void PhysicsFrameSplineEditor::addControlPoint() {
if (m_spline.control.size() == 0) {
m_spline.append(CFrame());
} else if (m_spline.control.size() == 1) {
// Adding the 2nd point
CFrame f = m_spline.control.last();
f.translation += f.lookVector();
m_spline.append(f);
resizeControlPointDropDown(m_spline.control.size());
// Select the new point
setSelectedControlPointIndex(m_selectedControlPointIndex + 1);
} else {
// Adding between two points
float t0 = m_spline.time[m_selectedControlPointIndex];
float newT = t0;
float evalT = 0;
if (m_selectedControlPointIndex < m_spline.control.size() - 1) {
// Normal interval
newT = m_spline.time[m_selectedControlPointIndex + 1];
evalT = (t0 + newT) / 2;
} else if (m_spline.extrapolationMode == SplineExtrapolationMode::CYCLIC) {
// After the end on a cyclic spline
newT = m_spline.getFinalInterval() + t0;
evalT = (t0 + newT) / 2;
} else {
// After the end on a non-cyclic spline of length at least
// 2; assume that we want to step the distance of the previous
// interval
newT = evalT = 2.0f * t0 - m_spline.time[m_selectedControlPointIndex - 1];
}
const PhysicsFrame f = m_spline.evaluate(evalT);
m_spline.control.insert(m_selectedControlPointIndex + 1, f);
m_spline.time.insert(m_selectedControlPointIndex + 1, newT);
// Select the new point
resizeControlPointDropDown(m_spline.control.size());
setSelectedControlPointIndex(m_selectedControlPointIndex + 1);
// Fix the rest of the times to be offset by the inserted duration
float shift = newT - t0;
for (int i = m_selectedControlPointIndex + 1; i < m_spline.time.size(); ++i) {
m_spline.time[i] += shift;
}
}
}
void AudioDevice::simulate
(const float dt,
const float timeScaleAtListener,
const CFrame& wsListenerFrame,
const Vector3& wsListenerVelocity) {
m_listenerPosition = wsListenerFrame.translation;
if (m_engine) {
m_engine->setListenerPosition
(g3dToirrKlang(wsListenerFrame.translation),
g3dToirrKlang(wsListenerFrame.lookVector()),
g3dToirrKlang(wsListenerVelocity),
g3dToirrKlang(wsListenerFrame.upVector()));
}
m_timeScaleAtListener = timeScaleAtListener;
if (m_music) {
m_music->setPlaybackSpeed(speedAdjust(timeScaleAtListener));
if (m_music->isFinished()) {
m_music->drop();
m_music = NULL;
}
}
// Update already-playing 3D sounds
for (int s = 0; s < m_active3D.size(); ++s) {
ISound* sound = m_active3D[s];
if (sound->isFinished()) {
// End
m_active3D.fastRemove(s);
--s;
} else {
sound->setPosition(sound->getPosition() + dt * sound->getVelocity());
}
}
}
void ShadowMap::computeMatrices
(const shared_ptr<Light>& light,
AABox sceneBounds,
CFrame& lightFrame,
Projection& lightProjection,
Matrix4& lightProjectionMatrix,
float lightProjX,
float lightProjY,
float lightProjNearMin,
float lightProjFarMax,
float intensityCutoff) {
if (! sceneBounds.isFinite() || sceneBounds.isEmpty()) {
// Produce some reasonable bounds
sceneBounds = AABox(Point3(-20, -20, -20), Point3(20, 20, 20));
}
lightFrame = light->frame();
if (light->type() == Light::Type::DIRECTIONAL) {
Point3 center = sceneBounds.center();
if (! center.isFinite()) {
center = Point3::zero();
}
// Move directional light away from the scene. It must be far enough to see all objects
lightFrame.translation = -lightFrame.lookVector() *
min(1e6f, max(sceneBounds.extent().length() / 2.0f, lightProjNearMin, 30.0f)) + center;
}
const CFrame& f = lightFrame;
float lightProjNear = finf();
float lightProjFar = 0.0f;
// TODO: for a spot light, only consider objects this light can see
// Find nearest and farthest corners of the scene bounding box
for (int c = 0; c < 8; ++c) {
const Vector3& v = sceneBounds.corner(c);
const float distance = -f.pointToObjectSpace(v).z;
lightProjNear = min(lightProjNear, distance);
lightProjFar = max(lightProjFar, distance);
}
// Don't let the near get too close to the source, and obey
// the specified hint.
lightProjNear = max(lightProjNearMin, lightProjNear);
// Don't bother tracking shadows past the effective radius
lightProjFar = min(light->effectSphere(intensityCutoff).radius, lightProjFar);
lightProjFar = max(lightProjNear + 0.1f, min(lightProjFarMax, lightProjFar));
debugAssert(lightProjNear < lightProjFar);
if (light->type() != Light::Type::DIRECTIONAL) {
// TODO: Square spot
// Spot light; we can set the lightProj bounds intelligently
alwaysAssertM(light->spotHalfAngle() <= halfPi(), "Spot light with shadow map and greater than 180-degree bounds");
// The cutoff is half the angle of extent (See the Red Book, page 193)
const float angle = light->spotHalfAngle();
lightProjX = tan(angle) * lightProjNear;
// Symmetric in x and y
lightProjY = lightProjX;
lightProjectionMatrix =
Matrix4::perspectiveProjection
(-lightProjX, lightProjX, -lightProjY,
lightProjY, lightProjNear, lightProjFar);
} else if (light->type() == Light::Type::DIRECTIONAL) {
// Directional light
// Construct a projection and view matrix for the camera so we can
// render the scene from the light's point of view
//
// Since we're working with a directional light,
// we want to make the center of projection for the shadow map
// be in the direction of the light but at a finite distance
// to preserve z precision.
lightProjectionMatrix =
Matrix4::orthogonalProjection
(-lightProjX, lightProjX, -lightProjY,
lightProjY, lightProjNear, lightProjFar);
} else {
// Omni light. Nothing good can happen here, but at least we
// generate something
lightProjectionMatrix =
Matrix4::perspectiveProjection
(-lightProjX, lightProjX, -lightProjY,
lightProjY, lightProjNear, lightProjFar);
}
float fov = atan2(lightProjX, lightProjNear) * 2.0f;
lightProjection.setFieldOfView(fov, FOVDirection::HORIZONTAL);
lightProjection.setNearPlaneZ(-lightProjNear);
lightProjection.setFarPlaneZ(-lightProjFar);
}