void ofxEnveloper::drawInterpolation()
{
drawInterpolatorSmooth(mInterpolator, mNumSteps, 20, 2) ;
}
//--------------------------------------------------------------
void testApp::draw() {
glPushMatrix();
glTranslatef(ofGetWidth()/2, 0, 0); // move to center of screen horizontally (so we can rotate)
if(rotateView) {
currentRot += 0.2;
glRotatef(currentRot, 0, 1, 0); // rotate view
} else {
currentRot = 0;
}
int numSteps = floor(mouseX / (float)ofGetWidth() * 1000);
if(numSteps<10) numSteps = 10;
float spacing = 1.0/numSteps;
// draw spline2D
glColor3f(1, 1, 1);
drawInterpolatorRaw(spline2D);
// draw interpolated spline2D
glColor3f(0, 0, 1);
drawInterpolatorSmooth(spline2D, numSteps);
// draw raw spline3D
glColor3f(1, 1, 1);
drawInterpolatorRaw(spline3D);
// draw interpolated spline3D
glColor3f(0.2f, 0.2f, 0.2f);
drawInterpolatorSmooth(spline3D, numSteps);
// draw sphere moving along 3D path
MSA::Vec3f spherePos = spline3D.sampleAt(spherePosPerc);
glPushMatrix();
glColor3f(1, 1, 0);
glTranslatef(spherePos.x, spherePos.y, spherePos.z);
glutSolidSphere(20, 5, 5);
glPopMatrix();
// move sphere
// if it reaches the edges, bounce back
spherePosPerc += sphereSpeed;
if(spherePosPerc > 1) {
spherePosPerc = 1;
sphereSpeed *= -1;
} else if(spherePosPerc < 0) {
spherePosPerc = 0;
sphereSpeed *= -1;
}
glPopMatrix();
ofSetColor(0);
string uiLin = interpolationType == MSA::kInterpolationLinear ? "* " : " ";
string uiCub = interpolationType == MSA::kInterpolationCubic ? "* " : " ";
string uiDist = spline3D.getUseLength() ? "* " : " ";
ofDrawBitmapString( ofToString(ofGetFrameRate(), 2) + "\n"
+ "numSteps (resampling resolution - mouseX to change): " + ofToString(numSteps) + "\n"
+ "mouse click around the area to draw a 3D spline (length = " + ofToString(spline3D.getLength()) + "\n"
+ "\n"
+ uiLin + "'1' to use linear interpolation\n"
+ uiCub + "'2' to use cubic (catmull rom) interpolation\n"
+ "\n"
+ uiDist + "'d' to toggle 'using Length in interpolation'\n"
+ "\n"
+ "'c' to clear 3D spline\n"
, 20, 20);
}