From b66bbf3f7efcddbfc6a2cbad4ac5cad5ac615240 Mon Sep 17 00:00:00 2001
From: David Mayerich <mayerich@uh.edu>
Date: Mon, 27 Feb 2017 16:41:35 -0600
Subject: [PATCH] added some details to image_stack for Shihao - may not be used

---
 stim/grids/image_stack.h | 10 ++++++++++
 1 file changed, 10 insertions(+), 0 deletions(-)

diff --git a/stim/grids/image_stack.h b/stim/grids/image_stack.h
index d8b7a8a..e43d1c6 100644
--- a/stim/grids/image_stack.h
+++ b/stim/grids/image_stack.h
@@ -5,6 +5,7 @@
 #include <stim/parser/filename.h>
 #include <stim/grids/grid.h>
 #include <stim/image/image.h>
+#include <stim/math/vec3.h>
 
 namespace stim{
 
@@ -166,6 +167,15 @@ public:
 		return ptr[z * R[0] * R[1] * R[2] + y * R[0] * R[1] + x * R[0] + c];
 	}
 
+	/// Returns the world-space position at an index point (i, j, k)
+	vec3<F> p(size_t i, size_t j, size_t k){
+		vec3<F> result;
+		result[0] = (F)i * S[0];
+		result[1] = (F)j * S[1];
+		result[2] = (F)j * S[2];
+		return result;
+	}
+
 	void read(std::string file, unsigned int X, unsigned int Y, unsigned int Z, unsigned int C = 1, unsigned int header = 0){
 		read(file, stim::vec<unsigned long>(C, X, Y, Z), header);
 	}
--
libgit2 0.21.4