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color changes, optimized for 39 rows

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This commit is contained in:
Egan Ford 2017-04-27 17:37:51 -06:00
parent 7b7ab6627d
commit 0c5f9bdae0
1 changed files with 23 additions and 11 deletions
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34
mandelbrotgr.c
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@ -8,9 +8,15 @@
#define MAX 15
#define NORMAL 0x80
// chanage order and number of colors for different output
// unsigned char colors[16] = { 0xF, 0xE, 0xD, 0xC, 0xB, 0xA, 0x9, 0x8, 0x7, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0 };
unsigned char colors[15] = { 0xE, 0xD, 0xC, 0xB, 0xA, 0x9, 0x8, 0x7, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0 };
// chanage order and number of colors for different output
// default palette
// unsigned char colors[15] = { 0xE, 0xD, 0xC, 0xB, 0xA, 0x9, 0x8, 0x7, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0 };
// redish
// unsigned char colors[15] = { 0xB, 0x3, 0x1, 0x9, 0xD, 0xE, 0xB, 0x4, 0x7, 0x6, 0x2, 0xA, 0x5, 0x8, 0x0 };
// blueish
unsigned char colors[15] = { 0x2, 0x6, 0x7, 0xE, 0xC, 0x4, 0xD, 0x9, 0xB, 0x3, 0x1, 0xA, 0x5, 0x8, 0x0 };
const char text[4][41] = {
"EXAMPLE GR SPLASH SCREEN",
@ -22,7 +28,7 @@ const char text[4][41] = {
int main(int argc, char **argv)
{
int c, r, i, j, k, line = 0;
double xd, yd, x0, y0, x, y, xt, pixelarea, area = 0;
double xd, yd, x0, y0, x, y, xt;
unsigned char screen[24][40];
// clear screen to zeros
@ -34,11 +40,14 @@ int main(int argc, char **argv)
r = 40;
xd = (1.0 - -2.5) / (double) c; // size of x pixel
yd = (1.0 - -1.0) / (double) r; // size of y pixel
pixelarea = xd * yd;
for (i = 0; i < r; i++) {
// 39 rows, set i = 1
for (i = 1; i < r; i++) {
// gr text page translation
line = 3 * ((i / 2) % 8) + i / 16;
// 40 row
// line = 3 * ((i / 2) % 8) + i / 16;
// 39 row
line = 3 * (((i - 1) / 2) % 8) + (i - 1) / 16;
y0 = 1 - i * yd;
for (j = 0; j < c; j++) {
x0 = -2.5 + j * xd;
@ -49,9 +58,12 @@ int main(int argc, char **argv)
x = xt;
k++;
}
screen[line][j] |= (colors[(k - 1) / (MAX / sizeof(colors))] << 4 * (i % 2));
if (k == MAX)
area += pixelarea;
// 39 row
screen[line][j] |= (colors[(k - 1) / (MAX / sizeof(colors))] << 4 * (i % 2 == 0));
// 40 row
//screen[line][j] |= (colors[(k - 1) / (MAX / sizeof(colors))] << 4 * (i % 2));
}
}
@ -63,8 +75,8 @@ int main(int argc, char **argv)
}
for (i = 0; i < 4; i++) {
line = 3 * ((i+20) % 8) + (i+20) / 8;
for (j = 0; j < 20 - strlen(text[i])/2; j++)
line = 3 * ((i + 20) % 8) + (i + 20) / 8;
for (j = 0; j < 20 - strlen(text[i]) / 2; j++)
screen[line][j] = ' ' | NORMAL; // text rows
for (k = 0; k < strlen(text[i]); k++)
screen[line][j++] = text[i][k] | NORMAL;