WIP - add extractor, generate snippet_data

node_modules/sharp/vendor/include/vips/transform.h

@@ -0,0 +1,85 @@
+/* Affine transforms.
+ */
+
+/*
+
+    Copyright (C) 1991-2003 The National Gallery
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+    02110-1301  USA
+
+ */
+
+/*
+
+    These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
+
+ */
+
+#ifndef VIPS_TRANSFORM_H
+#define VIPS_TRANSFORM_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif /*__cplusplus*/
+
+/* Params for an affine transformation.
+ */
+typedef struct {
+	/* Area of input we can use. This can be smaller than the real input 
+	 * image: we expand the input to add extra pixels for interpolation. 
+	 */
+	VipsRect iarea;			
+
+	/* The area of the output we've been asked to generate. left/top can
+	 * be negative.
+	 */
+	VipsRect oarea;
+
+	/* The transform.
+	 */
+	double a, b, c, d;		
+	double idx, idy;
+	double odx, ody;
+
+	double ia, ib, ic, id;		/* Inverse of matrix abcd */
+} VipsTransformation;
+
+void vips__transform_init( VipsTransformation *trn );
+int vips__transform_calc_inverse( VipsTransformation *trn );
+int vips__transform_isidentity( const VipsTransformation *trn );
+int vips__transform_add( const VipsTransformation *in1, 
+	const VipsTransformation *in2, 
+	VipsTransformation *out );
+void vips__transform_print( const VipsTransformation *trn );
+
+void vips__transform_forward_point( const VipsTransformation *trn, 
+	const double x, const double y, double *ox, double *oy );
+void vips__transform_invert_point( const VipsTransformation *trn, 
+	const double x, const double y, double *ox, double *oy );
+void vips__transform_forward_rect( const VipsTransformation *trn,
+	const VipsRect *in, VipsRect *out );
+void vips__transform_invert_rect( const VipsTransformation *trn, 
+	const VipsRect *in, VipsRect *out );
+
+void vips__transform_set_area( VipsTransformation * );
+
+int vips__affine( VipsImage *in, VipsImage *out, VipsTransformation *trn );
+
+#ifdef __cplusplus
+}
+#endif /*__cplusplus*/
+
+#endif /*VIPS_TRANSFORM_H*/