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OpenGL/Utah teapot: Difference between revisions

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OpenGL/Utah teapot (view source)

Revision as of 10:34, 8 January 2024

11,642 bytes added ,  5 months ago
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→‎{{header|Wren}}: Minor tidy
(Added Wren)
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This implementation sticks to the task requirements and only shows the teapot, it's rotating, so you can enjoy it's magnificence from all possible viewpoints and perspectives.
<syntaxhighlight lang="c">
<lang C>
#include<gl/freeglut.h>
 
Line 60:
return 0;
}
</syntaxhighlight>
</lang>
 
=={{header|FreeBASIC}}==
<syntaxhighlight lang="freebasic">#include "fbgfx.bi"
#include once "GL/glut.bi"
 
Dim Shared As Double rot = 0.0
 
Sub onIdle Cdecl ()
rot += 0.01
glutPostRedisplay()
End Sub
 
Sub display Cdecl ()
Dim matCol(0 To 3) As Const GLfloat = {1, 0, 0, 0}
glClear GL_COLOR_BUFFER_BIT Or GL_DEPTH_BUFFER_BIT
glPushMatrix()
glRotatef(30, 1, 1, 0)
glRotatef(rot, 0, 1, 1)
glMaterialfv GL_FRONT, GL_DIFFUSE, @matCol(0)
glutWireTeapot(0.5)
glPopMatrix()
glFlush()
End Sub
 
Sub init Cdecl ()
Dim white(0 To 3) As Const GLfloat = {1, 1, 1, 0}
Dim shini(1) As Const GLfloat = {70}
glClearColor(0.5, 0.5, 0.5, 0)
glShadeModel(GL_SMOOTH)
glLightfv(GL_LIGHT0, GL_AMBIENT, @white(0))
glLightfv(GL_LIGHT0, GL_DIFFUSE, @white(0))
glMaterialfv(GL_FRONT, GL_SHININESS, @shini(0))
glEnable(GL_LIGHTING)
glEnable(GL_LIGHT0)
glEnable(GL_DEPTH_TEST)
End Sub
 
Var argc = Cint(0)
glutInit(0, Strptr( " " ))
glutInitDisplayMode GLUT_SINGLE Or GLUT_RGB Or GLUT_DEPTH
glutInitWindowSize(900, 700)
glutCreateWindow("Utah Teapot")
glutIdleFunc(@onIdle)
glutDisplayFunc(@display)
init()
glutMainLoop()</syntaxhighlight>
 
=={{header|Go}}==
Line 67 ⟶ 113:
<br>
Although there are a number of third party Go bindings for OpenGL, the following uses 'cgo' to interface directly with the C libraries.
<langsyntaxhighlight lang="go">package main
 
/*
Line 137 ⟶ 183:
C.glutMainLoop()
C.free(unsafe.Pointer(tlc))
}</langsyntaxhighlight>
 
=={{header|J}}==
Line 144 ⟶ 190:
<br>
Direct translation from C.
<langsyntaxhighlight Jlang="j">NB. Teapot using freeglut
require '~Projects/freeglut/gldefs.ijs'
 
Line 209 ⟶ 255:
glutMainLoop void
void
)</langsyntaxhighlight>
 
=={{header|Julia}}==
Makie implements OpenGL shading graphics as part of its plotting functionality. The files are from the University of Utah site.
<langsyntaxhighlight Julialang="julia">using Makie, FileIO, InfoZIP
 
if stat("newell_teaset/teapot.obj").size == 0
Line 224 ⟶ 270:
rotate!(scene, Quaternion(0.6, 0.2, 0.2, 4.0))
display(scene)
</syntaxhighlight>
</lang>
 
=={{header|Kotlin}}==
Line 238 ⟶ 284:
</pre>
You then need to compile the following Kotlin program, linking against opengl.klib, and run the resulting .kexe file to view the rotating teapot.
<langsyntaxhighlight lang="scala">// Kotlin Native v0.6
 
import kotlinx.cinterop.*
Line 288 ⟶ 334:
glutIdleFunc(staticCFunction(::onIdle))
glutMainLoop()
}</langsyntaxhighlight>
 
=={{header|Nim}}==
Line 294 ⟶ 340:
{{libheader|OpenGL}}
{{libheader|Nim bindings for OpenGL}}
<langsyntaxhighlight Nimlang="nim">import opengl, opengl/glut
 
var
Line 322 ⟶ 368:
glutDisplayFunc(display)
loadExtensions()
glutMainLoop()</langsyntaxhighlight>
 
=={{header|Ol}}==
{{libheader|GL}}{{libheader|GLU}}
<langsyntaxhighlight lang="lisp">
; initial data:
(define vertices '(
Line 441 ⟶ 487:
(for-each render Handle:)
(for-each render Spout:))
</syntaxhighlight>
</lang>
 
=={{header|Phix}}==
{{trans|C}}
<!--<syntaxhighlight lang="phix">(notonline)-->
<lang Phix>include GL/gl.e
<span style="color: #008080;">without</span> <span style="color: #008080;">js</span> <span style="color: #000080;font-style:italic;">-- (freeglut, allocate, poke, OpenGL 1.0)</span>
include GL/freeglut.e
<span style="color: #008080;">include</span> <span style="color: #000000;">GL</span><span style="color: #0000FF;">/</span><span style="color: #000000;">gl</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span>
<span style="color: #008080;">include</span> <span style="color: #000000;">GL</span><span style="color: #0000FF;">/</span><span style="color: #000000;">freeglut</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span>
atom rot = 0;
atom matCol = allocate(16)
<span style="color: #004080;">atom</span> <span style="color: #000000;">rot</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span><span style="color: #0000FF;">;</span>
poke(matCol,
<span style="color: #004080;">atom</span> <span style="color: #000000;">matCol</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">allocate</span><span style="color: #0000FF;">(</span><span style="color: #000000;">16</span><span style="color: #0000FF;">)</span>
atom_to_float32(1) &
<span style="color: #7060A8;">poke</span><span style="color: #0000FF;">(</span><span style="color: #000000;">matCol</span><span style="color: #0000FF;">,</span>
atom_to_float32(0) &
<span style="color: #7060A8;">atom_to_float32</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">&</span>
atom_to_float32(0) &
<span style="color: #7060A8;">atom_to_float32</span><span style="color: #0000FF;">(</span><span style="color: #000000;">0</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">&</span>
atom_to_float32(0)
<span style="color: #7060A8;">atom_to_float32</span><span style="color: #0000FF;">(</span><span style="color: #000000;">0</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">&</span>
)
<span style="color: #7060A8;">atom_to_float32</span><span style="color: #0000FF;">(</span><span style="color: #000000;">0</span><span style="color: #0000FF;">)</span>
<span style="color: #0000FF;">)</span>
function display()
glClear(or_bits(GL_COLOR_BUFFER_BIT, GL_DEPTH_BUFFER_BIT))
<span style="color: #008080;">function</span> <span style="color: #7060A8;">display</span><span style="color: #0000FF;">()</span>
glPushMatrix()
<span style="color: #7060A8;">glClear</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">or_bits</span><span style="color: #0000FF;">(</span><span style="color: #004600;">GL_COLOR_BUFFER_BIT</span><span style="color: #0000FF;">,</span> <span style="color: #004600;">GL_DEPTH_BUFFER_BIT</span><span style="color: #0000FF;">))</span>
glRotatef(30,1,1,0)
<span style="color: #7060A8;">glPushMatrix</span><span style="color: #0000FF;">()</span>
glRotatef(rot,0,1,1)
<span style="color: #7060A8;">glRotatef</span><span style="color: #0000FF;">(</span><span style="color: #000000;">30</span><span style="color: #0000FF;">,</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">)</span>
glMaterialfv(GL_FRONT,GL_DIFFUSE,matCol)
<span style="color: #7060A8;">glRotatef</span><span style="color: #0000FF;">(</span><span style="color: #000000;">rot</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span>
glutWireTeapot(0.5)
<span style="color: #000000;">glMaterialfv</span><span style="color: #0000FF;">(</span><span style="color: #004600;">GL_FRONT</span><span style="color: #0000FF;">,</span><span style="color: #000000;">GL_DIFFUSE</span><span style="color: #0000FF;">,</span><span style="color: #000000;">matCol</span><span style="color: #0000FF;">)</span>
glPopMatrix()
<span style="color: #000000;">glutWireTeapot</span><span style="color: #0000FF;">(</span><span style="color: #000000;">0.5</span><span style="color: #0000FF;">)</span>
glFlush()
<span style="color: #7060A8;">glPopMatrix</span><span style="color: #0000FF;">()</span>
return 0
<span style="color: #7060A8;">glFlush</span><span style="color: #0000FF;">()</span>
end function
<span style="color: #008080;">return</span> <span style="color: #000000;">0</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
function onIdle()
rot += 0.01
<span style="color: #008080;">function</span> <span style="color: #000000;">onIdle</span><span style="color: #0000FF;">()</span>
glutPostRedisplay()
<span style="color: #000000;">rot</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">0.01</span>
return 0
<span style="color: #000000;">glutPostRedisplay</span><span style="color: #0000FF;">()</span>
end function
<span style="color: #008080;">return</span> <span style="color: #000000;">0</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
procedure init()
atom white = allocate(16)
<span style="color: #008080;">procedure</span> <span style="color: #000000;">init</span><span style="color: #0000FF;">()</span>
poke(white,
<span style="color: #004080;">atom</span> <span style="color: #000000;">white</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">allocate</span><span style="color: #0000FF;">(</span><span style="color: #000000;">16</span><span style="color: #0000FF;">)</span>
atom_to_float32(1) &
<span style="color: #7060A8;">poke</span><span style="color: #0000FF;">(</span><span style="color: #000000;">white</span><span style="color: #0000FF;">,</span>
atom_to_float32(1) &
<span style="color: #7060A8;">atom_to_float32</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">&</span>
atom_to_float32(1) &
<span style="color: #7060A8;">atom_to_float32</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">&</span>
atom_to_float32(0)
<span style="color: #7060A8;">atom_to_float32</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">&</span>
)
<span style="color: #7060A8;">atom_to_float32</span><span style="color: #0000FF;">(</span><span style="color: #000000;">0</span><span style="color: #0000FF;">)</span>
atom shini = allocate(4)
<span style="color: #0000FF;">)</span>
poke(shini,
<span style="color: #004080;">atom</span> <span style="color: #000000;">shini</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">allocate</span><span style="color: #0000FF;">(</span><span style="color: #000000;">4</span><span style="color: #0000FF;">)</span>
atom_to_float32(70)
<span style="color: #7060A8;">poke</span><span style="color: #0000FF;">(</span><span style="color: #000000;">shini</span><span style="color: #0000FF;">,</span>
)
<span style="color: #7060A8;">atom_to_float32</span><span style="color: #0000FF;">(</span><span style="color: #000000;">70</span><span style="color: #0000FF;">)</span>
<span style="color: #0000FF;">)</span>
glClearColor(.5,.5,.5,0)
glShadeModel(GL_SMOOTH)
<span style="color: #7060A8;">glClearColor</span><span style="color: #0000FF;">(.</span><span style="color: #000000;">5</span><span style="color: #0000FF;">,.</span><span style="color: #000000;">5</span><span style="color: #0000FF;">,.</span><span style="color: #000000;">5</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">)</span>
glLightfv(GL_LIGHT0,GL_AMBIENT,white)
<span style="color: #7060A8;">glShadeModel</span><span style="color: #0000FF;">(</span><span style="color: #004600;">GL_SMOOTH</span><span style="color: #0000FF;">)</span>
glLightfv(GL_LIGHT0,GL_DIFFUSE,white)
<span style="color: #000000;">glLightfv</span><span style="color: #0000FF;">(</span><span style="color: #004600;">GL_LIGHT0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">GL_AMBIENT</span><span style="color: #0000FF;">,</span><span style="color: #000000;">white</span><span style="color: #0000FF;">)</span>
glMaterialfv(GL_FRONT,GL_SHININESS,shini)
<span style="color: #000000;">glLightfv</span><span style="color: #0000FF;">(</span><span style="color: #004600;">GL_LIGHT0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">GL_DIFFUSE</span><span style="color: #0000FF;">,</span><span style="color: #000000;">white</span><span style="color: #0000FF;">)</span>
glEnable(GL_LIGHTING)
<span style="color: #000000;">glMaterialfv</span><span style="color: #0000FF;">(</span><span style="color: #004600;">GL_FRONT</span><span style="color: #0000FF;">,</span><span style="color: #000000;">GL_SHININESS</span><span style="color: #0000FF;">,</span><span style="color: #000000;">shini</span><span style="color: #0000FF;">)</span>
glEnable(GL_LIGHT0)
<span style="color: #7060A8;">glEnable</span><span style="color: #0000FF;">(</span><span style="color: #004600;">GL_LIGHTING</span><span style="color: #0000FF;">)</span>
glEnable(GL_DEPTH_TEST)
<span style="color: #7060A8;">glEnable</span><span style="color: #0000FF;">(</span><span style="color: #004600;">GL_LIGHT0</span><span style="color: #0000FF;">)</span>
end procedure
<span style="color: #7060A8;">glEnable</span><span style="color: #0000FF;">(</span><span style="color: #004600;">GL_DEPTH_TEST</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">procedure</span>
procedure main()
glutInit()
<span style="color: #008080;">procedure</span> <span style="color: #000000;">main</span><span style="color: #0000FF;">()</span>
glutInitDisplayMode(or_all({GLUT_SINGLE,GLUT_RGB,GLUT_DEPTH}))
<span style="color: #000000;">glutInit</span><span style="color: #0000FF;">()</span>
glutInitWindowSize(900,700)
<span style="color: #000000;">glutInitDisplayMode</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">or_all</span><span style="color: #0000FF;">({</span><span style="color: #000000;">GLUT_SINGLE</span><span style="color: #0000FF;">,</span><span style="color: #000000;">GLUT_RGB</span><span style="color: #0000FF;">,</span><span style="color: #000000;">GLUT_DEPTH</span><span style="color: #0000FF;">}))</span>
{} = glutCreateWindow("The Amazing, Rotating Utah Teapot brought to you in OpenGL via freeglut.")
<span style="color: #000000;">glutInitWindowSize</span><span style="color: #0000FF;">(</span><span style="color: #000000;">900</span><span style="color: #0000FF;">,</span><span style="color: #000000;">700</span><span style="color: #0000FF;">)</span>
init()
<span style="color: #0000FF;">{}</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">glutCreateWindow</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"The Amazing, Rotating Utah Teapot brought to you in OpenGL via freeglut."</span><span style="color: #0000FF;">)</span>
glutDisplayFunc(call_back(routine_id("display")))
<span style="color: #000000;">init</span><span style="color: #0000FF;">()</span>
glutIdleFunc(call_back(routine_id("onIdle")))
<span style="color: #000000;">glutDisplayFunc</span><span style="color: #0000FF;">(</span><span style="color: #000000;">call_back</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">routine_id</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"display"</span><span style="color: #0000FF;">)))</span>
glutMainLoop()
<span style="color: #000000;">glutIdleFunc</span><span style="color: #0000FF;">(</span><span style="color: #000000;">call_back</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">routine_id</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"onIdle"</span><span style="color: #0000FF;">)))</span>
end procedure
<span style="color: #000000;">glutMainLoop</span><span style="color: #0000FF;">()</span>
 
<span style="color: #008080;">end</span> <span style="color: #008080;">procedure</span>
main()</lang>
<span style="color: #000000;">main</span><span style="color: #0000FF;">()</span>
<!--</syntaxhighlight>-->
To run this, you will need the freeglut package from [http://phix.x10.mx/pmwiki/pmwiki.php?n=Main.Freeglut-TheFreeOpenglUtilityToolkit PCAN]
 
=={{header|Raku}}==
{{trans|C}}
<syntaxhighlight lang="raku" perl6line># 20210524 Raku programming solution
 
use NativeCall;
Line 590 ⟶ 639:
glutIdleFunc(&onIdle);
glutMainLoop();
</syntaxhighlight>
</lang>
 
Output: [https://drive.google.com/file/d/1XdLJhCRZ79cwDBPD7XDoRFeNFKc94-kp/view (Offsite Media file) ]
Line 597 ⟶ 646:
{{trans|C}}
{{libheader|FreeGLUT}}
As it's not currently possible for Wren-cli to access OpenGL directly, we embed a Wren script in a C application to complete this task. See the [[OpenGL#wrenWren]] task for some of the issues involved here.
<langsyntaxhighlight ecmascriptlang="wren">/* utah_teapotOpenGL_Utah_teapot.wren */
 
var Rot = 0
Line 700 ⟶ 749:
Glut.displayFunc("GLCallbacks", "display()")
Glut.idleFunc("GLCallbacks", "onIdle()")
Glut.setOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_GLUTMAINLOOP_RETURNS)</langsyntaxhighlight>
<br>
We now embed this Wren script in the following C program, compile and run it.
<langsyntaxhighlight lang="c">#include <stdlib.h>
#include <stdio.h>
#include <string.h>
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vm = wrenNewVM(&config);
const char* module = "main";
const char* fileName = "utah_teapotOpenGL_Utah_teapot.wren";
char *script = readFile(fileName);
WrenInterpretResult result = wrenInterpret(vm, module, script);
Line 933 ⟶ 982:
free(script);
return 0;
}</langsyntaxhighlight>
 
{{out}}
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