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POHow do I display/draw a .ply object in OpenGL?
 

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  1. POHow do I display/draw a .ply object in OpenGL?
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    <p>I'm trying to make OpenGL draw the figure that I'm loading with <code>OPENFILENAME</code>. What I've got right now is: I can display the comments, vertex, how many faces, etc., but I cannot draw the figure and I'm not sure how to do it. I can draw other predetermined figures, but not the ones I'm trying to open.</p> <hr> <p>This is where I'm initializing everything:</p> <pre><code>case WM_CREATE: hDC = GetDC(hWnd); hRC=wglCreateContext(hDC); wglMakeCurrent(hDC,hRC); g_hwndDlg = CreateDialog(hInst,MAKEINTRESOURCE(IDD_DIALOG1),hWnd,DialogProc); Figure = new DrawFigure(); initGL(); break; </code></pre> <p>This is where I find out what the element I'm opening has:</p> <pre><code> /* go through each kind of element that we learned is in the file */ /* and read them */ for (i = 0; i &lt; nelems; i++) { /* get the description of the first element */ elem_name = elist[i]; plist = ply_get_element_description (ply, elem_name, &amp;num_elems, &amp;nprops); int el=sprintf(szFile,"element %s %d\n", elem_name, num_elems); /* print the name of the element, for debugging */ TextOut(hDC,150,0+i*20,szFile,el); /* if we're on vertex elements, read them in */ if (equal_strings ("vertex", elem_name)) { /* create a vertex list to hold all the vertices */ vlist = (Vertex **) malloc (sizeof (Vertex *) * num_elems); /* set up for getting vertex elements */ ply_get_property (ply, elem_name, &amp;vert_props[0]); ply_get_property (ply, elem_name, &amp;vert_props[1]); ply_get_property (ply, elem_name, &amp;vert_props[2]); /* grab all the vertex elements */ for (j = 0; j &lt; num_elems; j++) { int move=10; /* grab and element from the file */ vlist[j] = (Vertex *) malloc (sizeof (Vertex)); ply_get_element (ply, (void *) vlist[j]); int vert=sprintf(szFile,"vertex: %g %g %g", vlist[j]-&gt;x, vlist[j]-&gt;y, vlist[j]-&gt;z); /* print out vertex x,y,z for debugging */ TextOut(hDC,600,move+j*20,szFile,vert); Figure-&gt;Parameters(vlist[j]-&gt;x, vlist[j]-&gt;y, vlist[j]-&gt;z); } } </code></pre> <p>And this is where the class Figure is, where I'm suppossed to draw everything:</p> <pre><code> Figure::Figure(){ } void Figure::Parameters(float x,float y,float z) { this-&gt;x1=x; this-&gt;y1=y; this-&gt;z1=z; } void Figure::Draw() { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); gluLookAt(0.0,0.0,4.0,0.0,0.0,0.0,0.0,1.0,0.0); glBegin(GL_TRIANGLES); glNormal3f(x1,y1,z1); glVertex3f(x1,y1,z1); glEnd(); } x1,y1,z1 are declared in Figure.h </code></pre> <p>I tried to explain myself the best I could; if you think it still needs more explanation please tell me and I will try to explain it in a different way</p> <p>Yeah, I forgot to explain I guess the figure I'm trying to draw...well i don't know which figure it would be because I'm using OPENFILENAME to open 1 random figure and draw it i used triangles because i thought that with triangles i could draw anything and also i tried in the class Parameters ask for the number of vertex I'm dealing with and making a "for" in the class Draw but it didn't work </p>
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