public void setNormals() {
// first get normals for all faces
int numFaces = F.size();
for (Face f : F) {
Edge e = E.get(f.e);
Vec3 v1 = V.get(e.v).coord;
e = E.get(e.next);
Vec3 v2 = V.get(e.v).coord;
e = E.get(e.next);
Vec3 v3 = V.get(e.v).coord;
// set the normal for this face
Vec3 U = Vec3.sub(v2, v1);
Vec3 V = Vec3.sub(v3, v1);
float nx = U.y * V.z - U.z * V.y;
float ny = U.z * V.x - U.x * V.z;
float nz = U.x * V.y - U.y * V.x;
f.norm = new Vec3(nx, ny, nz);
f.norm.normalize();
}
// next set normals for all vertices
for (Vert v : V) {
Vector<Vec3> norms = new Vector<Vec3>();
Edge e = E.get(v.e);
Edge eNext = e; // E.get(E.get(e.sym).next);
do {
// get eNext's Face's norm and store it for combining later
norms.add(F.get(eNext.f).norm);
eNext = E.get(E.get(eNext.sym).next);
} while (e.i != eNext.i);
// combine scaled norms here and set v.norm
float scale = 1.0f / norms.size();
Vec3 vNorm = new Vec3(0, 0, 0);
for (int i = 0; i < norms.size(); i++)
vNorm = Vec3.add(vNorm, norms.get(i)); // .scale(scale));
v.norm = vNorm;
v.norm.normalize();
}
}
public void update(int anim, int time) {
float dt = (float) viewer.getDelta() * 0.001F;
float grav = AnimatedFloat.getValue(gravity, anim, time);
float deaccel = AnimatedFloat.getValue(gravity2, anim, time);
if (emitterType == 1 || emitterType == 2) {
float rate = AnimatedFloat.getValue(emissionRate, anim, time);
float life = AnimatedFloat.getValue(lifespan, anim, time);
float toSpawn = 0.0F;
if (life != 0.0F) toSpawn = (dt * rate) / life + spawnRemainder;
else toSpawn = spawnRemainder;
if (toSpawn < 1.0F) {
spawnRemainder = toSpawn;
if (spawnRemainder < 0.0F) spawnRemainder = 0.0F;
} else {
int spawnCount = (int) toSpawn;
if (spawnCount + particles.size() > 1000) spawnCount = 1000 - particles.size();
spawnRemainder = toSpawn - (float) spawnCount;
float w = AnimatedFloat.getValue(areaWidth, anim, time) * 0.5F;
float l = AnimatedFloat.getValue(areaLength, anim, time) * 0.5F;
float speed = AnimatedFloat.getValue(emissionSpeed, anim, time);
float var = AnimatedFloat.getValue(speedVariation, anim, time);
float spread = AnimatedFloat.getValue(verticalRange, anim, time);
float spread2 = AnimatedFloat.getValue(horizontalRange, anim, time);
boolean en = true;
int thisAnim = anim;
if (thisAnim >= enabled.length) thisAnim = 0;
if (enabled.length > 0 && enabled[thisAnim].used)
en = enabled[thisAnim].getValue(time) != 0;
if (en) {
for (int i = 0; i < spawnCount; i++) {
Particle p;
if (emitterType == 1)
p = PlaneEmitter.newParticle(this, anim, time, w, l, speed, var, spread, spread2);
else p = SphereEmitter.newParticle(this, anim, time, w, l, speed, var, spread, spread2);
particles.add(p);
}
}
}
}
float speed = 1.0F;
Vec3 t1 = new Vec3();
Vec3 t2 = new Vec3();
Vec3 t3 = new Vec3();
Point4f d = new Point4f();
Point4f c[] = new Point4f[3];
for (int i = 0; i < 3; i++) c[i] = new Point4f();
for (int i = 0; i < particles.size(); ) {
Particle p = (Particle) particles.get(i);
p.speed.add(
Vec3.sub(Vec3.scale(p.down, grav * dt, t1), Vec3.scale(p.dir, deaccel * dt, t2), t3));
if (slowdown > 0.0F) speed = (float) Math.exp(-1F * slowdown * p.life);
p.pos.add(Vec3.scale(p.speed, speed * dt, t1));
p.life += dt;
float lifePos = p.life / p.maxLife;
float s1 = size.data[0].x;
float s2 = 0.0F;
float s3 = 0.0F;
if (size.data.length > 1) s2 = size.data[1].x;
else s2 = s1;
if (size.data.length > 2) s3 = size.data[2].x;
else s3 = s2;
p.size = lifeInterp(lifePos, 0.5F, s1 * scale.x, s2 * scale.y, s3 * scale.z);
int limit = Math.min(3, color.data.length);
for (int j = 0; j < limit; j++) {
Point3f t = color.data[j];
c[j].set(t.x / 255F, t.y / 255F, t.z / 255F, (float) transparency.data[j] / 32767F);
}
if (limit < 3) {
Point3f t = color.data[limit - 1];
for (int j = limit - 1; j < 3; j++)
c[j].set(t.x / 255F, t.y / 255F, t.z / 255F, (float) transparency.data[j] / 32767F);
}
lifeInterp(lifePos, 0.5F, c[0], c[1], c[2], d);
p.color.set(d);
if (lifePos >= 1.0F) particles.remove(i);
else i++;
}
}
public void draw(GL2 gl) {
if (particles.size() == 0) return;
switch (blendMode) {
case 0: // '\0'
gl.glDisable(3042);
gl.glDisable(3008);
break;
case 1: // '\001'
gl.glEnable(3042);
gl.glDisable(3008);
gl.glBlendFunc(768, 1);
break;
case 2: // '\002'
gl.glEnable(3042);
gl.glDisable(3008);
gl.glBlendFunc(770, 1);
break;
case 3: // '\003'
gl.glDisable(3042);
gl.glEnable(3008);
break;
case 4: // '\004'
gl.glEnable(3042);
gl.glDisable(3008);
gl.glBlendFunc(770, 1);
break;
}
gl.glBindTexture(3553, model.mMaterials[texture].mTextureId);
gl.glPushMatrix();
if (particleType == 0 || particleType == 2) {
if ((flags & 0x1000) == 0) {
Vec3 view = new Vec3(viewer.getCamera().getPosition());
view.normalize();
Vec3 right = Vec3.cross(view, new Vec3(0.0F, 0.0F, 1.0F)).normalize();
Vec3 up = Vec3.cross(right, view).normalize();
int tcStart = 0;
if (flags == 0x40019) tcStart++;
gl.glBegin(7);
int count = particles.size();
Vec3 pos = new Vec3();
Vec3 cPos = new Vec3();
Vec3 ofs = new Vec3();
for (int i = 0; i < count; i++) {
Particle p = (Particle) particles.get(i);
if (p.tile < texCoords.size()) {
gl.glColor4f(p.color.x, p.color.y, p.color.z, p.color.w);
Point2f tc[] = (Point2f[]) texCoords.get(p.tile);
Vec3.add(right, up, ofs);
cPos.set(p.pos);
Vec3.sub(cPos, ofs.scale(p.size), pos);
gl.glTexCoord2f(tc[tcStart % 4].x, tc[tcStart % 4].y);
gl.glVertex3f(pos.x, pos.y, pos.z);
Vec3.sub(right, up, ofs);
Vec3.add(cPos, ofs.scale(p.size), pos);
gl.glTexCoord2f(tc[(tcStart + 1) % 4].x, tc[(tcStart + 1) % 4].y);
gl.glVertex3f(pos.x, pos.y, pos.z);
Vec3.add(right, up, ofs);
Vec3.add(cPos, ofs.scale(p.size), pos);
gl.glTexCoord2f(tc[(tcStart + 2) % 4].x, tc[(tcStart + 2) % 4].y);
gl.glVertex3f(pos.x, pos.y, pos.z);
Vec3.sub(right, up, ofs);
Vec3.sub(cPos, ofs.scale(p.size), pos);
gl.glTexCoord2f(tc[(tcStart + 3) % 4].x, tc[(tcStart + 3) % 4].y);
gl.glVertex3f(pos.x, pos.y, pos.z);
}
}
gl.glEnd();
} else {
gl.glBegin(7);
int count = particles.size();
Vec3 pos = new Vec3();
Vec3 ofs = new Vec3();
for (int i = 0; i < count; i++) {
Particle p = (Particle) particles.get(i);
if (p.tile < texCoords.size()) {
gl.glColor4f(p.color.x, p.color.y, p.color.z, p.color.w);
Point2f tc[] = (Point2f[]) texCoords.get(p.tile);
Vec3.add(p.pos, Vec3.scale(p.corners[0], p.size, ofs), pos);
gl.glTexCoord2f(tc[0].x, tc[0].y);
gl.glVertex3f(pos.x, pos.y, pos.z);
Vec3.add(p.pos, Vec3.scale(p.corners[1], p.size, ofs), pos);
gl.glTexCoord2f(tc[1].x, tc[1].y);
gl.glVertex3f(pos.x, pos.y, pos.z);
Vec3.add(p.pos, Vec3.scale(p.corners[2], p.size, ofs), pos);
gl.glTexCoord2f(tc[2].x, tc[2].y);
gl.glVertex3f(pos.x, pos.y, pos.z);
Vec3.add(p.pos, Vec3.scale(p.corners[3], p.size, ofs), pos);
gl.glTexCoord2f(tc[3].x, tc[3].y);
gl.glVertex3f(pos.x, pos.y, pos.z);
}
}
gl.glEnd();
}
} else if (particleType == 1) {
gl.glBegin(7);
int count = particles.size();
Vec3 pos = new Vec3();
Vec3 ofs = new Vec3();
float f = 1.0F;
Vec3 bv0 = new Vec3(-f, f, 0.0F);
Vec3 bv1 = new Vec3(f, f, 0.0F);
for (int i = 0; i < count; i++) {
Particle p = (Particle) particles.get(i);
if (p.tile >= texCoords.size() - 1) break;
gl.glColor4f(p.color.x, p.color.y, p.color.z, p.color.w);
Point2f tc[] = (Point2f[]) texCoords.get(p.tile);
Vec3.add(p.pos, Vec3.scale(bv0, p.size, ofs), pos);
gl.glTexCoord2f(tc[0].x, tc[0].y);
gl.glVertex3f(pos.x, pos.y, pos.z);
Vec3.add(p.pos, Vec3.scale(bv1, p.size, ofs), pos);
gl.glTexCoord2f(tc[1].x, tc[1].y);
gl.glVertex3f(pos.x, pos.y, pos.z);
Vec3.add(p.origin, Vec3.scale(bv1, p.size, ofs), pos);
gl.glTexCoord2f(tc[2].x, tc[2].y);
gl.glVertex3f(pos.x, pos.y, pos.z);
Vec3.add(p.origin, Vec3.scale(bv0, p.size, ofs), pos);
gl.glTexCoord2f(tc[3].x, tc[3].y);
gl.glVertex3f(pos.x, pos.y, pos.z);
}
gl.glEnd();
}
gl.glPopMatrix();
}