--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/old/simple_pack/task/create_span.cpp	Mon Oct 12 09:39:35 2009 +0900
@@ -0,0 +1,203 @@
+#include <iostream>
+#include "polygon_pack.h"
+#include "spu_span.h"
+using namespace std;
+
+
+static float calc(float f1, float f2,int i, float base){
+  float ans;
+  ans = f1/f2*i + base;
+  return ans;
+}
+
+
+static VertexPack *vMid1(VertexPack *vMid1,VertexPack *vMin, VertexPack *vMid, VertexPack *vMax) {
+  float d,d1;
+  d = (int)vMax->y-(int)vMin->y;
+  d1 = (int)vMid->y - (int)vMin->y;
+  vMid1->tex_x  = calc(vMax->tex_x - vMin->tex_x, d, (int)d1 , vMin->tex_x
+		       );
+  vMid1->tex_y  = calc(vMax->tex_y - vMin->tex_y, d, (int)d1 , vMin->tex_y
+		       );
+  vMid1->x      = calc(vMax->x - vMin->x, d, (int)d1 , vMin->x);
+  vMid1->y      = vMid->y;
+  vMid1->z      = calc(vMax->z - vMin->z, d, (int)d1 , vMin->z);
+  //printf("x:%f y:%f z:%f tex_x:%f tex_y:%f\n",vMid1->x,vMid1->y,vMid1->z,vMid1->tex_x, vMid1->tex_y);
+  return vMid1;
+}
+
+void half_triangle(SPUSPANLIST *ssl, long *tex_addr, long tex_width, long tex_height, VertexPack *vMin, VertexPack *vMid, VertexPack *vMid1) {
+//void half_triangle(SPANPACK *sp, long *tex_addr, long tex_width, long tex_height, VertexPack *vMin, VertexPack *vMid, VertexPack *vMid1) {
+  float tmp_z,tmp_tex1, tmp_tex2 ,tmp_tey1,tmp_tey2;
+  float tmp_xpos,tmp_end,tmp_zpos;
+  int i;
+  //int j;
+  float div_y;
+  float start_z,end_z;
+  float start_tex_x,end_tex_x,start_tex_y,end_tex_y;
+  int x,y,length;
+  int k =0;
+  int l = 1;
+  int start_y = (int)vMid->y;
+  int end_y   = (int)vMin->y; 
+        
+  if (start_y<end_y) { 
+    int i; i=end_y; end_y=start_y; start_y = i;
+    k = 1;
+    l = -1;
+  }
+
+  div_y = start_y - end_y;  // > 0
+
+  //cout << "div_y : " << div_y+1 << endl;
+
+  for(i = k; i < div_y+1; i++) {
+    tmp_xpos = calc(vMid1->x - vMin->x ,div_y, i, vMin->x);
+    tmp_end =  calc(vMid->x  - vMin->x ,div_y, i, vMin->x); 
+    tmp_z =    calc(vMid1->z - vMin->z ,div_y, i, vMin->z);
+    tmp_zpos = calc(vMid->z  - vMin->z ,div_y, i, vMin->z);
+    //printf("x:%f end:%f z:%f zpos:%f\n",tmp_xpos,tmp_end,tmp_z,tmp_zpos);
+
+    tmp_tex1 =((i/(div_y)) * vMid1->tex_x) + \
+      ( ((div_y - i)/(div_y)) * vMin->tex_x); 
+    tmp_tex2 =( (i/(div_y)) * vMid->tex_x) + \
+      ( ((div_y - i)/(div_y)) * vMin->tex_x); 
+
+    tmp_tey1 =( (i/(div_y)) * vMid1->tex_y) + \
+      ( ((div_y - i)/(div_y)) * vMin->tex_y); 
+    tmp_tey2 =( (i/(div_y)) * vMid->tex_y) + \
+      ( ((div_y - i)/(div_y)) * vMin->tex_y); 
+    if(tmp_xpos > tmp_end) {
+      x = (int)tmp_end;
+      y = (int)vMin->y + i*l;
+      length = (int)(tmp_xpos)-(int)(tmp_end)+1;
+      start_z = tmp_zpos;
+      end_z = tmp_z;
+      start_tex_x = tmp_tex2;
+      end_tex_x = tmp_tex1;
+      start_tex_y = tmp_tey2;
+      end_tex_y = tmp_tey1;
+    } else {
+      x = (int)tmp_xpos;
+      y = (int)vMin->y + i*l;
+      length = (int)(tmp_end)-(int)(tmp_xpos)+1;
+      start_z = tmp_z;
+      end_z = tmp_zpos;
+      start_tex_x = tmp_tex1;
+      end_tex_x = tmp_tex2;
+      start_tex_y = tmp_tey1;
+      end_tex_y = tmp_tey2;
+    }
+    //printf("x:%d y:%d end:%d z:%f zpos:%f\n",x,y,length,start_z , end_z);
+    //printf("start_tex_x:%f end_tex_x:%f start_tex_y:%f end_tex_y:%fn",start_tex_x,end_tex_x,start_tex_y,end_tex_y);
+
+    //add(tex_addr,tex_width,tex_height,x,y,length,start_z,end_z,start_tex_x,end_tex_x,start_tex_y,end_tex_y);
+
+    //y += 540;   // window_height = 1080  (1080/2 = 540)
+    y += 240;   // window_height = 480  (480/2 = 240)
+
+    int line_set = y/8;
+
+    //y -= 540;   // window_height = 1080  (1080/2 = 540)
+    y -= 240;   // window_height = 480  (480/2 = 240)
+
+    int spu_no = line_set%6;
+   
+    int spp_no = line_set/6;
+    int span_no = ssl->ss[spu_no].spp[spp_no].info.size;
+
+    ssl->ss[spu_no].spp[spp_no].span[span_no].tex_addr = tex_addr;
+    ssl->ss[spu_no].spp[spp_no].span[span_no].tex_width = tex_width;
+    ssl->ss[spu_no].spp[spp_no].span[span_no].tex_height = tex_height;
+    ssl->ss[spu_no].spp[spp_no].span[span_no].x = x;
+    ssl->ss[spu_no].spp[spp_no].span[span_no].y = y;
+    ssl->ss[spu_no].spp[spp_no].span[span_no].length_x = length;
+    ssl->ss[spu_no].spp[spp_no].span[span_no].start_z = start_z;
+    ssl->ss[spu_no].spp[spp_no].span[span_no].end_z = end_z;
+    ssl->ss[spu_no].spp[spp_no].span[span_no].tex_x1 = start_tex_x;
+    ssl->ss[spu_no].spp[spp_no].span[span_no].tex_x2 = end_tex_x;
+    ssl->ss[spu_no].spp[spp_no].span[span_no].tex_y1 = start_tex_y;
+    ssl->ss[spu_no].spp[spp_no].span[span_no].tex_y2 = end_tex_y;
+
+    ssl->ss[spu_no].spp[spp_no].info.size++;
+  }
+}
+
+
+int create_span(void *rbuf,void *wbuf) {
+  //POLYGONPACK *polygon = (POLYGONPACK*)rbuf;
+  PolygonPack *polygon = (PolygonPack*)rbuf;
+  //SPANPACK *sp = (SPANPACK*)wbuf;
+  //SPANPACKLIST *spl = (SPANPACKLIST*)wbuf;
+  //SPANPACKLIST *spl = polygon->spl;
+  SPUSPANLIST *ssl = polygon->ssl;
+  VertexPack *vMin, *vMid, *vMax, *vMid10;
+  VertexPack ver;
+  vMid10 = &ver;
+
+  //cout << "create_span:spl->size = " << spl->size << endl;
+  //cout << "create_span:spl->dline[0].span = " << spl->dline[0].span << endl;
+
+  //for(int i=0; i<spl->size; i++)
+  for(int i=0; i<6; i++)  // 6 = number of SPU
+    {
+      ssl->ss[i].length = 0;
+      //for(int t=0; t<10; t++)   // window_height = 1080  ( 1080/8/6 = 22.5 )
+      for(int t=0; t<10; t++)    // window_height = 480  (480/8/6 = 10)
+	{
+	  ssl->ss[i].spp[t].info.size = 0;
+	}
+    }
+
+  //sp->info.size = 0;
+
+  //cout << sizeof(SPANPACK) << endl;
+  //cout << "polygon size : " << polygon->info.size << endl;
+
+  for(int a=0; a<polygon->info.size; a++) {
+    //cout << "a = " << a << endl;
+    //cout << "polygon size : " << polygon->info.size << endl;
+    if(polygon->tri[a].ver1.y <= polygon->tri[a].ver2.y) {
+      if(polygon->tri[a].ver2.y <= polygon->tri[a].ver3.y) {
+	vMin = &polygon->tri[a].ver1;
+	vMid = &polygon->tri[a].ver2;
+	vMax = &polygon->tri[a].ver3;
+      } else if(polygon->tri[a].ver3.y <= polygon->tri[a].ver1.y) {
+	vMin = &polygon->tri[a].ver3;
+	vMid = &polygon->tri[a].ver1;
+	vMax = &polygon->tri[a].ver2;
+      } else {
+	vMin = &polygon->tri[a].ver1;
+	vMid = &polygon->tri[a].ver3;
+	vMax = &polygon->tri[a].ver2;
+      }
+    } else {
+      if(polygon->tri[a].ver1.y <= polygon->tri[a].ver3.y) {
+	vMin = &polygon->tri[a].ver2;
+	vMid = &polygon->tri[a].ver1;
+	vMax = &polygon->tri[a].ver3;
+      } else if(polygon->tri[a].ver3.y <= polygon->tri[a].ver2.y) {
+	vMin = &polygon->tri[a].ver3;
+	vMid = &polygon->tri[a].ver2;
+	vMax = &polygon->tri[a].ver1;
+      } else {
+	vMin = &polygon->tri[a].ver2;
+	vMid = &polygon->tri[a].ver3;
+	vMax = &polygon->tri[a].ver1;
+      }
+    }
+
+    //cout << vMid->y << endl;
+    //cout << vMin->y << endl;
+
+    vMid1(vMid10,vMin,vMid,vMax);
+
+    half_triangle(ssl,polygon->tri[a].tex_addr,polygon->tri[a].tex_width,polygon->tri[a].tex_height,vMin,vMid,vMid10);
+    half_triangle(ssl,polygon->tri[0].tex_addr,polygon->tri[0].tex_width,polygon->tri[0].tex_height,vMax,vMid,vMid10);
+    //printf("x:%d y:%d end:%d z:%f zpos:%f\n",sp->span[0].x,sp->span[0].y,sp->span[0].length_x,sp->span[0].start_z , sp->span[0].end_z);
+  }
+  //printf("create_span  x:%d y:%d end:%d z:%f zpos:%f\n",sp->span[0].x,sp->span[0].y,sp->span[0].length_x,sp->span[0].start_z , sp->span[0].end_z);
+  return 0;
+
+  //return sizeof(SPANPACKLIST);
+}