/** In debug mode, this method is used to draw the frame of the fighters.
\param a_pcName The name of the polygon (in the perl namespace)
\param a_iColor The game color to draw the polygon with.
*/
void CGame::DrawPoly( const char* a_pcName, int a_iColor )
{
AV *poList;
int n;
poList = get_av( a_pcName, FALSE );
if ( poList == NULL )
{
return;
}
n = av_len( poList ) + 1;
if ( n< 2 )
{
return;
}
for ( int i=0; i<n; i += 2 )
{
int j = (i+2) % n;
int x1 = SvIV( *av_fetch( poList, i, false) );
int y1 = SvIV( *av_fetch( poList, i+1, false) );
int x2 = SvIV( *av_fetch( poList, j, false) );
int y2 = SvIV( *av_fetch( poList, j+1, false) );
sge_Line( gamescreen, x1, y1 + m_iYOffset, x2, y2 + m_iYOffset, a_iColor ) ;
}
}
/*
ポリゴン描画
*/
static VALUE drawing_draw_polygon(int argc, VALUE *argv, VALUE self)
{
VALUE vdst;
VALUE pairs;
VALUE mcolor;
VALUE fill;
VALUE aa;
Uint8 alpha;
Uint32 color;
int i, vertexes;
rb_scan_args(argc, argv, "32", &vdst, &pairs, &mcolor, &fill, &aa);
// bitmapメソッドを持っていれば、メソッドの値をvdstとする
VALUE methods = rb_funcall(vdst, rb_intern("methods"), 0);
if(rb_ary_includes(methods, rb_str_intern(rb_str_new2("to_unit"))) == Qfalse &&
rb_ary_includes(methods, rb_str_intern(rb_str_new2("bitmap"))) == Qfalse
)
rb_raise(eMiyakoError, "this method needs sprite have to_method or bitmap method!");
if(rb_ary_includes(methods, rb_str_intern(rb_str_new2("to_unit"))) == Qtrue)
vdst = rb_funcall(vdst, rb_intern("to_unit"), 0);
vdst = rb_funcall(vdst, rb_intern("bitmap"), 0);
vertexes = RARRAY_LEN(pairs);
// 頂点数チェック
if(vertexes > 65536)
rb_raise(eMiyakoError, "too many pairs. pairs is less than 65536.");
// 範囲チェック
for(i=0; i<vertexes; i++)
{
VALUE vertex = *(RARRAY_PTR(pairs)+i);
Sint16 x, y;
get_position(vertex, &x, &y);
}
SDL_Surface *dst = GetSurface(vdst)->surface;
color = value_2_color(rb_funcall(cColor, rb_intern("to_rgb"), 1, mcolor), dst->format, &alpha);
if(RTEST(fill) && RTEST(aa) && alpha < 255)
rb_raise(eMiyakoError, "can't draw filled antialiased alpha polygon");
Sint16 *px = (Sint16 *)malloc(sizeof(Sint16) * vertexes);
Sint16 *py = (Sint16 *)malloc(sizeof(Sint16) * vertexes);
for(i=0; i<vertexes; i++)
{
VALUE vertex = *(RARRAY_PTR(pairs)+i);
get_position(vertex, px+i, py+i);
}
if(!RTEST(fill) && !RTEST(aa) && alpha == 255)
{
for(i=0; i<vertexes-1; i++)
sge_Line(dst, px[i], py[i], px[i+1], py[i+1], color);
sge_Line(dst, px[vertexes-1], py[vertexes-1], px[0], py[0], color);
}
else if(!RTEST(fill) && !RTEST(aa) && alpha < 255)
{
for(i=0; i<vertexes-1; i++)
sge_LineAlpha(dst, px[i], py[i], px[i+1], py[i+1], color, alpha);
sge_LineAlpha(dst, px[vertexes-1], py[vertexes-1], px[0], py[0], color, alpha);
}
else if(!RTEST(fill) && RTEST(aa) && alpha == 255)
{
for(i=0; i<vertexes-1; i++)
sge_AALine(dst, px[i], py[i], px[i+1], py[i+1], color);
sge_AALine(dst, px[vertexes-1], py[vertexes-1], px[0], py[0], color);
}
else if(!RTEST(fill) && RTEST(aa) && alpha < 255)
{
for(i=0; i<vertexes-1; i++)
sge_AALineAlpha(dst, px[i], py[i], px[i+1], py[i+1], color, alpha);
sge_AALineAlpha(dst, px[vertexes-1], py[vertexes-1], px[0], py[0], color, alpha);
}
else if(RTEST(fill) && !RTEST(aa) && alpha == 255)
sge_FilledPolygon(dst, (Uint16)vertexes, px, py, color);
else if(RTEST(fill) && !RTEST(aa) && alpha < 255)
sge_FilledPolygonAlpha(dst, (Uint16)vertexes, px, py, color, alpha);
else if(RTEST(fill) && RTEST(aa) && alpha == 255)
sge_AAFilledPolygon(dst, (Uint16)vertexes, px, py, color);
free(py);
free(px);
return Qnil;
}
