{"id":3598,"date":"2018-01-16T12:59:48","date_gmt":"2018-01-16T04:59:48","guid":{"rendered":"http:\/\/www.bookcard.net\/wordpress\/?p=3598"},"modified":"2018-10-14T21:31:28","modified_gmt":"2018-10-14T13:31:28","slug":"opengl_camera_rotate_translate","status":"publish","type":"post","link":"https:\/\/www.bookcard.net\/wordpress\/opengl_camera_rotate_translate\/","title":{"rendered":"OpenGL\u4e4b\u76f8\u6a5f-\u65cb\u8f49\u548c\u5e73\u79fb"},"content":{"rendered":"
\"\"<\/a>
OpenGL\u4e4b\u76f8\u6a5f-\u65cb\u8f49\u548c\u5e73\u79fb<\/figcaption><\/figure>\n

\u76f8\u6a5fCAMERA\u56fa\u5b9a\u5728\u539f\u9ede,\u901a\u904e\u65cb\u8f49\u548c\u5e73\u79fb\u5728\u4e16\u754c\u5750\u6a19\u4e2d\u79fb\u52d5\u6240\u6709\u6a21\u578b<\/p>\n

\u76f8\u6a5f\u8a2d\u5b9a\u793a\u4f8b:<\/p>\n

    \n
  1. glMatrixMode(GL_MODELVIEW);\u8a2d\u5b9a\u6a21\u578b\u8996\u5716\u77e9\u9663<\/li>\n
  2. glLoadIdentity()\u5c07\u89c0\u5bdf\u77e9\u9663\u8f09\u5165\u55ae\u4f4d\u77e9\u9663,\u76f8\u6a5f\u4f4d\u65bc\u539f\u9ede(0,0,0), \u671d\u5411\u70ba\u8ca0Z\u8ef8 (0,-90,0)<\/li>\n
  3. glRotatef(AngleZ,0f,0.0f,1.0f); \u6a6b\u6416\/\u5074\u6efe\u89d2\u7e5eZ\u8ef8\u65cb\u8f49<\/li>\n
  4. glRotatef(AngleY+90,0f,1.0f,0.0f); \u504f\u822a\/\u822a\u5411\u89d2\u7e5eY\u8ef8\u65cb,\u88dc\u511f90\u5ea6<\/li>\n
  5. glRotatef(AngleX,0f,0.0f,0.0f); \u50be\u659c\/\u4fef\u4ef0\u89d2\u7e5eX\u8ef8\u65cb\u8f49<\/li>\n
  6. glTranslatef(-posX,-posY,-posZ);\u79fb\u52d5\u6a21\u578b\u5750\u6a19<\/li>\n<\/ol>\n\n\n\n\n\n
    \u8996\u5716\u8b8a\u63db(VIEW transformation)<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    void glRotatef (<\/p>\n

    GLfloat angle,<\/p>\n

    GLfloat x, GLfloat y,GLfloat z);<\/td>\n

    		\u65cb\u8f49<\/p>\n

    Angle:\u65cb\u8f49\u89d2\u5ea6<\/p>\n

    x,y,z:\u8ef8\u5411\u91cf<\/td>\n<\/tr>\n

    void glTranslatef (<\/p>\n

    GLfloat x, GLfloat y, GLfloat z);<\/td>\n

    		\u5e73\u79fb<\/p>\n

    x,y,z:\u504f\u79fb\u5411\u91cf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

     <\/p>\n\n\n\n\n\n\n
    \u65cb\u8f49<\/td>\n\u8ef8<\/td>\n\u89d2<\/td>\n<\/tr>\n
    glRotatef(AngleZ,0.0f,0.0f,1.0f);<\/td>\nZ\u8ef8<\/td>\n\u6a6b\u6416\/\u5074\u6efe<\/td>\n<\/tr>\n
    glRotatef(AngleY+90,0.0f,1.0f,0.0f);<\/td>\nY\u8ef8\u88dc\u511f+90\u5ea6<\/td>\n\u504f\u822a\/\u822a\u5411<\/td>\n<\/tr>\n
    glRotatef(AngleX,1.0f,0.0f,0.0f);<\/td>\nX\u8ef8<\/td>\n\u50be\u659c\/\u4fef\u4ef0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

     <\/p>\n\n\n\n\n
    \u5e73\u79fb<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    glTranslatef(-posX,-posY,-posZ);<\/td>\n\u53cd\u65b9\u5411\u79fb\u52d5\u6a21\u578b\u5750\u6a19<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u76f8\u6a5f\u79fb\u52d5\u7a0b\u5f0f\u6f14\u793a:\u4e0b\u8f09<\/a><\/p>\n

      \n
    1. \u6309UP\/DOWN\u9375\u524d\u5f8c\u79fb\u52d5<\/li>\n
    2. \u6309LEFT\/RIGHT\u9375\u5de6\u53f3\u65cb\u8f49,\u7e5eY\u8ef8\u65cb\u8f49<\/li>\n
    3. \u5c0f\u9375\u76e44\/6\u7e5eZ\u8ef8\u65cb\u8f49<\/li>\n
    4. \u5c0f\u9375\u76e48\/2\u7e5eX\u8ef8\u65cb\u8f49<\/li>\n
    5. \u6309F1\u9375\u6253\u958b\u5e6b\u52a9<\/li>\n
    6. \u6309ESC\u9375\u76f8\u6a5f\u8fd4\u56de\u539f\u9ede<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

      \u76f8\u6a5fCAMERA\u56fa\u5b9a\u5728\u539f\u9ede,\u901a\u904e\u65cb\u8f49\u548c\u5e73\u79fb\u5728\u4e16\u754c\u5750\u6a19\u4e2d\u79fb\u52d5\u6240\u6709\u6a21\u578b \u76f8\u6a5f\u8a2d\u5b9a\u793a\u4f8b: glMatrixMode( … <\/p>\n

      \u7e7c\u7e8c\u95b1\u8b80 OpenGL\u4e4b\u76f8\u6a5f-\u65cb\u8f49\u548c\u5e73\u79fb<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62],"tags":[50],"class_list":["post-3598","post","type-post","status-publish","format-standard","hentry","category-opengl","tag-opengl","entry"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/3598","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/comments?post=3598"}],"version-history":[{"count":3,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/3598\/revisions"}],"predecessor-version":[{"id":3609,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/3598\/revisions\/3609"}],"wp:attachment":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/media?parent=3598"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/categories?post=3598"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/tags?post=3598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}