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-rw-r--r--Makefile25
-rw-r--r--config.c1
-rw-r--r--config.h3
-rwxr-xr-xgen-pow-imagery253
-rwxr-xr-xgenerate-samples50
-rw-r--r--mbrot-gen.c39
-rw-r--r--raw-to-png.cpp111
7 files changed, 482 insertions, 0 deletions
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..6e18fac
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,25 @@
+all: config mbrot-gen raw-to-png raw-to-png-bw
+
+mbrot-gen:
+ - gcc -o mbrot-gen mbrot-gen.c ./config.so -lm -Wall
+
+raw-to-png:
+ - g++ -o raw-to-png raw-to-png.cpp -lm -lGL -lX11 -lpthread -Wall
+
+raw-to-png-bw:
+ - g++ -o raw-to-png-bw raw-to-png.cpp -DBW -lm -lGL -lX11 -lpthread -Wall
+
+
+clean: clean-config clean-exec
+clean-exec:
+ - rm mbrot-gen raw-to-png -f
+
+clean-config:
+ - rm config.so -f
+
+config:
+ - gcc -shared -o config.so config.c
+
+
+samples:
+ - ./generate-samples
diff --git a/config.c b/config.c
new file mode 100644
index 0000000..f2c8a32
--- /dev/null
+++ b/config.c
@@ -0,0 +1 @@
+unsigned int SIZE=1120;unsigned int ITERATIONS=50;float POWER=2.00;
diff --git a/config.h b/config.h
new file mode 100644
index 0000000..12b650d
--- /dev/null
+++ b/config.h
@@ -0,0 +1,3 @@
+unsigned int SIZE;
+unsigned int ITERATIONS;
+float POWER;
diff --git a/gen-pow-imagery b/gen-pow-imagery
new file mode 100755
index 0000000..1d785e3
--- /dev/null
+++ b/gen-pow-imagery
@@ -0,0 +1,253 @@
+#!/bin/sh
+
+OUT_DIR="pow_imagery"
+
+mkdir -p $OUT_DIR
+
+
+
+make_sample () {
+ N="$1-$2-$3pow"
+
+ if [ -e $OUT_DIR/$N.png ]; then
+ echo $OUT_DIR/$N : Already exists, skipping.
+ else
+ # Configure the generator
+ echo unsigned int SIZE=$1\;unsigned int ITERATIONS=$2\;float POWER=$3\; > config.c
+ make config
+
+ # Generate raw data
+ ./mbrot-gen > $OUT_DIR/$N.raw
+
+ # Make normal colour image
+ ./raw-to-png $OUT_DIR/$N.raw $1 $1
+ mv 0,0.png $OUT_DIR/$N.png
+
+ # Make (hypnotic) bw image to show boundaries clearly
+ ./raw-to-png-bw $OUT_DIR/$N.raw $1 $1
+ mv 0,0.png $OUT_DIR/$N-bw.png
+
+ rm $OUT_DIR/$N.raw
+ fi
+}
+
+make_sample 560 50 0.01
+make_sample 560 50 0.02
+make_sample 560 50 0.03
+make_sample 560 50 0.04
+make_sample 560 50 0.05
+make_sample 560 50 0.06
+make_sample 560 50 0.07
+make_sample 560 50 0.08
+make_sample 560 50 0.09
+make_sample 560 50 0.10
+
+make_sample 560 50 0.11
+make_sample 560 50 0.12
+make_sample 560 50 0.13
+make_sample 560 50 0.14
+make_sample 560 50 0.15
+make_sample 560 50 0.16
+make_sample 560 50 0.17
+make_sample 560 50 0.18
+make_sample 560 50 0.19
+
+make_sample 560 50 0.20
+make_sample 560 50 0.21
+make_sample 560 50 0.22
+make_sample 560 50 0.23
+make_sample 560 50 0.24
+make_sample 560 50 0.25
+make_sample 560 50 0.26
+make_sample 560 50 0.27
+make_sample 560 50 0.28
+make_sample 560 50 0.29
+
+make_sample 560 50 0.30
+make_sample 560 50 0.31
+make_sample 560 50 0.32
+make_sample 560 50 0.33
+make_sample 560 50 0.34
+make_sample 560 50 0.35
+make_sample 560 50 0.36
+make_sample 560 50 0.37
+make_sample 560 50 0.38
+make_sample 560 50 0.39
+
+make_sample 560 50 0.40
+make_sample 560 50 0.41
+make_sample 560 50 0.42
+make_sample 560 50 0.43
+make_sample 560 50 0.44
+make_sample 560 50 0.45
+make_sample 560 50 0.46
+make_sample 560 50 0.47
+make_sample 560 50 0.48
+make_sample 560 50 0.49
+
+make_sample 560 50 0.50
+make_sample 560 50 0.51
+make_sample 560 50 0.52
+make_sample 560 50 0.53
+make_sample 560 50 0.54
+make_sample 560 50 0.55
+make_sample 560 50 0.56
+make_sample 560 50 0.57
+make_sample 560 50 0.58
+make_sample 560 50 0.59
+
+make_sample 560 50 0.60
+make_sample 560 50 0.61
+make_sample 560 50 0.62
+make_sample 560 50 0.63
+make_sample 560 50 0.64
+make_sample 560 50 0.65
+make_sample 560 50 0.66
+make_sample 560 50 0.67
+make_sample 560 50 0.68
+make_sample 560 50 0.69
+
+make_sample 560 50 0.70
+make_sample 560 50 0.71
+make_sample 560 50 0.72
+make_sample 560 50 0.73
+make_sample 560 50 0.74
+make_sample 560 50 0.75
+make_sample 560 50 0.76
+make_sample 560 50 0.77
+make_sample 560 50 0.78
+make_sample 560 50 0.79
+
+make_sample 560 50 0.80
+make_sample 560 50 0.81
+make_sample 560 50 0.82
+make_sample 560 50 0.83
+make_sample 560 50 0.84
+make_sample 560 50 0.85
+make_sample 560 50 0.86
+make_sample 560 50 0.87
+make_sample 560 50 0.88
+make_sample 560 50 0.89
+
+make_sample 560 50 0.90
+make_sample 560 50 0.91
+make_sample 560 50 0.92
+make_sample 560 50 0.93
+make_sample 560 50 0.94
+make_sample 560 50 0.95
+make_sample 560 50 0.96
+make_sample 560 50 0.97
+make_sample 560 50 0.98
+make_sample 560 50 0.99
+
+make_sample 560 50 1.00
+make_sample 560 50 1.01
+make_sample 560 50 1.02
+make_sample 560 50 1.03
+make_sample 560 50 1.04
+make_sample 560 50 1.05
+make_sample 560 50 1.06
+make_sample 560 50 1.07
+make_sample 560 50 1.08
+make_sample 560 50 1.09
+
+make_sample 560 50 1.10
+make_sample 560 50 1.11
+make_sample 560 50 1.12
+make_sample 560 50 1.13
+make_sample 560 50 1.14
+make_sample 560 50 1.15
+make_sample 560 50 1.16
+make_sample 560 50 1.17
+make_sample 560 50 1.18
+make_sample 560 50 1.19
+
+make_sample 560 50 1.20
+make_sample 560 50 1.21
+make_sample 560 50 1.22
+make_sample 560 50 1.23
+make_sample 560 50 1.24
+make_sample 560 50 1.25
+make_sample 560 50 1.26
+make_sample 560 50 1.27
+make_sample 560 50 1.28
+make_sample 560 50 1.29
+
+make_sample 560 50 1.30
+make_sample 560 50 1.31
+make_sample 560 50 1.32
+make_sample 560 50 1.33
+make_sample 560 50 1.34
+make_sample 560 50 1.35
+make_sample 560 50 1.36
+make_sample 560 50 1.37
+make_sample 560 50 1.38
+make_sample 560 50 1.39
+
+make_sample 560 50 1.40
+make_sample 560 50 1.41
+make_sample 560 50 1.42
+make_sample 560 50 1.43
+make_sample 560 50 1.44
+make_sample 560 50 1.45
+make_sample 560 50 1.46
+make_sample 560 50 1.47
+make_sample 560 50 1.48
+make_sample 560 50 1.49
+
+make_sample 560 50 1.50
+make_sample 560 50 1.51
+make_sample 560 50 1.52
+make_sample 560 50 1.53
+make_sample 560 50 1.54
+make_sample 560 50 1.55
+make_sample 560 50 1.56
+make_sample 560 50 1.57
+make_sample 560 50 1.58
+make_sample 560 50 1.59
+
+make_sample 560 50 1.60
+make_sample 560 50 1.61
+make_sample 560 50 1.62
+make_sample 560 50 1.63
+make_sample 560 50 1.64
+make_sample 560 50 1.65
+make_sample 560 50 1.66
+make_sample 560 50 1.67
+make_sample 560 50 1.68
+make_sample 560 50 1.69
+
+make_sample 560 50 1.70
+make_sample 560 50 1.71
+make_sample 560 50 1.72
+make_sample 560 50 1.73
+make_sample 560 50 1.74
+make_sample 560 50 1.75
+make_sample 560 50 1.76
+make_sample 560 50 1.77
+make_sample 560 50 1.78
+make_sample 560 50 1.79
+
+make_sample 560 50 1.80
+make_sample 560 50 1.81
+make_sample 560 50 1.82
+make_sample 560 50 1.83
+make_sample 560 50 1.84
+make_sample 560 50 1.85
+make_sample 560 50 1.86
+make_sample 560 50 1.87
+make_sample 560 50 1.88
+make_sample 560 50 1.89
+
+make_sample 560 50 1.90
+make_sample 560 50 1.91
+make_sample 560 50 1.92
+make_sample 560 50 1.93
+make_sample 560 50 1.94
+make_sample 560 50 1.95
+make_sample 560 50 1.96
+make_sample 560 50 1.97
+make_sample 560 50 1.98
+make_sample 560 50 1.99
+
+make_sample 560 50 2.00
diff --git a/generate-samples b/generate-samples
new file mode 100755
index 0000000..54ccc71
--- /dev/null
+++ b/generate-samples
@@ -0,0 +1,50 @@
+#!/bin/sh
+
+OUT_DIR="samples"
+
+mkdir -p $OUT_DIR
+
+
+
+make_sample () {
+ # Configure the generator
+ echo unsigned int SIZE=$1\;unsigned int ITERATIONS=$2\;float POWER=$3\; > config.c
+ make config
+
+ # Generate raw data
+ ./mbrot-gen > $OUT_DIR/$1-$2-$3pow.raw
+
+ # Make normal colour image
+ ./raw-to-png $OUT_DIR/$1-$2-$3pow.raw $1 $1
+ mv 0,0.png $OUT_DIR/$1-$2.png
+
+ # Make (hypnotic) bw image to show boundaries clearly
+ ./raw-to-png-bw $OUT_DIR/$1-$2-$3pow.raw $1 $1
+ mv 0,0.png $OUT_DIR/$1-$2-$3-pow-bw.png
+
+ rm $OUT_DIR/$1-$2-$3pow.raw
+}
+
+make_sample 35 10 2
+make_sample 70 10 2
+make_sample 140 10 2
+make_sample 280 10 2
+make_sample 560 10 2
+make_sample 1120 10 2
+make_sample 2240 10 2
+
+make_sample 35 50 2
+make_sample 70 50 2
+make_sample 140 50 2
+make_sample 280 50 2
+make_sample 560 50 2
+make_sample 1120 50 2
+make_sample 2240 50 2
+
+make_sample 35 100 2
+make_sample 70 100 2
+make_sample 140 100 2
+make_sample 280 100 2
+make_sample 560 100 2
+make_sample 1120 100 2
+make_sample 2240 100 2
diff --git a/mbrot-gen.c b/mbrot-gen.c
new file mode 100644
index 0000000..cb79f54
--- /dev/null
+++ b/mbrot-gen.c
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <complex.h>
+#include <math.h>
+#include "config.h"
+
+int main(int argc, char **argv)
+{
+ unsigned int x, y, i;
+ float a,b;
+ float complex z,c;
+
+ fprintf(stderr, "Creating %dx%d image (raw format)\n",SIZE,SIZE);
+
+ y = 0;
+ for (b = -1.75f; y < SIZE; b+=(3.5f/SIZE))
+ {
+ x = 0;
+ for (a = -2.5f; x < SIZE; a+=(3.5f/SIZE))
+ {
+ z = 0;
+ c = a+I*b;
+ for (i = 0; i < ITERATIONS; i++)
+ {
+ if (cabsf(z) >= 2)
+ break;
+
+ z = cpow(z,POWER)+c;
+ }
+
+ printf("%c",( (255*i)/ITERATIONS ) );
+ x++;
+ }
+ y++;
+ if ( (y%10) == 0 )
+ fprintf(stderr,"\r%.3f%%",y/(float)SIZE*100);
+ }
+ fprintf(stderr,"\n");
+ return 0;
+}
diff --git a/raw-to-png.cpp b/raw-to-png.cpp
new file mode 100644
index 0000000..0a6746e
--- /dev/null
+++ b/raw-to-png.cpp
@@ -0,0 +1,111 @@
+#include <iostream>
+#include <stdio.h>
+#include <CImg.h>
+
+//#define TILE_WIDTH 200
+//#define TILE_HEIGHT 200
+
+//#define IMAGE_WIDTH 12200
+//#define IMAGE_HEIGHT 12200
+
+using namespace cimg_library;
+
+int main(int argc, char **argv)
+{
+ unsigned int TILE_SIZE, IMAGE_SIZE, x, y, tile_x, tile_y;
+ char out_name[] = "________.png";
+
+ if (argc != 4)
+ {
+ printf("%s in_file image_square tile_square\n",argv[0]);
+ return 1;
+ }
+
+ IMAGE_SIZE = atoi(argv[2]);
+ TILE_SIZE = atoi(argv[3]);
+
+
+ unsigned char *buf = (unsigned char*)malloc(TILE_SIZE);
+
+ FILE *fp = fopen(argv[1],"r");
+ if (!fp)
+ {
+ printf("ERROR: Cannot open file\n");
+ return 1;
+ }
+
+ CImg<unsigned char> buffer(TILE_SIZE, TILE_SIZE,1,3,1);
+ for (tile_y = 0; tile_y < IMAGE_SIZE/TILE_SIZE; tile_y++)
+ {
+ for (tile_x = 0; tile_x < IMAGE_SIZE/TILE_SIZE; tile_x++)
+ {
+ // Seek to data for start of this tile
+ #define DATA_Y (tile_y * (TILE_SIZE * TILE_SIZE) * (IMAGE_SIZE / TILE_SIZE))
+ #define DATA_X (tile_x * TILE_SIZE)
+
+ fseek(fp, DATA_Y+DATA_X, SEEK_SET);
+
+ printf("Creating tile (%d,%d)...\n", tile_x, tile_y);
+
+ for (y = 0; y < TILE_SIZE; y++)
+ {
+ fread(buf, TILE_SIZE, 1, fp);
+ for (x = 0; x < TILE_SIZE; x++)
+ {
+#ifdef BW
+ if (buf[x] % 2)
+ {
+ buffer(x,y,0) = buffer(x,y,1) = buffer(x,y,2) = 255;
+ } else {
+ buffer(x,y,0) = buffer(x,y,1) = buffer(x,y,2) = 0;
+ }
+#else
+ buffer(x,y,0) = 0;
+ buffer(x,y,1) = buf[x];
+ buffer(x,y,2) = 0;
+#endif
+ }
+ // Seek and wrap around to next Y pos for tile
+ fseek(fp, IMAGE_SIZE-TILE_SIZE, SEEK_CUR);
+ }
+ sprintf(out_name,"%d,%d.png",tile_x,tile_y);
+ buffer.save(out_name);
+ }
+ }
+ fclose(fp);
+ free(buf);
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+//#ifdef BLACK
+// if (buf[x] == 255)
+// {
+// buffer(x,y,0) = 0;
+// buffer(x,y,1) = 0;
+// buffer(x,y,2) = 0;
+// } else {
+//#endif
+
+//#ifdef BLACK
+// }
+//#endif
+// printf("%d,%d\n",x,y);
generated by cgit v1.1 at 2025-10-31 12:46:55 +0000