1 files changed, 123 insertions, 0 deletions
diff --git a/gst/goom/surf3d.c b/gst/goom/surf3d.c
new file mode 100644
index 00000000..f6810f85
--- /dev/null
+++ b/gst/goom/surf3d.c
@@ -0,0 +1,123 @@
+#include "surf3d.h"
+#include "goom_plugin_info.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+grid3d *
+grid3d_new (int sizex, int defx, int sizez, int defz, v3d center)
+{
+  int x = defx;
+  int y = defz;
+  grid3d *g = malloc (sizeof (grid3d));
+  surf3d *s = &(g->surf);
+
+  s->nbvertex = x * y;
+  s->vertex = malloc (x * y * sizeof (v3d));
+  s->svertex = malloc (x * y * sizeof (v3d));
+  s->center = center;
+
+  g->defx = defx;
+  g->sizex = sizex;
+  g->defz = defz;
+  g->sizez = sizez;
+  g->mode = 0;
+
+  while (y) {
+    --y;
+    x = defx;
+    while (x) {
+      --x;
+      s->vertex[x + defx * y].x = (float) (x - defx / 2) * sizex / defx;
+      s->vertex[x + defx * y].y = 0;
+      s->vertex[x + defx * y].z = (float) (y - defz / 2) * sizez / defz;
+    }
+  }
+  return g;
+}
+
+void
+grid3d_draw (PluginInfo * plug, grid3d * g, int color, int colorlow,
+    int dist, Pixel * buf, Pixel * back, int W, int H)
+{
+
+  int x;
+  v2d v2, v2x;
+
+  v2d *v2_array = malloc (g->surf.nbvertex * sizeof (v2d));
+
+  v3d_to_v2d (g->surf.svertex, g->surf.nbvertex, W, H, dist, v2_array);
+
+  for (x = 0; x < g->defx; x++) {
+    int z;
+
+    v2x = v2_array[x];
+
+    for (z = 1; z < g->defz; z++) {
+      v2 = v2_array[z * g->defx + x];
+      if (((v2.x != -666) || (v2.y != -666))
+          && ((v2x.x != -666) || (v2x.y != -666))) {
+        plug->methods.draw_line (buf, v2x.x, v2x.y, v2.x, v2.y, colorlow, W, H);
+        plug->methods.draw_line (back, v2x.x, v2x.y, v2.x, v2.y, color, W, H);
+      }
+      v2x = v2;
+    }
+  }
+
+  free (v2_array);
+}
+
+void
+surf3d_rotate (surf3d * s, float angle)
+{
+  int i;
+  float cosa;
+  float sina;
+
+  SINCOS (angle, sina, cosa);
+  for (i = 0; i < s->nbvertex; i++) {
+    Y_ROTATE_V3D (s->vertex[i], s->svertex[i], cosa, sina);
+  }
+}
+
+void
+surf3d_translate (surf3d * s)
+{
+  int i;
+
+  for (i = 0; i < s->nbvertex; i++) {
+    TRANSLATE_V3D (s->center, s->svertex[i]);
+  }
+}
+
+void
+grid3d_update (grid3d * g, float angle, float *vals, float dist)
+{
+  int i;
+  float cosa;
+  float sina;
+  surf3d *s = &(g->surf);
+  v3d cam = s->center;
+
+  cam.z += dist;
+
+  SINCOS ((angle / 4.3f), sina, cosa);
+  cam.y += sina * 2.0f;
+  SINCOS (angle, sina, cosa);
+
+  if (g->mode == 0) {
+    if (vals)
+      for (i = 0; i < g->defx; i++)
+        s->vertex[i].y = s->vertex[i].y * 0.2 + vals[i] * 0.8;
+
+    for (i = g->defx; i < s->nbvertex; i++) {
+      s->vertex[i].y *= 0.255f;
+      s->vertex[i].y += (s->vertex[i - g->defx].y * 0.777f);
+    }
+  }
+
+  for (i = 0; i < s->nbvertex; i++) {
+    Y_ROTATE_V3D (s->vertex[i], s->svertex[i], cosa, sina);
+    TRANSLATE_V3D (cam, s->svertex[i]);
+  }
+}