void helix::drawCenteredForDOF( ofShader & dofShader, bool bDrawInner, bool bDrawOuter ){
GLint sideLocation = dofShader.getAttributeLocation("side");
GLint nextLocation = dofShader.getAttributeLocation("next");
ofPoint midPt;
int count = 0;
for (int i = 0; i < helix0.size(); i++){
midPt += helix0[i];
count++;
}
for (int i = 0; i < helix1.size(); i++){
midPt += helix1[i];
count++;
}
for (int i = 0; i < lines.size(); i++){
midPt += lines[i].a;
midPt += lines[i].b;
count += 2;
}
midPt /= (float)count;
ofPushMatrix();
ofTranslate(-midPt.x, -midPt.y, -midPt.z);
if (bDrawOuter){
glBegin(GL_TRIANGLE_STRIP);
for (int i = 0; i < helix0.size()-1; i++){
ofPoint cur = helix0[i];
ofPoint next = helix0[i+1];
ofPoint temp0 = cur;
ofPoint temp1 = next;
temp0.normalize();
temp1.normalize();
ofPoint normal = temp0.cross(temp1).normalize();
dofShader.setAttribute1f(sideLocation, -.5);
dofShader.setAttribute3f(nextLocation, next.x, next.y, next.z);
//glNormal3f(normal.x, normal.y, normal.y);
glVertex3f(cur.x, cur.y, cur.z);
dofShader.setAttribute1f(sideLocation, +.5);
dofShader.setAttribute3f(nextLocation, next.x, next.y, next.z);
//glNormal3f(normal.x, normal.y, normal.y);
glVertex3f(cur.x, cur.y, cur.z);
}
glEnd();
glBegin(GL_TRIANGLE_STRIP);
for (int i = 0; i < helix1.size()-1; i++){
ofPoint cur = helix1[i];
ofPoint next = helix1[i+1];
ofPoint temp0 = cur;
ofPoint temp1 = next;
temp0.normalize();
temp1.normalize();
ofPoint normal = temp0.cross(temp1).normalize();
dofShader.setAttribute1f(sideLocation, -.5);
dofShader.setAttribute3f(nextLocation, next.x, next.y, next.z);
//glNormal3f(normal.x, normal.y, normal.y);
glVertex3f(cur.x, cur.y, cur.z);
dofShader.setAttribute1f(sideLocation, +.5);
dofShader.setAttribute3f(nextLocation, next.x, next.y, next.z);
//glNormal3f(normal.x, normal.y, normal.y);
glVertex3f(cur.x, cur.y, cur.z);
}
glEnd();
}
if (bDrawInner)
for (int i = 0; i < lines.size(); i++){
int divisions = 20;
glBegin(GL_TRIANGLE_STRIP);
for (int j = 0; j < 20; j++){
ofPoint cur = lines[i].a + ((lines[i].b - lines[i].a)/(float)19) * j;
ofPoint next = lines[i].a + ((lines[i].b - lines[i].a)/(float)19) * (j+1);
dofShader.setAttribute1f(sideLocation, -.5);
dofShader.setAttribute3f(nextLocation, next.x, next.y, next.z);
glVertex3f(cur.x, cur.y, cur.z);
glTexCoord2d( ofRandom(0,50), ofRandom(0,50));
dofShader.setAttribute1f(sideLocation, +.5);
dofShader.setAttribute3f(nextLocation, next.x, next.y, next.z);
glVertex3f(cur.x, cur.y, cur.z);
glTexCoord2d(ofRandom(0,50), ofRandom(0,50));
}
glEnd();
}
ofPopMatrix();
}
