{"id":3971,"date":"2018-04-21T16:01:32","date_gmt":"2018-04-21T08:01:32","guid":{"rendered":"http:\/\/www.bookcard.net\/wordpress\/?p=3971"},"modified":"2018-10-14T21:20:11","modified_gmt":"2018-10-14T13:20:11","slug":"opengl_font_3d","status":"publish","type":"post","link":"https:\/\/www.bookcard.net\/wordpress\/opengl_font_3d\/","title":{"rendered":"OpenGL\u4e4b3D\u8f2a\u5ed3\u5b57\u9ad4"},"content":{"rendered":"
\"\"<\/a>
OpenGL\u4e4b3D\u8f2a\u5ed3\u5b57\u9ad4<\/figcaption><\/figure>\n

\u4e4b\u524d\u4e00\u76f4\u4f7f\u7528Windows\u81ea\u5e36\u5b57\u9ad4\u8f38\u51fa\u6587\u672c,\u4f46\u53ea\u96502D\u7684\u300e\u4f4d\u5716\u5b57\u9ad4<\/a>\u300f.\u5728Windows\u4e0b\u6709\u7368\u6709\u8f2a\u5ed3\u5b57\u9ad4\u51fd\u5f0f.\u8b93\u6587\u672c\u5177\u6709\u4e00\u5b9a\u7684\u539a\u5ea6.\u8b93\u6240\u6709\u7684Windows\u5b57\u9ad4\u8f49\u63db\u62103D\u5b57\u9ad4.\u6f14\u793a\u7a0b\u5f0f\u53ef\u8f38\u5165\u82f1\u6587\u5b57\u7b26,\u4e0b\u8f09\u7a0b\u5f0f<\/a>:<\/p>\n

1.\u5b58\u5132\u8f2a\u5ed3\u5b57\u9ad4\u4f4d\u7f6e\u548c\u65b9\u5411,\u751f\u6210256\u500bGLYPHMETRICSFLOAT\u8b8a\u91cf<\/p>\n

GLYPHMETRICSFLOAT gmf[256];<\/p>\n

2.\u5275\u5efa\u5927\u5c0f\u70ba256\u500b\u5b57\u7b26\u7684\u986f\u793a\u5217\u8868,\u5c0d\u6240\u6709256\u500bASCII\u78bc\u652f\u6301.<\/p>\n

UINT base;\/\/ \u986f\u793a\u5217\u8868\u7684BASE ID<\/p>\n

base = glGenLists(256);<\/p>\n

3.\u5275\u5efa\u5b57\u9ad4\u53e5\u67c4<\/p>\n

HFONT font\uff1b<\/p>\n

font=CreateFont(1,0,0,0,FW_BOLD,FALSE,FALSE,FALSE,ANSI_CHARSET,OUT_TT_PRECIS,CLIP_DEFAULT_PRECIS,NTIALIASED_QUALITY,FF_DONTCARE|DEFAULT_PITCH,”Arial”);<\/p>\n

4.\u70ba\u5b57\u9ad4\u9078\u64c7\u8a2d\u5099\u74b0\u5883<\/p>\n

SelectObject(hDC,font);<\/p>\n

5.\u5275\u5efa3D\u8f2a\u5ed3\u5b57\u9ad4,\u6bcf\u500bASCII\u5c0d\u61c9\u4e00\u500b\u8f2a\u5ed3\u5b57\u9ad4<\/p>\n

wglUseFontOutlines(hDC,0,256,base,0.0f,FONT3D_DEPTH,WGL_FONT_POLYGONS,gmf);<\/p>\n

6.\u8907\u88fd\u7576\u524d\u77e9\u9663\u4e26\u58d3\u68e7<\/p>\n

glPushMatrix();<\/p>\n

7.\u5c07\u6587\u672c\u5b9a\u4f4d\u65bc\u5834\u666f\u7a7a\u9593\u7684\u4e2d\u592e.\u8a08\u7b97\u6587\u672c\u7684\u9577\u5ea6<\/p>\n

length = (int)strlen(text);<\/p>\n

for(int i=0;i<length; ++i)<\/p>\n

{<\/p>\n

char\u00a0 c = text[i];<\/p>\n

width = width + gmf[c].gmfCellIncX;<\/p>\n

if(gmf[c].gmfCellIncX > height )<\/p>\n

height = gmf[c].gmfCellIncX;<\/p>\n

}<\/p>\n

8.\u8a2d\u5b9a\u6587\u672c\u5ea7\u6a19<\/p>\n

glTranslatef(posX – (width0.1f)\/2.0f,posY – (height<\/em>0.1f)\/2.0f ,posZ + (FONT3D_DEPTH*0.1f)\/2.0f);<\/p>\n

9.\u986f\u793a\u5217\u8868\u5c6c\u6027\u58d3\u68e7<\/p>\n

glPushAttrib(GL_LIST_BIT);<\/p>\n

10.\u8f09\u5165\u986f\u793a\u5217\u8868ID<\/p>\n

glListBase(base);<\/p>\n

11.\u6e32\u67d3\u6587\u672c<\/p>\n

glCallLists((int)strlen(text),GL_UNSIGNED_BYTE,text);<\/p>\n

12.\u986f\u793a\u5217\u8868\u5c6c\u6027\u51fa\u68e7<\/p>\n

glPopAttrib();<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e4b\u524d\u4e00\u76f4\u4f7f\u7528Windows\u81ea\u5e36\u5b57\u9ad4\u8f38\u51fa\u6587\u672c,\u4f46\u53ea\u96502D\u7684\u300e\u4f4d\u5716\u5b57\u9ad4\u300f.\u5728Windows\u4e0b\u6709\u7368\u6709\u8f2a\u5ed3\u5b57\u9ad4\u51fd\u5f0f.\u8b93 … <\/p>\n

\u7e7c\u7e8c\u95b1\u8b80 OpenGL\u4e4b3D\u8f2a\u5ed3\u5b57\u9ad4<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62],"tags":[50],"class_list":["post-3971","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\/3971","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=3971"}],"version-history":[{"count":4,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/3971\/revisions"}],"predecessor-version":[{"id":3978,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/3971\/revisions\/3978"}],"wp:attachment":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/media?parent=3971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/categories?post=3971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/tags?post=3971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}