The following very simple example creates a PNG image file in golang. It first creates a Image structure and then populates this with random data. <\/p>\n
A file is then creating using os.Create, this is used as a io.Writer to which golang’s PNG encoder in image\/png writes the encoded PNG data via the png.Encode function.<\/p>\n
\r\npackage main\r\n\r\nimport (\r\n "image"\r\n "image\/png"\r\n "image\/color"\r\n "os"\r\n "math\/rand"\r\n)\r\n\r\n\r\nfunc main() {\r\n\r\n myimage := image.NewRGBA(image.Rectangle{image.Point{0,0},image.Point{100,100}})\r\n\r\n \/\/ This loop just fills the image with random data\r\n for x := 0; x < 100; x++ {\r\n for y := 0; y < 100; y++ {\r\n c := color.RGBA{uint8(rand.Intn(255)),uint8(rand.Intn(255)),uint8(rand.Intn(255)),255}\r\n myimage.Set(x,y,c)\r\n }\r\n }\r\n\r\n myfile, _ := os.Create("test.png")\r\n\r\n png.Encode(myfile, myimage)\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"The following very simple example creates a PNG image file in golang. It first creates a Image structure and then populates this with random data. A file is then creating using os.Create, this is used as a io.Writer to which golang’s PNG encoder in image\/png writes the encoded PNG data via the png.Encode function. package […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-2363","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1RRoU-C7","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/2363","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/comments?post=2363"}],"version-history":[{"count":1,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/2363\/revisions"}],"predecessor-version":[{"id":2364,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/2363\/revisions\/2364"}],"wp:attachment":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/media?parent=2363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/categories?post=2363"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/tags?post=2363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}