/*-
 * #%L
 * Fluorescence lifetime analysis in SciJava Ops.
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package org.scijava.ops.flim;

import net.imglib2.img.array.ArrayImgs;
import net.imglib2.type.numeric.real.FloatType;
import org.junit.jupiter.api.BeforeAll;
import org.scijava.ops.api.OpEnvironment;

import java.util.Random;

/**
 * Common behavior across FLIM analysis tests
 *
 * @author Dasong Gao
 * @author Gabriel Selzer
 */
public abstract class AbstractFlimTest {

	static final FitResults rslt = new FitResults();

	static final long[] DIM = { 2, 3, 7 };
	static final float[] data = new float[(int) (DIM[0] * DIM[1] * DIM[2])];

	static final long SEED = 0x1226;

	static final Random rng = new Random(SEED);

	static final float TOLERANCE = 1e-5f;

	static final OpEnvironment ops = OpEnvironment.build();

	@BeforeAll
	public static void init() {
		// create a image of size DIM filled with random values
		rslt.paramMap = ArrayImgs.floats(DIM);
		rslt.ltAxis = 2;

		int i = 0;
		for (final FloatType pix : rslt.paramMap) {
			data[i] = rng.nextFloat();
			pix.set(data[i++]);
		}
	}

	/**
	 * Gets pixel i of plane p from an ram image of dimension
	 */
	static float getVal(int i, int p) {
		return data[(int) (i + DIM[0] * DIM[1] * p)];
	}

}
