tilesaving etc

diff --git a/tools/tilegen/src/main.c b/tools/tilegen/src/main.c
index 5468d6c..3d4b316 100644 (file)
--- a/tools/tilegen/src/main.c
+++ b/tools/tilegen/src/main.c
@@ -1,7 +1,9 @@
 #include <stdio.h>
 #include <stdlib.h>
-#include <GL/glut.h>
+#include <string.h>
+#include <errno.h>
 #include <assert.h>
+#include <GL/glut.h>
 
 struct vec3 {
        float x, y, z;
@@ -14,12 +16,16 @@ void set_view_matrix(int eye, float ipd);
 void set_proj_matrix(int eye, float ipd);
 void reshape(int x, int y);
 void keyb(unsigned char key, int x, int y);
+void save_tiles(void);
+int save_tile(const char *fname, unsigned char *pixptr, int xsz, int ysz, int pitch);
 
 static int win_width = 320;
 static int win_height = 640;
+static int grid_cols = 10;
+static int grid_rows = 20;
 static float aspect;
 static int view = 0;
-static float eye_dist = 1.4;
+static float eye_dist = 1.3;
 
 int main(int argc, char **argv)
 {
@@ -50,7 +56,7 @@ void disp(void)
        set_view_matrix(-1, eye_dist);
        glTranslatef(0, 0, -1);
 
-       draw_field(10, 20);
+       draw_field(grid_cols, grid_rows);
 
        glColorMask(0, 1, 1, 0);
 
@@ -58,7 +64,7 @@ void disp(void)
        set_view_matrix(1, eye_dist);
        glTranslatef(0, 0, -1);
 
-       draw_field(10, 20);
+       draw_field(grid_cols, grid_rows);
 
        glColorMask(1, 1, 1, 1);
 
@@ -75,21 +81,10 @@ void draw_field(int xcells, int ycells)
                        draw_tile(j, i, xcells, ycells);
                }
        }
-
-       /*
-       glBegin(GL_LINES);
-       glColor3f(1, 0, 0);
-       glVertex2f(-100, 0);
-       glVertex2f(100, 0);
-       glColor3f(0, 1, 0);
-       glVertex2f(0, -100);
-       glVertex2f(0, 100);
-       glEnd();
-       */
 }
 
 #define DX     0.4
-#define DZ     0.3
+#define DZ     0.35
 
 static struct vec3 tileverts[] = {
        {-1, -1, 0}, {1, -1, 0}, {1, 1, 0}, {-1, 1, 0},
@@ -97,11 +92,11 @@ static struct vec3 tileverts[] = {
        {1 - DX, 1 - DX, DZ}, {-1 + DX, 1 - DX, DZ}
 };
 static struct vec3 tilecol[] = {
-       {0.8, 0.8, 0.8},        /* left */
+       {0.5, 0.5, 0.5},        /* left */
        {0.2, 0.2, 0.2},        /* bottom */
-       {0.4, 0.4, 0.4},        /* right */
-       {1.0, 1.0, 1.0},        /* top */
-       {0.7, 0.7, 0.7},        /* front */
+       {0.5, 0.5, 0.5},        /* right */
+       {0.8, 0.8, 0.8},        /* top */
+       {0.65, 0.65, 0.65},     /* front */
        {0, 0, 0}, {0, 0, 0}, {0, 0, 0}
 };
 static uint16_t tileidx[] = { /* 3 +---------+ 2 */
@@ -175,5 +170,71 @@ void keyb(unsigned char key, int x, int y)
                view = key - '2';
                glutPostRedisplay();
                break;
+
+       case 's':
+               save_tiles();
+               break;
+
+       case ' ':
+               if(win_height > 160) {
+                       glutReshapeWindow(win_width / 4, win_height / 4);
+               } else {
+                       glutReshapeWindow(win_width * 4, win_height * 4);
+               }
+               glutPostRedisplay();
+               break;
+       }
+}
+
+
+void save_tiles(void)
+{
+       unsigned char *pixels, *tilepix;
+       int i, j, tilesz = win_height / grid_rows;
+       char fname[256];
+
+       if(!(pixels = malloc(win_width * win_height * 3))) {
+               fprintf(stderr, "failed to allocate pixel buffer\n");
+               return;
        }
+       glReadPixels(0, 0, win_width, win_height, GL_RGB, GL_UNSIGNED_BYTE, pixels);
+
+       for(i=0; i<grid_rows; i++) {
+               for(j=0; j<grid_cols; j++) {
+                       tilepix = pixels + (i * win_width + j) * tilesz * 3;
+
+                       sprintf(fname, "tile-%02d%02d.ppm", j, i);
+                       save_tile(fname, tilepix, tilesz, tilesz, win_width * 3);
+               }
+       }
+}
+
+int save_tile(const char *fname, unsigned char *pixptr, int xsz, int ysz, int pitch)
+{
+       int i, j;
+       FILE *fp;
+
+       printf("saving tile: %s\n", fname);
+
+       if(!(fp = fopen(fname, "wb"))) {
+               fprintf(stderr, "failed to open %s for writing: %s\n", fname, strerror(errno));
+               return -1;
+       }
+
+       pixptr += ysz * pitch;
+       fprintf(fp, "P6\n%d %d\n255\n", xsz, ysz);
+       for(i=0; i<ysz; i++) {
+               pixptr -= pitch;
+               for(j=0; j<xsz; j++) {
+                       int r = pixptr[j * 3];
+                       int g = pixptr[j * 3 + 1];
+                       int b = pixptr[j * 3 + 2];
+                       fputc(r, fp);
+                       fputc(g, fp);
+                       fputc(b, fp);
+               }
+       }
+
+       fclose(fp);
+       return 0;
 }