{"id":2700,"date":"2014-02-10T22:23:07","date_gmt":"2014-02-10T19:23:07","guid":{"rendered":"http:\/\/unitycoder.com\/blog\/?p=2700"},"modified":"2014-10-13T20:53:08","modified_gmt":"2014-10-13T17:53:08","slug":"shadow-casting-2d","status":"publish","type":"post","link":"https:\/\/unitycoder.com\/blog\/2014\/02\/10\/shadow-casting-2d\/","title":{"rendered":"Shadow Casting 2D"},"content":{"rendered":"

\"dynamic_shadow_casting_1\"<\/p>\n

Another fake shadow test.. (similar to the old raycast version<\/a>, but should work with Physics2D).
\n*This is currently abandoned..<\/em><\/p>\n

See also:<\/strong>
\nhttp:\/\/unitycoder.com\/blog\/2014\/10\/12\/2d-visibility-shadow-for-unity-indie\/<\/a><\/p>\n

Info:<\/strong>
\n– Testing PseudoAngle <\/a>to sort object positions<\/p>\n

Todo:<\/strong>
\n– Take shadow caster PolygonCollider2D vertices, check which one are visible to play
\n– ..<\/p>\n

Webplayer:<\/strong>
\nhttp:\/\/unitycoder.com\/upload\/demos\/Dynamic2DShadows1\/<\/a> (v1, update speed is 0.1f)<\/p>\n

Related forum topic:<\/strong>
\nhttp:\/\/forum.unity3d.com\/threads\/165283-2D-Dynamic-Shadows<\/a><\/p>\n

—<\/p>\n

Snippets:<\/strong><\/p>\n

PseudoAngle (c#)<\/p>\n

\r\nfloat pseudoAngle(float dx,float dy)\r\n{\r\nfloat ax = Mathf.Abs(dx);\r\nfloat ay = Mathf.Abs(dy);\r\nfloat p = dy\/(ax+ay);\r\nif (dx < 0) p = 2 - p;\r\n\/\/# elif dy < 0: p = 4 + p\r\nreturn p;\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
Another fake shadow test.. (similar to the old raycast version, but should work with Physics2D). *This is currently abandoned.. See also: http:\/\/unitycoder.com\/blog\/2014\/10\/12\/2d-visibility-shadow-for-unity-indie\/ Info: – Testing PseudoAngle to sort object positions Todo: – Take shadow caster PolygonCollider2D vertices, check which one are visible to play – […]<\/p>\n","protected":false},"author":1,"featured_media":2701,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_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},"jetpack_post_was_ever_published":false},"categories":[4,1,3],"tags":[65,7,594,40,593],"class_list":["post-2700","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-demos","category-uncategorized","category-unity3d","tag-2d","tag-fake","tag-pseudoangle","tag-shadow","tag-shadow-casting"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/unitycoder.com\/blog\/wp-content\/uploads\/2014\/02\/dynamic_shadow_casting_1.jpg?fit=680%2C497&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p1KTaT-Hy","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/2700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/comments?post=2700"}],"version-history":[{"count":9,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/2700\/revisions"}],"predecessor-version":[{"id":3317,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/2700\/revisions\/3317"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media\/2701"}],"wp:attachment":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media?parent=2700"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/categories?post=2700"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/tags?post=2700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}