1 files changed, 0 insertions, 65 deletions
diff --git a/viewpoint.c b/viewpoint.c
deleted file mode 100644
index e8d2a1e..0000000
--- a/viewpoint.c
+++ /dev/null
@@ -1,65 +0,0 @@
-#include "viewpoint.h"
-
-#include <stdio.h>
-#include <math.h>
-#include <stdlib.h>
-
-static const vector_t up = {0, 0, 1};
-
-void viewpoint_init(viewpoint_t *view)
-{
-	// Vector from E to T
-	vector_t t;
-	vector_sub(&t, &view->target, &view->position);
-
-	// Calculate orthogonal vectors to E
-	vector_t b, v;
-	vector_cross(&b, (vector_t *)&up, &t);
-
-	// Convert to unit-vectors
-	vector_scale_inv(&t, &t, vector_len(&t));
-	vector_scale_inv(&b, &b, vector_len(&b));
-
-	vector_cross(&v, &t, &b);
-
-	// Calculate size of viewplane
-	COORD_T gx = tanf( FOV / 2 );
-	COORD_T gy = gx * ((COORD_T)view->height / view->width);
-
-	// Calculate viewplane vectors
-	vector_scale(&view->qx, &b, ( 2 * gx ) / (view->width - 1));
-	vector_scale(&view->qy, &v, ( 2 * gy ) / (view->height - 1));
-	
-	// Viewplane starting point
-	vector_copy(&view->blc, &t);
-	// This will thrash b and v
-	vector_sub(&view->blc, &view->blc, vector_scale(&b, &b, gx));
-	vector_sub(&view->blc, &view->blc, vector_scale(&v, &v, gy));
-
-	// Debug print
-	/*
-	printf("Calculated the following viewpoint stuff\n");
-	printf("qx"); vector_print(&view->qx);
-	printf("qy"); vector_print(&view->qy);
-	printf("blc"); vector_print(&view->blc);
-	*/
-}
-
-// Calculate ray for viewport w, h
-// https://en.wikipedia.org/wiki/Ray_tracing_(graphics)
-void viewpoint_ray(viewpoint_t *view, vector_t *r, COORD_T x, COORD_T y)
-{
-	// Calculate ray vector
-	vector_copy(r, &view->blc);
-
-	vector_t t;
-	vector_scale(&t, &view->qx, x);
-	vector_add(r, r, &t);
-
-	vector_scale(&t, &view->qy,	y);
-	vector_add(r, r, &t);
-
-	// Calculate unit vector
-	vector_scale_inv(r, r, vector_len(r));
-}
-