這周要讓手臂可以隨著鍵盤操作改變要在哪一個關節開始轉動還有隨著滑鼠操作改變轉動方向
#include <stdio.h>
#include <GL/glut.h>
float angle[20]={}, diff=2;關節變成20個,按下不同鍵可轉不同角度
int angleID=0;///現在有20個angle,angle[0],angle[1]...angle[angleID]
void timer(int t)///上週程式,會增加、會減少!!!
{
///glutTimerFunc( 30, timer, t+1 );///上週程式 設定新的timer
}
int oldX=0,oldY=0;
void mouse(int button,int state,int x,int y)
{
oldX=x;
oldY=y;
}
#include <stdio.h>
FILE*fout=NULL;
FILE*fin=NULL;
void motion(int x,int y)
{///mouse motion 時,會叫這個motion()
angle[angleID]+=x-oldX;
oldX=x;
glutPostRedisplay();
///邊motion邊存檔
if(fout==NULL)fout=fopen("angle.txt","w+");///step03 若null,fopen()
for(int i=0;i<20;i++)printf("%.2f",angle[i]);///step03 for迴圈印陣列
printf("\n");
for(int i=0;i<20;i++)fprintf(fout,"%.2f",angle[i]);
fprintf(fout,"\n");
}
void keyboard(unsigned char key,int x,int y)
{
if(key=='0')angleID=0;///之後timer()會改變關節angle[0]
if(key=='1')angleID=1;///之後timer()會改變關節angle[1]
if(key=='2')angleID=2;///之後timer()會改變關節angle[2]
if(key=='3')angleID=3;///之後timer()會改變關節angle[3]
if(key=='s'){///存檔
if(fout==NULL)fout=fopen("angle.txt","w+");///step03 若null,fopen()
for(int i=0;i<20;i++)printf("%.2f",angle[i]);///step03 for迴圈印陣列
printf("\n");
for(int i=0;i<20;i++)fprintf(fout,"%.2f",angle[i]);
fprintf(fout,"\n");
}
if(key=='r'){
if(fin==NULL)fin = fopen("angle.txt","r");
for(int i=0;i<20;i++)fscanf(fin,"%f",&angle[i]);
glutPostRedisplay();
}
}
void display()
{
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glPushMatrix();///Step05-2
glutSolidTeapot( 0.3 );///身體
glPushMatrix();///Step05-2
glTranslatef(-0.3,0,0);
glRotatef(angle[0], 0,0,1);
glTranslatef(-0.3,0,0);
glutSolidTeapot( 0.3 );///左手臂, 但是,要用 T-R-T移位置
glPushMatrix();
glTranslatef(-0.3, 0,0);
glRotatef(angle[1], 0,0,1);
glTranslatef(-0.3, 0,0);
glutSolidTeapot( 0.3 );///左手肘
glPopMatrix();
glPopMatrix();///Step05-2
glPushMatrix();///Step05-2
glTranslatef(+0.3,0,0);
glRotatef(-angle[2], 0,0,1);
glTranslatef(+0.3,0,0);
glutSolidTeapot( 0.3 );///右手臂
glPushMatrix();///step05-3
glTranslatef(+0.3,0,0);
glRotatef(-angle[3], 0,0,1);
glTranslatef(+0.3,0,0);
glutSolidTeapot( 0.3 );///右手肘
glPopMatrix();///Step05-3
glPopMatrix();///Step05-2
glPopMatrix();///Step05-2
glutSwapBuffers();
}
int main( int argc, char** argv )
{
glutInit( &argc, argv );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );
glutCreateWindow( "week16 many angles" );
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutKeyboardFunc(keyboard);
glutDisplayFunc( display );
glutTimerFunc( 0, timer, 0);
glutMainLoop();
}///先不放貼圖, 先不放打光



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