「指定座標で円運動」の編集履歴（バックアップ）一覧はこちら
「指定座標で円運動」(2015/01/12 (月) 10:43:25) の最新版変更点
追加された行は緑色になります。
削除された行は赤色になります。
<p><strong>指定の座標で回転させます。</strong></p>
<p><img alt="" src="http://cdn21.atwikiimg.com/opengl?cmd=upload&act=open&pageid=114&file=rotate.png" /></p>
<table border="1" cellpadding="1" cellspacing="1" width="600"><tbody><tr><td>
<p>#pragma comment(linker, "/SUBSYSTEM:WINDOWS /ENTRY:mainCRTStartup")<br />
#include <GL/freeglut/freeglut.h></p>
<p>#define WIDTH 320<br />
#define HEIGHT 240</p>
<p>//回転用<br />
float angle = 0.0f;<br />
//白<br />
GLfloat white[] = { 1.0, 1.0, 1.0, 1.0 };<br />
//黄色<br />
GLfloat yellow[] = { 1.0, 1.0, 0.0, 1.0};<br />
float Radius=80.0f;<br />
float posX=120.0f;<br />
float posY=0.0f;<br />
float posZ=80.0f;</p>
<p>void Line3D(float x1,float y1,float z1,float x2,float y2,float z2){<br />
//線幅<br />
glLineWidth(1.0);<br />
//線<br />
glBegin(GL_LINES);<br />
glVertex3f(x1,y1,z1);<br />
glVertex3f(x2,y2,z2);<br />
glEnd();<br />
}</p>
<p>void DrawMeasure(int measure,float size){<br />
glDisable(GL_LIGHTING);<br />
glColor4f(0.5f, 0.5f, 0.5f, 0.5f);<br />
for(int
x=0;x<=measure;x++){Line3D(x*size-(size*measure/2),0,-(size*measure/2),x*size-(size*measure/2),0,measure*size-(size*measure/2));}<br />
for(int
y=0;y<=measure;y++){Line3D(-(size*measure/2),0,y*size-(size*measure/2),measure*size-(size*measure/2),0,y*size-(size*measure/2));}<br />
glDisable(GL_DEPTH_TEST);<br />
glColor4f(1.0f, 0.0f, 0.0f, 1.0f);<br />
Line3D(0,0,0,(measure/2+2)*size,0,0);<br />
glColor4f(0.0f, 1.0f, 0.0f, 1.0f);<br />
Line3D(0,0,0,0,(measure/2+2)*size,0);<br />
glColor4f(0.0f, 0.0f, 1.0f, 1.0f);<br />
Line3D(0,0,0,0,0,(measure/2+2)*size);<br />
glEnable(GL_LIGHTING);<br />
glEnable(GL_DEPTH_TEST);<br />
}</p>
<p>void display(void)<br />
{<br />
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);<br />
glViewport(0, 0, WIDTH, HEIGHT);<br />
glMatrixMode(GL_PROJECTION);<br />
glLoadIdentity();</p>
<p> gluPerspective(30.0, (double)WIDTH / (double)HEIGHT, 1.0, 5000.0);<br />
glMatrixMode(GL_MODELVIEW);<br />
glLoadIdentity();</p>
<p> gluLookAt(300.0,800.0,800.0,<br />
0.0,0.0,0.0,<br />
0.0,1.0,0.0);</p>
<p> glColor3f(1,1,1);<br />
DrawMeasure(16,40);</p>
<p> //回転基準の目印<br />
glMaterialfv(GL_FRONT, GL_DIFFUSE, yellow);<br />
glTranslatef(posX,50.0f,posZ);<br />
glRotatef(90.0f,1.0f,0.0f,0.0f);<br />
glRotatef(angle,0.0f,0.0f,1.0f);<br />
glutSolidCone(10.0f, 50.0f,4,3);</p>
<p> //円運動<br />
glLoadIdentity();<br />
gluLookAt(300.0,800.0,800.0,<br />
0.0,0.0,0.0,<br />
0.0,1.0,0.0);<br />
//回転基準位置に移動<br />
glTranslatef(posX,posY,posZ);<br />
glRotatef(angle,0.0f,1.0f,0.0f);//Y軸を回転<br />
//回転半径を足す<br />
glTranslatef(Radius,0.0f,0.0f);<br />
glMaterialfv(GL_FRONT, GL_DIFFUSE, white);<br />
glutSolidSphere(10.0,16,16);</p>
<p> glutSwapBuffers();<br />
}<br />
void idle(void)<br />
{<br />
angle+=2.0f;<br />
Sleep(1);<br />
glutPostRedisplay();<br />
}<br />
void Init(){<br />
glClearColor(0.3f, 0.3f, 0.3f, 1.0f);<br />
glEnable(GL_DEPTH_TEST);<br />
glEnable(GL_LIGHTING);<br />
glEnable(GL_LIGHT0);<br />
}<br />
int main(int argc, char *argv[])<br />
{<br />
glutInitWindowPosition(100, 100);<br />
glutInitWindowSize(WIDTH, HEIGHT);<br />
glutInit(&argc, argv);<br />
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);<br />
glutCreateWindow("指定座標で円運動");<br />
glutDisplayFunc(display);<br />
glutIdleFunc(idle);<br />
Init();<br />
glutMainLoop();<br />
return 0;<br />
}</p>
</td>
</tr></tbody></table><p> </p>
<p><strong>指定の座標で回転させます。</strong></p>
<p><img alt="" src="http://cdn21.atwikiimg.com/opengl?cmd=upload&act=open&pageid=114&file=rotate.png" /></p>
<table border="1" cellpadding="1" cellspacing="1" style="width:100px;"><tbody><tr><td>ファイル</td>
</tr><tr><td><a href="http://www21.atwiki.jp/opengl?cmd=upload&act=open&pageid=114&file=main.cpp">
main.cpp</a></td>
</tr></tbody></table><p>main.cpp</p>
<table border="1" cellpadding="1" cellspacing="1" width="600"><tbody><tr><td>
<p style="margin:1em 0px;color:rgb(42,42,42);font-family:arial, helvetica, '繝偵Λ繧ｮ繝手ｧ偵ざ Pro W3', 'Hiragino Kaku Gothic Pro', Osaka, '繝｡繧､繝ｪ繧ｪ', Meiryo, 'MS P繧ｴ繧ｷ繝�け', clean, sans-serif;font-size:12px;line-height:19.4559993743897px;">
#pragma comment(linker, "/SUBSYSTEM:WINDOWS /ENTRY:mainCRTStartup")<br />
#include <GL/freeglut/freeglut.h></p>
<p style="margin:1em 0px;color:rgb(42,42,42);font-family:arial, helvetica, '繝偵Λ繧ｮ繝手ｧ偵ざ Pro W3', 'Hiragino Kaku Gothic Pro', Osaka, '繝｡繧､繝ｪ繧ｪ', Meiryo, 'MS P繧ｴ繧ｷ繝�け', clean, sans-serif;font-size:12px;line-height:19.4559993743897px;">
#define WIDTH 320<br />
#define HEIGHT 240</p>
<p style="margin:1em 0px;color:rgb(42,42,42);font-family:arial, helvetica, '繝偵Λ繧ｮ繝手ｧ偵ざ Pro W3', 'Hiragino Kaku Gothic Pro', Osaka, '繝｡繧､繝ｪ繧ｪ', Meiryo, 'MS P繧ｴ繧ｷ繝�け', clean, sans-serif;font-size:12px;line-height:19.4559993743897px;">
//回転用<br />
float angle = 0.0f;<br />
//白<br />
GLfloat white[] = { 1.0, 1.0, 1.0, 1.0 };<br />
//黄色<br />
GLfloat yellow[] = { 1.0, 1.0, 0.0, 1.0};<br />
float Radius=80.0f;<br />
float posX=120.0f;<br />
float posY=0.0f;<br />
float posZ=80.0f;</p>
<p style="margin:1em 0px;color:rgb(42,42,42);font-family:arial, helvetica, '繝偵Λ繧ｮ繝手ｧ偵ざ Pro W3', 'Hiragino Kaku Gothic Pro', Osaka, '繝｡繧､繝ｪ繧ｪ', Meiryo, 'MS P繧ｴ繧ｷ繝�け', clean, sans-serif;font-size:12px;line-height:19.4559993743897px;">
void Line3D(float x1,float y1,float z1,float x2,float y2,float z2){<br />
//線幅<br />
glLineWidth(1.0);<br />
//線<br />
glBegin(GL_LINES);<br />
glVertex3f(x1,y1,z1);<br />
glVertex3f(x2,y2,z2);<br />
glEnd();<br />
}</p>
<p style="margin:1em 0px;color:rgb(42,42,42);font-family:arial, helvetica, '繝偵Λ繧ｮ繝手ｧ偵ざ Pro W3', 'Hiragino Kaku Gothic Pro', Osaka, '繝｡繧､繝ｪ繧ｪ', Meiryo, 'MS P繧ｴ繧ｷ繝�け', clean, sans-serif;font-size:12px;line-height:19.4559993743897px;">
void DrawMeasure(int measure,float size){<br />
glDisable(GL_LIGHTING);<br />
glColor4f(0.5f, 0.5f, 0.5f, 0.5f);<br />
for(int
x=0;x<=measure;x++){Line3D(x*size-(size*measure/2),0,-(size*measure/2),x*size-(size*measure/2),0,measure*size-(size*measure/2));}<br />
for(int
y=0;y<=measure;y++){Line3D(-(size*measure/2),0,y*size-(size*measure/2),measure*size-(size*measure/2),0,y*size-(size*measure/2));}<br />
glDisable(GL_DEPTH_TEST);<br />
glColor4f(1.0f, 0.0f, 0.0f, 1.0f);<br />
Line3D(0,0,0,(measure/2+2)*size,0,0);<br />
glColor4f(0.0f, 1.0f, 0.0f, 1.0f);<br />
Line3D(0,0,0,0,(measure/2+2)*size,0);<br />
glColor4f(0.0f, 0.0f, 1.0f, 1.0f);<br />
Line3D(0,0,0,0,0,(measure/2+2)*size);<br />
glEnable(GL_LIGHTING);<br />
glEnable(GL_DEPTH_TEST);<br />
}</p>
<p style="margin:1em 0px;color:rgb(42,42,42);font-family:arial, helvetica, '繝偵Λ繧ｮ繝手ｧ偵ざ Pro W3', 'Hiragino Kaku Gothic Pro', Osaka, '繝｡繧､繝ｪ繧ｪ', Meiryo, 'MS P繧ｴ繧ｷ繝�け', clean, sans-serif;font-size:12px;line-height:19.4559993743897px;">
void display(void)<br />
{<br />
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);<br />
glViewport(0, 0, WIDTH, HEIGHT);<br />
glMatrixMode(GL_PROJECTION);<br />
glLoadIdentity();</p>
<p style="margin:1em 0px;color:rgb(42,42,42);font-family:arial, helvetica, '繝偵Λ繧ｮ繝手ｧ偵ざ Pro W3', 'Hiragino Kaku Gothic Pro', Osaka, '繝｡繧､繝ｪ繧ｪ', Meiryo, 'MS P繧ｴ繧ｷ繝�け', clean, sans-serif;font-size:12px;line-height:19.4559993743897px;">
gluPerspective(30.0, (double)WIDTH / (double)HEIGHT, 1.0, 5000.0);<br />
glMatrixMode(GL_MODELVIEW);<br />
glLoadIdentity();</p>
<p style="margin:1em 0px;color:rgb(42,42,42);font-family:arial, helvetica, '繝偵Λ繧ｮ繝手ｧ偵ざ Pro W3', 'Hiragino Kaku Gothic Pro', Osaka, '繝｡繧､繝ｪ繧ｪ', Meiryo, 'MS P繧ｴ繧ｷ繝�け', clean, sans-serif;font-size:12px;line-height:19.4559993743897px;">
gluLookAt(300.0,800.0,800.0,<br />
0.0,0.0,0.0,<br />
0.0,1.0,0.0);</p>
<p style="margin:1em 0px;color:rgb(42,42,42);font-family:arial, helvetica, '繝偵Λ繧ｮ繝手ｧ偵ざ Pro W3', 'Hiragino Kaku Gothic Pro', Osaka, '繝｡繧､繝ｪ繧ｪ', Meiryo, 'MS P繧ｴ繧ｷ繝�け', clean, sans-serif;font-size:12px;line-height:19.4559993743897px;">
glColor3f(1,1,1);<br />
DrawMeasure(16,40);</p>
<p style="margin:1em 0px;color:rgb(42,42,42);font-family:arial, helvetica, '繝偵Λ繧ｮ繝手ｧ偵ざ Pro W3', 'Hiragino Kaku Gothic Pro', Osaka, '繝｡繧､繝ｪ繧ｪ', Meiryo, 'MS P繧ｴ繧ｷ繝�け', clean, sans-serif;font-size:12px;line-height:19.4559993743897px;">
//回転基準の目印<br />
glMaterialfv(GL_FRONT, GL_DIFFUSE, yellow);<br />
glTranslatef(posX,50.0f,posZ);<br />
glRotatef(90.0f,1.0f,0.0f,0.0f);<br />
glRotatef(angle,0.0f,0.0f,1.0f);<br />
glutSolidCone(10.0f, 50.0f,4,3);</p>
<p style="margin:1em 0px;color:rgb(42,42,42);font-family:arial, helvetica, '繝偵Λ繧ｮ繝手ｧ偵ざ Pro W3', 'Hiragino Kaku Gothic Pro', Osaka, '繝｡繧､繝ｪ繧ｪ', Meiryo, 'MS P繧ｴ繧ｷ繝�け', clean, sans-serif;font-size:12px;line-height:19.4559993743897px;">
//円運動<br />
glLoadIdentity();<br />
gluLookAt(300.0,800.0,800.0,<br />
0.0,0.0,0.0,<br />
0.0,1.0,0.0);<br />
//回転基準位置に移動<br />
glTranslatef(posX,posY,posZ);<br />
glRotatef(angle,0.0f,1.0f,0.0f);//Y軸を回転<br />
//回転半径を足す<br />
glTranslatef(Radius,0.0f,0.0f);<br />
glMaterialfv(GL_FRONT, GL_DIFFUSE, white);<br />
glutSolidSphere(10.0,16,16);</p>
<p style="margin:1em 0px;color:rgb(42,42,42);font-family:arial, helvetica, '繝偵Λ繧ｮ繝手ｧ偵ざ Pro W3', 'Hiragino Kaku Gothic Pro', Osaka, '繝｡繧､繝ｪ繧ｪ', Meiryo, 'MS P繧ｴ繧ｷ繝�け', clean, sans-serif;font-size:12px;line-height:19.4559993743897px;">
glutSwapBuffers();<br />
}<br />
void idle(void)<br />
{<br />
angle+=2.0f;<br />
Sleep(1);<br />
glutPostRedisplay();<br />
}<br />
void Init(){<br />
glClearColor(0.3f, 0.3f, 0.3f, 1.0f);<br />
glEnable(GL_DEPTH_TEST);<br />
glEnable(GL_LIGHTING);<br />
glEnable(GL_LIGHT0);<br />
}<br />
int main(int argc, char *argv[])<br />
{<br />
glutInitWindowPosition(100, 100);<br />
glutInitWindowSize(WIDTH, HEIGHT);<br />
glutInit(&argc, argv);<br />
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);<br />
glutCreateWindow("指定座標で円運動");<br />
glutDisplayFunc(display);<br />
glutIdleFunc(idle);<br />
Init();<br />
glutMainLoop();<br />
return 0;<br />
}</p>
</td>
</tr></tbody></table><p> </p>
