/*
Method: Image::Info#texture=texture_image
Purpose: Set name of texture to tile onto the image background
*/
VALUE
Info_texture_eq(VALUE self, VALUE texture)
{
Info *info;
Image *image;
char name[MaxTextExtent];
Data_Get_Struct(self, Info, info);
// Delete any existing texture file
if (info->texture)
{
rm_delete_temp_image(info->texture);
magick_free(info->texture);
info->texture = NULL;
}
// If argument is nil we're done
if (texture == Qnil)
{
return self;
}
// Create a temp copy of the texture and store its name in the texture field
image = rm_check_destroyed(texture);
rm_write_temp_image(image, name);
magick_clone_string(&info->texture, name);
return self;
}
/*
Method: Draw#composite(x,y,width,height,img,operator=OverCompositeOp)
Purpose: Implement the "image" drawing primitive
Notes: The "img" argument can be either an ImageList object
or an Image argument.
*/
VALUE
Draw_composite(int argc, VALUE *argv, VALUE self)
{
Draw *draw;
const char *op = "Over";
double x, y, width, height;
CompositeOperator cop = OverCompositeOp;
volatile VALUE image;
Image *comp_img;
struct TmpFile_Name *tmpfile_name;
char name[MaxTextExtent];
// Buffer for "image" primitive
char primitive[MaxTextExtent];
if (argc < 5 || argc > 6)
{
rb_raise(rb_eArgError, "wrong number of arguments (%d for 5 or 6)", argc);
}
// Retrieve the image to composite
image = rm_cur_image(argv[4]);
(void) rm_check_destroyed(image);
x = NUM2DBL(argv[0]);
y = NUM2DBL(argv[1]);
width = NUM2DBL(argv[2]);
height = NUM2DBL(argv[3]);
// The default composition operator is "Over".
if (argc == 6)
{
VALUE_TO_ENUM(argv[5], cop, CompositeOperator);
switch (cop)
{
case AddCompositeOp:
op = "Add";
break;
case AtopCompositeOp:
op = "Atop";
break;
case BumpmapCompositeOp:
op = "Bumpmap";
break;
case ClearCompositeOp:
op = "Clear";
break;
case CopyBlueCompositeOp:
op = "CopyBlue";
break;
case CopyGreenCompositeOp:
op = "CopyGreen";
break;
case CopyOpacityCompositeOp:
op = "CopyOpacity";
break;
case CopyRedCompositeOp:
op = "CopyRed";
break;
case CopyCompositeOp:
op = "Copy";
break;
case DifferenceCompositeOp:
op = "Difference";
break;
case InCompositeOp:
op = "In";
break;
case MinusCompositeOp:
op = "Minus";
break;
case MultiplyCompositeOp:
op = "Multiply";
break;
case OutCompositeOp:
op = "Out";
break;
case OverCompositeOp:
op = "Over";
break;
case PlusCompositeOp:
op = "Plus";
break;
case SubtractCompositeOp:
op = "Subtract";
break;
case XorCompositeOp:
op = "Xor";
break;
default:
rb_raise(rb_eArgError, "unknown composite operator (%d)", cop);
break;
}
}
Data_Get_Struct(self, Draw, draw);
// Create a temp copy of the composite image
Data_Get_Struct(image, Image, comp_img);
rm_write_temp_image(comp_img, name);
// Add the temp filename to the filename array.
// Use Magick storage since we need to keep the list around
// until destroy_Draw is called.
tmpfile_name = magick_malloc(sizeof(struct TmpFile_Name)+strlen(name));
strcpy(tmpfile_name->name, name);
tmpfile_name->next = draw->tmpfile_ary;
draw->tmpfile_ary = tmpfile_name;
// Form the drawing primitive
(void) sprintf(primitive, "image %s %g,%g,%g,%g '%s'", op, x, y, width, height, name);
// Send "primitive" to self.
(void) rb_funcall(self, rb_intern("primitive"), 1, rb_str_new2(primitive));
return self;
}
/**
* Implement the "image" drawing primitive.
*
* Ruby usage:
* - @verbatim Draw#composite(x,y,width,height,img) @endverbatim
* - @verbatim Draw#composite(x,y,width,height,img,operator) @endverbatim
*
* Notes:
* - Default operator is overComposite
* - The "img" argument can be either an ImageList object or an Image
* argument.
*
* @param argc number of input arguments
* @param argv array of input arguments
* @param self this object
* @return self
*/
VALUE
Draw_composite(int argc, VALUE *argv, VALUE self)
{
Draw *draw;
const char *op;
double x, y, width, height;
CompositeOperator cop;
VALUE image;
Image *comp_img;
struct TmpFile_Name *tmpfile_name;
char name[MaxTextExtent];
// Buffer for "image" primitive
char primitive[MaxTextExtent];
if (argc < 5 || argc > 6)
{
rb_raise(rb_eArgError, "wrong number of arguments (%d for 5 or 6)", argc);
}
// Retrieve the image to composite
image = rm_cur_image(argv[4]);
comp_img = rm_check_destroyed(image);
x = NUM2DBL(argv[0]);
y = NUM2DBL(argv[1]);
width = NUM2DBL(argv[2]);
height = NUM2DBL(argv[3]);
cop = OverCompositeOp;
if (argc == 6)
{
VALUE_TO_ENUM(argv[5], cop, CompositeOperator);
}
op = CommandOptionToMnemonic(MagickComposeOptions, cop);
if (rm_strcasecmp("Unrecognized", op) == 0)
{
rb_raise(rb_eArgError, "unknown composite operator (%d)", cop);
}
Data_Get_Struct(self, Draw, draw);
// Create a temp copy of the composite image
rm_write_temp_image(comp_img, name);
// Add the temp filename to the filename array.
// Use Magick storage since we need to keep the list around
// until destroy_Draw is called.
tmpfile_name = magick_malloc(sizeof(struct TmpFile_Name)+strlen(name));
strcpy(tmpfile_name->name, name);
tmpfile_name->next = draw->tmpfile_ary;
draw->tmpfile_ary = tmpfile_name;
// Form the drawing primitive
(void) snprintf(primitive, sizeof(primitive), "image %s %g,%g,%g,%g '%s'", op, x, y, width, height, name);
// Send "primitive" to self.
(void) rb_funcall(self, rb_intern("primitive"), 1, rb_str_new2(primitive));
RB_GC_GUARD(image);
return self;
}