PDF_lineto
(PHP 4, PECL pdflib >= 1.0.0)
PDF_lineto — Draw a line
Описание
bool PDF_lineto
( resource
$p
, float $x
, float $y
)
Draws a line from the current point to another point. Возвращает TRUE
в случае успешного завершения или FALSE
в случае возникновения ошибки.
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Генерация нетекстовых MIME форматов
- PDF_activate_item
- PDF_add_annotation
- PDF_add_bookmark
- PDF_add_launchlink
- PDF_add_locallink
- PDF_add_nameddest
- PDF_add_note
- PDF_add_outline
- PDF_add_pdflink
- PDF_add_table_cell
- PDF_add_textflow
- PDF_add_thumbnail
- PDF_add_weblink
- PDF_arc
- PDF_arcn
- PDF_attach_file
- PDF_begin_document
- PDF_begin_font
- PDF_begin_glyph
- PDF_begin_item
- PDF_begin_layer
- PDF_begin_page_ext
- PDF_begin_page
- PDF_begin_pattern
- PDF_begin_template_ext
- PDF_begin_template
- PDF_circle
- PDF_clip
- PDF_close_image
- PDF_close_pdi_page
- PDF_close_pdi
- PDF_close
- PDF_closepath_fill_stroke
- PDF_closepath_stroke
- PDF_closepath
- PDF_concat
- PDF_continue_text
- PDF_create_3dview
- PDF_create_action
- PDF_create_annotation
- PDF_create_bookmark
- PDF_create_field
- PDF_create_fieldgroup
- PDF_create_gstate
- PDF_create_pvf
- PDF_create_textflow
- PDF_curveto
- PDF_define_layer
- PDF_delete_pvf
- PDF_delete_table
- PDF_delete_textflow
- PDF_delete
- PDF_encoding_set_char
- PDF_end_document
- PDF_end_font
- PDF_end_glyph
- PDF_end_item
- PDF_end_layer
- PDF_end_page_ext
- PDF_end_page
- PDF_end_pattern
- PDF_end_template
- PDF_endpath
- PDF_fill_imageblock
- PDF_fill_pdfblock
- PDF_fill_stroke
- PDF_fill_textblock
- PDF_fill
- PDF_findfont
- PDF_fit_image
- PDF_fit_pdi_page
- PDF_fit_table
- PDF_fit_textflow
- PDF_fit_textline
- PDF_get_apiname
- PDF_get_buffer
- PDF_get_errmsg
- PDF_get_errnum
- PDF_get_font
- PDF_get_fontname
- PDF_get_fontsize
- PDF_get_image_height
- PDF_get_image_width
- PDF_get_majorversion
- PDF_get_minorversion
- PDF_get_parameter
- PDF_get_pdi_parameter
- PDF_get_pdi_value
- PDF_get_value
- PDF_info_font
- PDF_info_matchbox
- PDF_info_table
- PDF_info_textflow
- PDF_info_textline
- PDF_initgraphics
- PDF_lineto
- PDF_load_3ddata
- PDF_load_font
- PDF_load_iccprofile
- PDF_load_image
- PDF_makespotcolor
- PDF_moveto
- PDF_new
- PDF_open_ccitt
- PDF_open_file
- PDF_open_gif
- PDF_open_image_file
- PDF_open_image
- PDF_open_jpeg
- PDF_open_memory_image
- PDF_open_pdi_document
- PDF_open_pdi_page
- PDF_open_pdi
- PDF_open_tiff
- PDF_pcos_get_number
- PDF_pcos_get_stream
- PDF_pcos_get_string
- PDF_place_image
- PDF_place_pdi_page
- PDF_process_pdi
- PDF_rect
- PDF_restore
- PDF_resume_page
- PDF_rotate
- PDF_save
- PDF_scale
- PDF_set_border_color
- PDF_set_border_dash
- PDF_set_border_style
- PDF_set_char_spacing
- PDF_set_duration
- PDF_set_gstate
- PDF_set_horiz_scaling
- PDF_set_info_author
- PDF_set_info_creator
- PDF_set_info_keywords
- PDF_set_info_subject
- PDF_set_info_title
- PDF_set_info
- PDF_set_layer_dependency
- PDF_set_leading
- PDF_set_parameter
- PDF_set_text_matrix
- PDF_set_text_pos
- PDF_set_text_rendering
- PDF_set_text_rise
- PDF_set_value
- PDF_set_word_spacing
- PDF_setcolor
- PDF_setdash
- PDF_setdashpattern
- PDF_setflat
- PDF_setfont
- PDF_setgray_fill
- PDF_setgray_stroke
- PDF_setgray
- PDF_setlinecap
- PDF_setlinejoin
- PDF_setlinewidth
- PDF_setmatrix
- PDF_setmiterlimit
- PDF_setpolydash
- PDF_setrgbcolor_fill
- PDF_setrgbcolor_stroke
- PDF_setrgbcolor
- PDF_shading_pattern
- PDF_shading
- PDF_shfill
- PDF_show_boxed
- PDF_show_xy
- PDF_show
- PDF_skew
- PDF_stringwidth
- PDF_stroke
- PDF_suspend_page
- PDF_translate
- PDF_utf16_to_utf8
- PDF_utf32_to_utf16
- PDF_utf8_to_utf16
Коментарии
function find_length ($x1, $y1, $x2, $y2) {
// Find distance between two points (x1,y1) and (x2,y2)
// Also useful to find length of a line.
return sqrt( pow($x2-$x1,2) + pow($y2-$y1,2) );
}
function find_angle ($x1, $y1, $x2, $y2) {
// This function takes two points (x1,y1) and (x2,y2)
// as inputs and finds the slope and angle of a line
// between those two points. It returns the angle
// and slope in an array. I can't figure out how to
// return a NULL value, so if the two input points
// are in a vertical line, the function returns
// $angle = 90 and $slope = 0. I know this is wrong.
if (($x2-$x1) != 0) {
$slope = ($y2-$y1)/($x2-$x1);
// Get rotation angle by finding the arctangent of the slope
$angle = rad2deg(atan($slope));
if ($x1 > $x2) {
$angle = 180+$angle;
} elseif ($y1 > $y2) {
$angle = 360+$angle;
}
} else {
// Vertical line has no slope, 90deg angle
$angle = 90;
# unset ($slope);
$slope = 0;
}
return array ($angle, $slope);
}