blind

commit ab3fc0fa703bc112938360c77200bd4ecb6bd503
parent 9e9a962e2f115d0df0599cb84bdbc5009ea7de12
Author: Mattias Andrée <maandree@kth.se>
Date:   Thu, 13 Jul 2017 04:50:57 +0200

Add blind-rectangle-tessellation, blind-triangle-tessellation, and blind-hexagon-tessellation

Signed-off-by: Mattias Andrée <maandree@kth.se>

Diffstat:
M
Makefile
 | 
3
+++
A
src/blind-hexagon-tessellation.c
 | 
108
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
src/blind-rectangle-tessellation.c
 | 
72
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
src/blind-triangle-tessellation.c
 | 
93
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

4 files changed, 276 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
@@ -36,6 +36,7 @@ BIN =\
 	blind-from-video\
 	blind-gauss-blur\
 	blind-get-colours\
+	blind-hexagon-tessellation\
 	blind-interleave\
 	blind-invert-luma\
 	blind-linear-gradient\
@@ -46,6 +47,7 @@ BIN =\
 	blind-premultiply\
 	blind-radial-gradient\
 	blind-read-head\
+	blind-rectangle-tessellation\
 	blind-repeat\
 	blind-repeat-tessellation\
 	blind-reverse\
@@ -76,6 +78,7 @@ BIN =\
 	blind-to-video\
 	blind-translate\
 	blind-transpose\
+	blind-triangle-tessellation\
 	blind-unpremultiply\
 	blind-vector-projection\
 	blind-write-head\
diff --git a/src/blind-hexagon-tessellation.c b/src/blind-hexagon-tessellation.c
@@ -0,0 +1,108 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+USAGE("[-F pixel-format] block-diameter")
+
+#define SET_XYZA(TYPE)\
+	(pixwidth *= sizeof(double),\
+	 colours = alloca(4 * pixwidth),\
+	 ((TYPE *)colours)[ 0] = (TYPE)(0.0000 * D65_XYZ_X),\
+	 ((TYPE *)colours)[ 1] = (TYPE)(0.0000),\
+	 ((TYPE *)colours)[ 2] = (TYPE)(0.0000 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[ 3] = (TYPE)1,\
+	 ((TYPE *)colours)[ 4] = (TYPE)(0.3333 * D65_XYZ_X),\
+	 ((TYPE *)colours)[ 5] = (TYPE)(0.3333),\
+	 ((TYPE *)colours)[ 6] = (TYPE)(0.3333 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[ 7] = (TYPE)1,\
+	 ((TYPE *)colours)[ 8] = (TYPE)(0.6667 * D65_XYZ_X),\
+	 ((TYPE *)colours)[ 9] = (TYPE)(0.6667),\
+	 ((TYPE *)colours)[10] = (TYPE)(0.6667 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[11] = (TYPE)1,\
+	 ((TYPE *)colours)[12] = (TYPE)(1.0000 * D65_XYZ_X),\
+	 ((TYPE *)colours)[13] = (TYPE)(1.0000),\
+	 ((TYPE *)colours)[14] = (TYPE)(1.0000 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[15] = (TYPE)1)
+
+static struct stream stream = { .width = 0, .height = 0, .frames = 1 };
+
+int
+main(int argc, char *argv[])
+{
+	size_t diameter;
+	const char *pixfmt = "xyza";
+	size_t pixwidth = 4;
+	char *colours;
+	size_t x, y, y2;
+	int k;
+
+	ARGBEGIN {
+	case 'F':
+		pixfmt = UARGF();
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+	if (argc != 1)
+		usage();
+
+	diameter = etozu_arg("block-diameter", argv[0], 1, SIZE_MAX);
+
+	pixfmt = get_pixel_format(pixfmt, "xyza");
+	if (!strcmp(pixfmt, "xyza"))
+		SET_XYZA(double);
+	else if (!strcmp(pixfmt, "xyza f"))
+		SET_XYZA(float);
+	else
+		eprintf("pixel format %s is not supported, try xyza\n", pixfmt);
+
+	strcpy(stream.pixfmt, pixfmt);
+	stream.width  = (size_t)(diameter * sqrt(3.));
+	stream.height = diameter * 3 / 2;
+	fprint_stream_head(stdout, &stream);
+	efflush(stdout, "<stdout>");
+
+	for (y = 0; y < stream.height; y++) {
+		for (x = 0; x < stream.width; x++) {
+			if (y * 4 < diameter) {
+				switch (x * 4 / stream.width) {
+				case 0:
+					k = 2 * (4 * x * diameter < stream.width * diameter - 4 * y * stream.width);
+					break;
+				case 1:
+					k = 3 * (4 * x * diameter - stream.width * diameter > 4 * y * stream.width);
+					break;
+				case 2:
+					k = 1 + 2 * (3 * diameter * stream.width - 4 * x * diameter > 4 * y * stream.width);
+					break;
+				default:
+					k = 1 + (4 * x * diameter - 3 * stream.width * diameter > 4 * y * stream.width);
+					break;
+				}
+			} else if (y * 4 < diameter * 3) {
+				k = (x * 2 >= stream.width);
+			} else if (y < diameter) {
+				y2 = diameter - y;
+				switch (x * 4 / stream.width) {
+				case 0:
+					k = 2 * (4 * x * diameter < stream.width * diameter - 4 * y2 * stream.width);
+					break;
+				case 1:
+					k = 3 * (4 * x * diameter - stream.width * diameter > 4 * y2 * stream.width);
+					break;
+				case 2:
+					k = 1 + 2 * (3 * diameter * stream.width - 4 * x * diameter > 4 * y2 * stream.width);
+					break;
+				default:
+					k = 1 + (4 * x * diameter - 3 * stream.width * diameter > 4 * y2 * stream.width);
+					break;
+				}
+			} else {
+				k = (stream.width <= x * 4 && x * 4 < stream.width * 3) + 2;
+			}
+			ewriteall(STDOUT_FILENO, colours + k * pixwidth, pixwidth, "<stdout>");
+		}
+	}
+
+	return 0;
+}
diff --git a/src/blind-rectangle-tessellation.c b/src/blind-rectangle-tessellation.c
@@ -0,0 +1,72 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+USAGE("[-F pixel-format] block-width block-height")
+
+#define SET_XYZA(TYPE)\
+	(pixwidth *= sizeof(double),\
+	 colours = alloca(4 * pixwidth),\
+	 ((TYPE *)colours)[ 0] = (TYPE)(0.0000 * D65_XYZ_X),\
+	 ((TYPE *)colours)[ 1] = (TYPE)(0.0000),\
+	 ((TYPE *)colours)[ 2] = (TYPE)(0.0000 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[ 3] = (TYPE)1,\
+	 ((TYPE *)colours)[ 4] = (TYPE)(0.3333 * D65_XYZ_X),\
+	 ((TYPE *)colours)[ 5] = (TYPE)(0.3333),\
+	 ((TYPE *)colours)[ 6] = (TYPE)(0.3333 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[ 7] = (TYPE)1,\
+	 ((TYPE *)colours)[ 8] = (TYPE)(0.6667 * D65_XYZ_X),\
+	 ((TYPE *)colours)[ 9] = (TYPE)(0.6667),\
+	 ((TYPE *)colours)[10] = (TYPE)(0.6667 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[11] = (TYPE)1,\
+	 ((TYPE *)colours)[12] = (TYPE)(1.0000 * D65_XYZ_X),\
+	 ((TYPE *)colours)[13] = (TYPE)(1.0000),\
+	 ((TYPE *)colours)[14] = (TYPE)(1.0000 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[15] = (TYPE)1)
+
+static struct stream stream = { .width = 0, .height = 0, .frames = 1 };
+
+int
+main(int argc, char *argv[])
+{
+	size_t width, height;
+	const char *pixfmt = "xyza";
+	size_t pixwidth = 4;
+	char *colours;
+	size_t x1, y1, x2, y2;
+
+	ARGBEGIN {
+	case 'F':
+		pixfmt = UARGF();
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+	if (argc != 2)
+		usage();
+
+	width  = etozu_arg("block-width", argv[0], 1, SIZE_MAX);
+	height = etozu_arg("block-height", argv[1], 1, SIZE_MAX);
+
+	pixfmt = get_pixel_format(pixfmt, "xyza");
+	if (!strcmp(pixfmt, "xyza"))
+		SET_XYZA(double);
+	else if (!strcmp(pixfmt, "xyza f"))
+		SET_XYZA(float);
+	else
+		eprintf("pixel format %s is not supported, try xyza\n", pixfmt);
+
+	strcpy(stream.pixfmt, pixfmt);
+	stream.width  = 2 * width;
+	stream.height = 2 * height;
+	fprint_stream_head(stdout, &stream);
+	efflush(stdout, "<stdout>");
+
+	for (y1 = 0; y1 < 2; y1++)
+		for (y2 = 0; y2 < height; y2++)
+			for (x1 = 0; x1 < 2; x1++)
+				for (x2 = 0; x2 < width; x2++)
+					ewriteall(STDOUT_FILENO, colours + (y1 * 2 + x1) * pixwidth, pixwidth, "<stdout>");
+
+	return 0;
+}
diff --git a/src/blind-triangle-tessellation.c b/src/blind-triangle-tessellation.c
@@ -0,0 +1,93 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+USAGE("[-F pixel-format] block-width block-height")
+
+#define SET_XYZA(TYPE)\
+	(pixwidth *= sizeof(double),\
+	 colours = alloca(8 * pixwidth),\
+	 ((TYPE *)colours)[ 0] = (TYPE)0.412457445582367600,\
+	 ((TYPE *)colours)[ 1] = (TYPE)0.212673370378408280,\
+	 ((TYPE *)colours)[ 2] = (TYPE)0.019333942761673460,\
+	 ((TYPE *)colours)[ 3] = (TYPE)1,\
+	 ((TYPE *)colours)[ 4] = (TYPE)0.206228722791183800,\
+	 ((TYPE *)colours)[ 5] = (TYPE)0.106336685189204140,\
+	 ((TYPE *)colours)[ 6] = (TYPE)0.009666971380836730,\
+	 ((TYPE *)colours)[ 7] = (TYPE)1,\
+	 ((TYPE *)colours)[ 8] = (TYPE)0.770033310827883400,\
+	 ((TYPE *)colours)[ 9] = (TYPE)0.927825100869440000,\
+	 ((TYPE *)colours)[10] = (TYPE)0.138525897843512050,\
+	 ((TYPE *)colours)[11] = (TYPE)1,\
+	 ((TYPE *)colours)[12] = (TYPE)0.385016655413941700,\
+	 ((TYPE *)colours)[13] = (TYPE)0.463912550434720000,\
+	 ((TYPE *)colours)[14] = (TYPE)0.069262948921756020,\
+	 ((TYPE *)colours)[15] = (TYPE)1,\
+	 ((TYPE *)colours)[16] = (TYPE)0.357575865245515900,\
+	 ((TYPE *)colours)[17] = (TYPE)0.715151730491031800,\
+	 ((TYPE *)colours)[18] = (TYPE)0.119191955081838600,\
+	 ((TYPE *)colours)[19] = (TYPE)1,\
+	 ((TYPE *)colours)[20] = (TYPE)0.178787932622757940,\
+	 ((TYPE *)colours)[21] = (TYPE)0.357575865245515900,\
+	 ((TYPE *)colours)[22] = (TYPE)0.059595977540919300,\
+	 ((TYPE *)colours)[23] = (TYPE)1,\
+	 ((TYPE *)colours)[24] = (TYPE)(1.0 * D65_XYZ_X),\
+	 ((TYPE *)colours)[25] = (TYPE)(1.0),\
+	 ((TYPE *)colours)[26] = (TYPE)(1.0 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[27] = (TYPE)1,\
+	 ((TYPE *)colours)[28] = (TYPE)(0.5 * D65_XYZ_X),\
+	 ((TYPE *)colours)[29] = (TYPE)(0.5),\
+	 ((TYPE *)colours)[30] = (TYPE)(0.5 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[31] = (TYPE)1)
+
+static struct stream stream = { .width = 0, .height = 0, .frames = 1 };
+
+int
+main(int argc, char *argv[])
+{
+	size_t width, height;
+	const char *pixfmt = "xyza";
+	size_t pixwidth = 4;
+	char *colours;
+	size_t x1, y1, x2, y2, k;
+
+	ARGBEGIN {
+	case 'F':
+		pixfmt = UARGF();
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+	if (argc != 2)
+		usage();
+
+	width  = etozu_arg("block-width",  argv[0], 1, SIZE_MAX);
+	height = etozu_arg("block-height", argv[1], 1, SIZE_MAX);
+
+	pixfmt = get_pixel_format(pixfmt, "xyza");
+	if (!strcmp(pixfmt, "xyza"))
+		SET_XYZA(double);
+	else if (!strcmp(pixfmt, "xyza f"))
+		SET_XYZA(float);
+	else
+		eprintf("pixel format %s is not supported, try xyza\n", pixfmt);
+
+	strcpy(stream.pixfmt, pixfmt);
+	stream.width  = 2 * width;
+	stream.height = 2 * height;
+	fprint_stream_head(stdout, &stream);
+	efflush(stdout, "<stdout>");
+
+	for (y1 = 0; y1 < 2; y1++) {
+		for (y2 = 0; y2 < height; y2++) {
+			for (x1 = 0; x1 < 2; x1++) {
+				for (x2 = 0; x2 < width; x2++) {
+					k = y1 * 4 + x1 * 2 + (x2 * height > y2 * width);
+					ewriteall(STDOUT_FILENO, colours + k * pixwidth, pixwidth, "<stdout>");
+				}
+			}
+		}
+	}
+
+	return 0;
+}