{"id":776,"date":"2012-03-18T22:49:08","date_gmt":"2012-03-18T19:49:08","guid":{"rendered":"http:\/\/unitycoder.com\/blog\/?p=776"},"modified":"2012-11-08T22:34:02","modified_gmt":"2012-11-08T19:34:02","slug":"texture-paint-with-soft-brush","status":"publish","type":"post","link":"https:\/\/unitycoder.com\/blog\/2012\/03\/18\/texture-paint-with-soft-brush\/","title":{"rendered":"Texture Paint with Soft Brush"},"content":{"rendered":"

\"\"<\/a><\/p>\n

Now that the Android Basic is free, trying to make a simple multi-finger painter program as a test..<\/p>\n

Current features:<\/strong>
\n– Orthographic camera, with full view sized drawing plane (see forum: Creating plane of dynamic sizes<\/a>)
\n– Special shader that uses that drawing texture as emission.. (might work with just diffuse also..)
\n– Didnt find any code for drawing soft brush circles using for..loops.., tested MidPoint Circle Algorithm<\/a> but it gives hard edges..(could blur it?)
\n– Now its using “decal splatting”, it takes 1 soft texture brush (see image#2 below), splats that into the drawing texture.
\n– Problem: alpha is not additive..so if you paint and dont move, it gives bad results (hmm..disable painting, if not moving?)<\/p>\n

Todo \/ ideas:<\/strong>
\n– How to fix fast moving?
\n– Use input.touches + raycast? (or no need raycast?)
\n– Add some GUI (clear button..or actually use the shake gesture?)
\n– Add effects? (sliding image, from gyro?)<\/p>\n

Webplayer:<\/strong>
\nhttp:\/\/unitycoder.com\/upload\/demos\/TexturePaintSoftBrush1\/<\/a><\/p>\n

Download source:<\/strong>
\ncoming later..<\/p>\n

—<\/p>\n

Image#2<\/strong>: soft brush texture, 64×64 (alpha values are used for painting)<\/p>\n

\"\"<\/p>\n

—<\/p>\n

Image#3:<\/strong> Profiler statistics for current version (8.11.2012)<\/p>\n

\"\"<\/a> <- click to view full size)<\/em><\/p>\n

—<\/p>\n

Image#4:<\/strong> Quick test with particles, its quite fast 30-45fps on old android galaxy s plus<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Now that the Android Basic is free, trying to make a simple multi-finger painter program as a test.. Current features: – Orthographic camera, with full view sized drawing plane (see forum: Creating plane of dynamic sizes) – Special shader that uses that drawing texture as […]<\/p>\n","protected":false},"author":1,"featured_media":777,"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_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[4,3],"tags":[197,211,209,34,210,208,207,364],"class_list":["post-776","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-demos","category-unity3d","tag-android","tag-decal","tag-finger","tag-paint","tag-smooth-brush","tag-soft-brush","tag-texture-paint","tag-touch"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/unitycoder.com\/blog\/wp-content\/uploads\/2012\/03\/texturepaint_soft_brush1.jpg?fit=680%2C490&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p1KTaT-cw","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/776","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=776"}],"version-history":[{"count":3,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/776\/revisions"}],"predecessor-version":[{"id":1421,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/776\/revisions\/1421"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media\/777"}],"wp:attachment":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media?parent=776"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/categories?post=776"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/tags?post=776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}