> |
| <span class="sourceLineNo">478</span> }<a name="line.478"></a> |
| <span class="sourceLineNo">479</span>}<a name="line.479"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
