1 files changed, 333 insertions, 0 deletions

diff --git a/gst/goom/tentacle3d.c b/gst/goom/tentacle3d.c
new file mode 100644
index 00000000..44503934
--- /dev/null
+++ b/gst/goom/tentacle3d.c
@@ -0,0 +1,333 @@
+#include <stdlib.h>
+
+#include "v3d.h"
+#include "surf3d.h"
+#include "goom_tools.h"
+#include "goom_config.h"
+#include "goom_plugin_info.h"
+#include "tentacle3d.h"
+
+#define D 256.0f
+
+#define nbgrid 6
+#define definitionx 15
+#define definitionz 45
+
+typedef struct _TENTACLE_FX_DATA
+{
+  PluginParam enabled_bp;
+  PluginParameters params;
+
+  float cycle;
+  grid3d *grille[nbgrid];
+  float *vals;
+
+#define NB_TENTACLE_COLORS 4
+  int colors[NB_TENTACLE_COLORS];
+
+  int col;
+  int dstcol;
+  float lig;
+  float ligs;
+
+  /* statics from pretty_move */
+  float distt;
+  float distt2;
+  float rot;                    /* entre 0 et 2 * M_PI */
+  int happens;
+  int rotation;
+  int lock;
+} TentacleFXData;
+
+static void tentacle_new (TentacleFXData * data);
+static void tentacle_update (PluginInfo * goomInfo, Pixel * buf, Pixel * back,
+    int W, int H, short[2][512], float, int drawit, TentacleFXData * data);
+static void tentacle_free (TentacleFXData * data);
+
+/* 
+ * VisualFX wrapper for the tentacles
+ */
+
+static void
+tentacle_fx_init (VisualFX * _this, PluginInfo * info)
+{
+
+  TentacleFXData *data = (TentacleFXData *) malloc (sizeof (TentacleFXData));
+
+  data->enabled_bp = secure_b_param ("Enabled", 1);
+  data->params = plugin_parameters ("3D Tentacles", 1);
+  data->params.params[0] = &data->enabled_bp;
+
+  data->cycle = 0.0f;
+  data->col =
+      (0x28 << (ROUGE * 8)) | (0x2c << (VERT * 8)) | (0x5f << (BLEU * 8));
+  data->dstcol = 0;
+  data->lig = 1.15f;
+  data->ligs = 0.1f;
+
+  data->distt = 10.0f;
+  data->distt2 = 0.0f;
+  data->rot = 0.0f;             /* entre 0 et 2 * M_PI */
+  data->happens = 0;
+
+  data->rotation = 0;
+  data->lock = 0;
+  data->colors[0] =
+      (0x18 << (ROUGE * 8)) | (0x4c << (VERT * 8)) | (0x2f << (BLEU * 8));
+  data->colors[1] =
+      (0x48 << (ROUGE * 8)) | (0x2c << (VERT * 8)) | (0x6f << (BLEU * 8));
+  data->colors[2] =
+      (0x58 << (ROUGE * 8)) | (0x3c << (VERT * 8)) | (0x0f << (BLEU * 8));
+  data->colors[3] =
+      (0x87 << (ROUGE * 8)) | (0x55 << (VERT * 8)) | (0x74 << (BLEU * 8));
+  tentacle_new (data);
+
+  _this->params = &data->params;
+  _this->fx_data = (void *) data;
+}
+
+static void
+tentacle_fx_apply (VisualFX * _this, Pixel * src, Pixel * dest,
+    PluginInfo * goomInfo)
+{
+  TentacleFXData *data = (TentacleFXData *) _this->fx_data;
+
+  if (BVAL (data->enabled_bp)) {
+    tentacle_update (goomInfo, dest, src, goomInfo->screen.width,
+        goomInfo->screen.height, goomInfo->sound.samples,
+        (float) goomInfo->sound.accelvar,
+        goomInfo->curGState->drawTentacle, data);
+  }
+}
+
+static void
+tentacle_fx_free (VisualFX * _this)
+{
+  tentacle_free ((TentacleFXData *) _this->fx_data);
+  free (_this->fx_data);
+}
+
+VisualFX
+tentacle_fx_create (void)
+{
+  VisualFX fx;
+
+  fx.init = tentacle_fx_init;
+  fx.apply = tentacle_fx_apply;
+  fx.free = tentacle_fx_free;
+  return fx;
+}
+
+/* ----- */
+
+static void
+tentacle_free (TentacleFXData * data)
+{
+  /* TODO : un vrai FREE GRID!! */
+  free (data->vals);
+}
+
+static void
+tentacle_new (TentacleFXData * data)
+{
+  int tmp;
+
+  v3d center = { 0, -17.0, 0 };
+  data->vals = (float *) malloc ((definitionx + 20) * sizeof (float));
+
+  for (tmp = 0; tmp < nbgrid; tmp++) {
+    int x, z;
+
+    z = 45 + rand () % 30;
+    x = 85 + rand () % 5;
+    center.z = z;
+    data->grille[tmp] =
+        grid3d_new (x, definitionx, z, definitionz + rand () % 10, center);
+    center.y += 8;
+  }
+}
+
+static inline unsigned char
+lighten (unsigned char value, float power)
+{
+  int val = value;
+  float t = (float) val * log10 (power) / 2.0;
+
+  if (t > 0) {
+    val = (int) t;              /* (32.0f * log (t)); */
+    if (val > 255)
+      val = 255;
+    if (val < 0)
+      val = 0;
+    return val;
+  } else {
+    return 0;
+  }
+}
+
+static void
+lightencolor (int *col, float power)
+{
+  unsigned char *color;
+
+  color = (unsigned char *) col;
+  *color = lighten (*color, power);
+  color++;
+  *color = lighten (*color, power);
+  color++;
+  *color = lighten (*color, power);
+  color++;
+  *color = lighten (*color, power);
+}
+
+/* retourne x>>s , en testant le signe de x */
+#define ShiftRight(_x,_s) ((_x<0) ? -(-_x>>_s) : (_x>>_s))
+
+static int
+evolutecolor (unsigned int src, unsigned int dest,
+    unsigned int mask, unsigned int incr)
+{
+
+  int color = src & (~mask);
+
+  src &= mask;
+  dest &= mask;
+
+  if ((src != mask)
+      && (src < dest))
+    src += incr;
+
+  if (src > dest)
+    src -= incr;
+  return (src & mask) | color;
+}
+
+static void
+pretty_move (PluginInfo * goomInfo, float cycle, float *dist, float *dist2,
+    float *rotangle, TentacleFXData * fx_data)
+{
+
+  float tmp;
+
+  /* many magic numbers here... I don't really like that. */
+  if (fx_data->happens)
+    fx_data->happens -= 1;
+  else if (fx_data->lock == 0) {
+    fx_data->happens =
+        goom_irand (goomInfo->gRandom,
+        200) ? 0 : 100 + goom_irand (goomInfo->gRandom, 60);
+    fx_data->lock = fx_data->happens * 3 / 2;
+  } else
+    fx_data->lock--;
+
+  tmp = fx_data->happens ? 8.0f : 0;
+  *dist2 = fx_data->distt2 = (tmp + 15.0f * fx_data->distt2) / 16.0f;
+
+  tmp = 30 + D - 90.0f * (1.0f + sin (cycle * 19 / 20));
+  if (fx_data->happens)
+    tmp *= 0.6f;
+
+  *dist = fx_data->distt = (tmp + 3.0f * fx_data->distt) / 4.0f;
+
+  if (!fx_data->happens) {
+    tmp = M_PI * sin (cycle) / 32 + 3 * M_PI / 2;
+  } else {
+    fx_data->rotation =
+        goom_irand (goomInfo->gRandom,
+        500) ? fx_data->rotation : goom_irand (goomInfo->gRandom, 2);
+    if (fx_data->rotation)
+      cycle *= 2.0f * M_PI;
+    else
+      cycle *= -1.0f * M_PI;
+    tmp = cycle - (M_PI * 2.0) * floor (cycle / (M_PI * 2.0));
+  }
+
+  if (abs (tmp - fx_data->rot) > abs (tmp - (fx_data->rot + 2.0 * M_PI))) {
+    fx_data->rot = (tmp + 15.0f * (fx_data->rot + 2 * M_PI)) / 16.0f;
+    if (fx_data->rot > 2.0 * M_PI)
+      fx_data->rot -= 2.0 * M_PI;
+    *rotangle = fx_data->rot;
+  } else if (abs (tmp - fx_data->rot) > abs (tmp - (fx_data->rot - 2.0 * M_PI))) {
+    fx_data->rot = (tmp + 15.0f * (fx_data->rot - 2.0 * M_PI)) / 16.0f;
+    if (fx_data->rot < 0.0f)
+      fx_data->rot += 2.0 * M_PI;
+    *rotangle = fx_data->rot;
+  } else
+    *rotangle = fx_data->rot = (tmp + 15.0f * fx_data->rot) / 16.0f;
+}
+
+static void
+tentacle_update (PluginInfo * goomInfo, Pixel * buf, Pixel * back, int W, int H,
+    short data[2][512], float rapport, int drawit, TentacleFXData * fx_data)
+{
+
+  int tmp;
+  int tmp2;
+
+  int color;
+  int colorlow;
+
+  float dist, dist2, rotangle;
+
+  if ((!drawit) && (fx_data->ligs > 0.0f))
+    fx_data->ligs = -fx_data->ligs;
+
+  fx_data->lig += fx_data->ligs;
+
+  if (fx_data->lig > 1.01f) {
+    if ((fx_data->lig > 10.0f) | (fx_data->lig < 1.1f))
+      fx_data->ligs = -fx_data->ligs;
+
+    if ((fx_data->lig < 6.3f) && (goom_irand (goomInfo->gRandom, 30) == 0))
+      fx_data->dstcol = goom_irand (goomInfo->gRandom, NB_TENTACLE_COLORS);
+
+    fx_data->col =
+        evolutecolor (fx_data->col, fx_data->colors[fx_data->dstcol], 0xff,
+        0x01);
+    fx_data->col =
+        evolutecolor (fx_data->col, fx_data->colors[fx_data->dstcol], 0xff00,
+        0x0100);
+    fx_data->col =
+        evolutecolor (fx_data->col, fx_data->colors[fx_data->dstcol], 0xff0000,
+        0x010000);
+    fx_data->col =
+        evolutecolor (fx_data->col, fx_data->colors[fx_data->dstcol],
+        0xff000000, 0x01000000);
+
+    color = fx_data->col;
+    colorlow = fx_data->col;
+
+    lightencolor (&color, fx_data->lig * 2.0f + 2.0f);
+    lightencolor (&colorlow, (fx_data->lig / 3.0f) + 0.67f);
+
+    rapport = 1.0f + 2.0f * (rapport - 1.0f);
+    rapport *= 1.2f;
+    if (rapport > 1.12f)
+      rapport = 1.12f;
+
+    pretty_move (goomInfo, fx_data->cycle, &dist, &dist2, &rotangle, fx_data);
+
+    for (tmp = 0; tmp < nbgrid; tmp++) {
+      for (tmp2 = 0; tmp2 < definitionx; tmp2++) {
+        float val =
+            (float) (ShiftRight (data[0][goom_irand (goomInfo->gRandom, 511)],
+                10)) * rapport;
+        fx_data->vals[tmp2] = val;
+      }
+
+      grid3d_update (fx_data->grille[tmp], rotangle, fx_data->vals, dist2);
+    }
+    fx_data->cycle += 0.01f;
+    for (tmp = 0; tmp < nbgrid; tmp++)
+      grid3d_draw (goomInfo, fx_data->grille[tmp], color, colorlow, dist, buf,
+          back, W, H);
+  } else {
+    fx_data->lig = 1.05f;
+    if (fx_data->ligs < 0.0f)
+      fx_data->ligs = -fx_data->ligs;
+    pretty_move (goomInfo, fx_data->cycle, &dist, &dist2, &rotangle, fx_data);
+    fx_data->cycle += 0.1f;
+    if (fx_data->cycle > 1000)
+      fx_data->cycle = 0;
+  }
+}