Changeset 3397Tweet

Timestamp:

Feb 21, 2009, 3:26:01 PM (12 years ago)

Author:

Sam Hocevar

Message:

Add a wave filter for crappy sine effects.

Location:

libpipi/trunk/pipi

Files:

• Makefile.am (modified) (1 diff)
• context.c (modified) (2 diffs)
• filter/wave.c (added)
• pipi.h (modified) (1 diff)

libpipi/trunk/pipi/Makefile.am

@@ -73 +73 @@
         filter/transform.c \
         filter/median.c \
-        filter/dilate.c
+        filter/dilate.c \
+        filter/wave.c
 
 quantize_sources = \

libpipi/trunk/pipi/context.c

@@ -89 +89 @@
         { "overlay", 0 },
         { "line", 1 },
+        { "wave", 1 },
 
         /* End marker */
@@ -773 +774 @@
         ctx->nimages++;
     }
+    else if(!strcmp(cmd, "wave"))
+    {
+        pipi_image_t *tmp;
+        char const *arg;
+        va_list ap;
+        float freq, phase, theta, ampx, ampy;
+        int ret;
+
+        if(ctx->nimages < 1)
+            return -1;
+
+        va_start(ap, cmd);
+        arg = va_arg(ap, char const *);
+        va_end(ap);
+
+        ret = sscanf(arg, "%g,%g,%g,%gx%g",
+                     &freq, &phase, &theta, &ampx, &ampy);
+        if(ret < 5)
+            return -1;
+
+        tmp = ctx->images[ctx->nimages - 1];
+        ctx->images[ctx->nimages - 1] = pipi_wave(tmp, freq, phase,
+                                                  theta, ampx, ampy);
+        pipi_free(tmp);
+    }
     else
     {

libpipi/trunk/pipi/pipi.h

@@ -198 +198 @@
 __extern pipi_image_t *pipi_dilate(pipi_image_t *);
 __extern pipi_image_t *pipi_erode(pipi_image_t *);
+__extern pipi_image_t *pipi_wave(pipi_image_t *, double, double,
+                                 double, double, double);
 
 __extern pipi_image_t *pipi_order(pipi_image_t *);