void draw(float u)
{
glLoadIdentity();
glLoadMatrixf(glm::value_ptr(camera.getViewMatrix(u)));
glColor3f(0.5f, 0.5f, 0.5f);
glDisable(GL_TEXTURE_2D);
physics.applyVoxelGridConstraint(&voxelGrid);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, circleTexture);
glColor3f(0.75f, 0.75f, 0.75f);
for(Physics::Particles::iterator iter = physics.particles.begin();
iter != physics.particles.end();
++iter)
{
Particle *p = *iter;
glm::vec3 pos = lerp(u, p->x, p->x + p->v * PHYSICS_DT);
glBindTexture(GL_TEXTURE_2D, particleTextures[p->type]);
drawBillboard(camera.position, pos, AABB().include(glm::vec2(0.0f,0.0f)).expand(p->r));
}
voxelGrid.draw();
glm::vec3 direction = camera.getDirection();
glm::ivec3 result;
glBindTexture(GL_TEXTURE_2D, circleTexture);
glm::ivec3 result_face;
float d = voxelGrid.intersectRay(camera.position, direction, result, result_face);
if(d > 0.0f)
{
drawBillboard(camera.position, camera.position + direction * d, AABB().include(glm::vec2(0.0f,0.0f)).expand(0.03f));
}
}
void BillboardLayer::draw(bool deactiveBlendMode)
{
if(useShader&&!deactiveBlendMode)
billboardShader.begin();
if(useAddBlendMode&&!deactiveBlendMode)
ofEnableBlendMode(OF_BLENDMODE_ADD);
ofEnablePointSprites(); // not needed for GL3/4
texture.getTexture().bind();
ofPushMatrix();
ofTranslate(0, 0, posZ);
drawBillboard();
ofPopMatrix();
texture.getTexture().unbind();
ofDisablePointSprites(); // not needed for GL3/4
if(useAddBlendMode&&!deactiveBlendMode)
ofDisableBlendMode();
if(useShader&&!deactiveBlendMode)
billboardShader.end();
}
