interpolation

[voxscape] / src / main.c

diff --git a/src/main.c b/src/main.c
index 2a5459a..bcf2250 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -34,12 +34,16 @@ int win_width, win_height;
 unsigned int fb[FB_W * FB_H];
 
 int mouse_x, mouse_y, mwarp, mbstate[3];
+int hfilt = VOX_LINEAR, cfilt = VOX_LINEAR;
 
 unsigned int input;
 int32_t pos[2], angle;
 
 struct voxscape *vox;
 
+#define COLOR_HORIZON  0xcc77ff
+#define COLOR_ZENITH   0x5588cc
+
 
 int main(int argc, char **argv)
 {
@@ -76,8 +80,10 @@ int init(void)
        if(!(vox = vox_open("data/height.png", "data/color.png"))) {
                return -1;
        }
-       vox_framebuf(vox, FB_W, FB_H, fb);
+       vox_framebuf(vox, FB_W, FB_H, fb, -1);
        vox_proj(vox, 45, 1, 300);
+       vox_fog(vox, 260, COLOR_HORIZON);
+       vox_filter(vox, hfilt, cfilt);
 
        glfb_setup(FB_W, FB_H, GLFB_RGBA32, FB_W * 4);
        return 0;
@@ -130,7 +136,7 @@ void display(void)
        memset(fb, 0, sizeof fb);
 
        vox_render(vox);
-       vox_sky_grad(vox, 0xcc77ff, 0x5588cc);
+       vox_sky_grad(vox, COLOR_HORIZON, COLOR_ZENITH);
 
        glfb_update(fb);
        glfb_display();
@@ -182,6 +188,20 @@ void keyb(unsigned char key, int x, int y)
                input |= INP_RTURN;
                break;
 
+       case 'h':
+               hfilt ^= 1;
+               printf("filtering: height(%s) color(%s)\n", hfilt ? "linear" : "nearest",
+                               cfilt ? "linear" : "nearest");
+               vox_filter(vox, hfilt, cfilt);
+               break;
+
+       case 'c':
+               cfilt ^= 1;
+               vox_filter(vox, hfilt, cfilt);
+               printf("filtering: height(%s) color(%s)\n", hfilt ? "linear" : "nearest",
+                               cfilt ? "linear" : "nearest");
+               break;
+
        default:
                break;
        }