//build spline with a frustum and a fileName to spline point data
SplineTraveler::SplineTraveler(Frustum *frus, string fileName)
{
rotation = Vector3f(0,0,0);
nextPoint = 1;
curPoint = 0;
curU = 0;
timer = 0;
timeSinceKnot = 0;
elapseRate = 1;
initSpline(fileName);
frustum = frus;
areGhostPoints = false;
}
/* openGL init */
void myInit() {
t = clock();
/* Enable a single OpenGL light. */
initLighting();
initMaterials();
glEnable(GL_LIGHT0);
glEnable(GL_LIGHTING);
initGroundTexture();
initSkyTexture();
initRailTexture();
initSpline();
calculateNormalsAndBinormals();
/* create the display list */
theSpline = glGenLists(1);
glNewList(theSpline, GL_COMPILE);
/* create cross sections */
glBegin(GL_LINES);
for (int i = 0; i < normals.numControlPoints; i++) {
glVertex3f(rollercoasterSpline.points[i].x, rollercoasterSpline.points[i].y, rollercoasterSpline.points[i].z);
glVertex3f(rollercoasterSpline.points[i].x + normals.points[i].x / 2,
rollercoasterSpline.points[i].y + normals.points[i].y / 2,
rollercoasterSpline.points[i].z + normals.points[i].z / 2);
}
glEnd();
/* create support beams */
glBegin(GL_LINES);
for (int i = 0; i < normals.numControlPoints; i++) {
if (i % 20 == 0) {
glVertex3f(rollercoasterSpline.points[i].x, rollercoasterSpline.points[i].y, rollercoasterSpline.points[i].z);
glVertex3f(rollercoasterSpline.points[i].x, rollercoasterSpline.points[i].y, 0);
glVertex3f(rollercoasterSpline.points[i].x + normals.points[i].x / 2,
rollercoasterSpline.points[i].y + normals.points[i].y / 2,
rollercoasterSpline.points[i].z + normals.points[i].z / 2);
glVertex3f(rollercoasterSpline.points[i].x + normals.points[i].x / 2,
rollercoasterSpline.points[i].y + normals.points[i].y / 2,
0);
}
}
glEnd();
// modulate texture with lighting
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glBindTexture(GL_TEXTURE_2D, railTexture);
// turn on texture mapping
glEnable(GL_TEXTURE_2D);
/* compute the spline */
glBegin(GL_QUADS);
double alpha = 0.05;
for (int i = 0; i < rollercoasterSpline.numControlPoints; i++) {
double pointX = rollercoasterSpline.points[i].x;
double pointY = rollercoasterSpline.points[i].y;
double pointZ = rollercoasterSpline.points[i].z;
double normX = normals.points[i].x;
double normY = normals.points[i].y;
double normZ = normals.points[i].z;
double binX = binormals.points[i].x;
double binY = binormals.points[i].y;
double binZ = binormals.points[i].z;
double pointX2 = rollercoasterSpline.points[i + 1].x;
double pointY2 = rollercoasterSpline.points[i + 1].y;
double pointZ2 = rollercoasterSpline.points[i + 1].z;
double normX2 = normals.points[i + 1].x;
double normY2 = normals.points[i + 1].y;
double normZ2 = normals.points[i + 1].z;
double binX2 = binormals.points[i + 1].x;
double binY2 = binormals.points[i + 1].y;
double binZ2 = binormals.points[i + 1].z;
double v0X = pointX - alpha*(normX - binX);
double v0Y = pointY - alpha*(normY - binY);
double v0Z = pointZ - alpha*(normZ - binZ);
double v1X = pointX + alpha*(normX + binX);
double v1Y = pointY + alpha*(normY + binY);
double v1Z = pointZ + alpha*(normZ + binZ);
double v2X = pointX + alpha*(normX - binX);
double v2Y = pointY + alpha*(normY - binY);
double v2Z = pointZ + alpha*(normZ - binZ);
double v3X = pointX - alpha*(normX + binX);
double v3Y = pointY - alpha*(normY + binY);
double v3Z = pointZ - alpha*(normZ + binZ);
double v4X = pointX2 - alpha*(normX2 - binX2);
double v4Y = pointY2 - alpha*(normY2 - binY2);
double v4Z = pointZ2 - alpha*(normZ2 - binZ2);
double v5X = pointX2 + alpha*(normX2 + binX2);
double v5Y = pointY2 + alpha*(normY2 + binY2);
double v5Z = pointZ2 + alpha*(normZ2 + binZ2);
double v6X = pointX2 + alpha*(normX2 - binX2);
double v6Y = pointY2 + alpha*(normY2 - binY2);
double v6Z = pointZ2 + alpha*(normZ2 - binZ2);
double v7X = pointX2 - alpha*(normX2 + binX2);
double v7Y = pointY2 - alpha*(normY2 + binY2);
double v7Z = pointZ2 - alpha*(normZ2 + binZ2);
// // // RAIL TWO // // //
double v0X2 = pointX - alpha*(-8 * normX - binX);
double v0Y2 = pointY - alpha*(-8 * normY - binY);
double v0Z2 = pointZ - alpha*(-8 * normZ - binZ);
double v1X2 = pointX + alpha*(10 * normX + binX);
double v1Y2 = pointY + alpha*(10 * normY + binY);
double v1Z2 = pointZ + alpha*(10 * normZ + binZ);
double v2X2 = pointX + alpha*(10 * normX - binX);
double v2Y2 = pointY + alpha*(10 * normY - binY);
double v2Z2 = pointZ + alpha*(10 * normZ - binZ);
double v3X2 = pointX - alpha*(-8 * normX + binX);
double v3Y2 = pointY - alpha*(-8 * normY + binY);
double v3Z2 = pointZ - alpha*(-8 * normZ + binZ);
double v4X2 = pointX2 - alpha*(-8 * normX2 - binX2);
double v4Y2 = pointY2 - alpha*(-8 * normY2 - binY2);
double v4Z2 = pointZ2 - alpha*(-8 * normZ2 - binZ2);
double v5X2 = pointX2 + alpha*(10 * normX2 + binX2);
double v5Y2 = pointY2 + alpha*(10 * normY2 + binY2);
double v5Z2 = pointZ2 + alpha*(10 * normZ2 + binZ2);
double v6X2 = pointX2 + alpha*(10 * normX2 - binX2);
double v6Y2 = pointY2 + alpha*(10 * normY2 - binY2);
double v6Z2 = pointZ2 + alpha*(10 * normZ2 - binZ2);
double v7X2 = pointX2 - alpha*(-8 * normX2 + binX2);
double v7Y2 = pointY2 - alpha*(-8 * normY2 + binY2);
double v7Z2 = pointZ2 - alpha*(-8 * normZ2 + binZ2);
// // // // // // // // //
glNormal3f(-normals.points[i].x, -normals.points[i].y, -normals.points[i].z);
// right side face
glTexCoord2f(1.0, 0.0);
glVertex3f(v0X, v0Y, v0Z);
glTexCoord2f(0.0, 0.0);
glVertex3f(v1X, v1Y, v1Z);
glTexCoord2f(0.0, 1.0);
glVertex3f(v5X, v5Y, v5Z);
glTexCoord2f(1.0, 1.0);
glVertex3f(v4X, v4Y, v4Z);
glNormal3f(-binormals.points[i].x, -binormals.points[i].y, -binormals.points[i].z);
// top face
glTexCoord2f(1.0, 0.0);
glVertex3f(v1X, v1Y, v1Z);
glTexCoord2f(0.0, 0.0);
glVertex3f(v2X, v2Y, v2Z);
glTexCoord2f(0.0, 1.0);
glVertex3f(v6X, v6Y, v6Z);
glTexCoord2f(1.0, 1.0);
glVertex3f(v5X, v5Y, v5Z);
glNormal3f(normals.points[i].x, normals.points[i].y, normals.points[i].z);
// left side face
glTexCoord2f(1.0, 0.0);
glVertex3f(v2X, v2Y, v2Z);
glTexCoord2f(0.0, 0.0);
glVertex3f(v3X, v3Y, v3Z);
glTexCoord2f(0.0, 1.0);
glVertex3f(v7X, v7Y, v7Z);
glTexCoord2f(1.0, 1.0);
glVertex3f(v6X, v6Y, v6Z);
glNormal3f(binormals.points[i].x, binormals.points[i].y, binormals.points[i].z);
// bottom face
glTexCoord2f(1.0, 0.0);
glVertex3f(v0X, v0Y, v0Z);
glTexCoord2f(0.0, 0.0);
glVertex3f(v3X, v3Y, v3Z);
glTexCoord2f(0.0, 1.0);
glVertex3f(v7X, v7Y, v7Z);
glTexCoord2f(1.0, 1.0);
glVertex3f(v4X, v4Y, v4Z);
// // // RAIL TWO // // //
// // // // // // // // //
glNormal3f(-normals.points[i].x, -normals.points[i].y, -normals.points[i].z);
// right side face
glTexCoord2f(1.0, 0.0);
glVertex3f(v0X2, v0Y2, v0Z2);
glTexCoord2f(0.0, 0.0);
glVertex3f(v1X2, v1Y2, v1Z2);
glTexCoord2f(0.0, 1.0);
glVertex3f(v5X2, v5Y2, v5Z2);
glTexCoord2f(1.0, 1.0);
glVertex3f(v4X2, v4Y2, v4Z2);
glNormal3f(-binormals.points[i].x, -binormals.points[i].y, -binormals.points[i].z);
// top face
glTexCoord2f(1.0, 0.0);
glVertex3f(v1X2, v1Y2, v1Z2);
glTexCoord2f(0.0, 0.0);
glVertex3f(v2X2, v2Y2, v2Z2);
glTexCoord2f(0.0, 1.0);
glVertex3f(v6X2, v6Y2, v6Z2);
glTexCoord2f(1.0, 1.0);
glVertex3f(v5X2, v5Y2, v5Z2);
glNormal3f(normals.points[i].x, normals.points[i].y, normals.points[i].z);
// left side face
glTexCoord2f(1.0, 0.0);
glVertex3f(v2X2, v2Y2, v2Z2);
glTexCoord2f(0.0, 0.0);
glVertex3f(v3X2, v3Y2, v3Z2);
glTexCoord2f(0.0, 1.0);
glVertex3f(v7X2, v7Y2, v7Z2);
glTexCoord2f(1.0, 1.0);
glVertex3f(v6X2, v6Y2, v6Z2);
glNormal3f(binormals.points[i].x, binormals.points[i].y, binormals.points[i].z);
// bottom face
glTexCoord2f(1.0, 0.0);
glVertex3f(v0X2, v0Y2, v0Z2);
glTexCoord2f(0.0, 0.0);
glVertex3f(v3X2, v3Y2, v3Z2);
glTexCoord2f(0.0, 1.0);
glVertex3f(v7X2, v7Y2, v7Z2);
glTexCoord2f(1.0, 1.0);
glVertex3f(v4X2, v4Y2, v4Z2);
}
glDisable(GL_TEXTURE_2D);
glEnd();
glEndList();
/* setup gl view here */
glClearColor(0.0, 0.0, 0.0, 0.0);
}