void RenderableTextEntityItem::render(RenderArgs* args) {
PerformanceTimer perfTimer("RenderableTextEntityItem::render");
Q_ASSERT(getType() == EntityTypes::Text);
static const float SLIGHTLY_BEHIND = -0.005f;
glm::vec4 textColor = glm::vec4(toGlm(getTextColorX()), 1.0f);
glm::vec4 backgroundColor = glm::vec4(toGlm(getBackgroundColorX()), 1.0f);
glm::vec3 dimensions = getDimensions();
// Render background
glm::vec3 minCorner = glm::vec3(0.0f, -dimensions.y, SLIGHTLY_BEHIND);
glm::vec3 maxCorner = glm::vec3(dimensions.x, 0.0f, SLIGHTLY_BEHIND);
// Batch render calls
Q_ASSERT(args->_batch);
gpu::Batch& batch = *args->_batch;
bool success;
Transform transformToTopLeft = getTransformToCenter(success);
if (!success) {
return;
}
if (getFaceCamera()) {
//rotate about vertical to face the camera
glm::vec3 dPosition = args->_viewFrustum->getPosition() - getPosition();
// If x and z are 0, atan(x, z) is undefined, so default to 0 degrees
float yawRotation = dPosition.x == 0.0f && dPosition.z == 0.0f ? 0.0f : glm::atan(dPosition.x, dPosition.z);
glm::quat orientation = glm::quat(glm::vec3(0.0f, yawRotation, 0.0f));
transformToTopLeft.setRotation(orientation);
}
transformToTopLeft.postTranslate(glm::vec3(-0.5f, 0.5f, 0.0f)); // Go to the top left
transformToTopLeft.setScale(1.0f); // Use a scale of one so that the text is not deformed
batch.setModelTransform(transformToTopLeft);
DependencyManager::get<DeferredLightingEffect>()->bindSimpleProgram(batch, false, false, false, true);
DependencyManager::get<GeometryCache>()->renderQuad(batch, minCorner, maxCorner, backgroundColor);
float scale = _lineHeight / _textRenderer->getFontSize();
transformToTopLeft.setScale(scale); // Scale to have the correct line height
batch.setModelTransform(transformToTopLeft);
float leftMargin = 0.1f * _lineHeight, topMargin = 0.1f * _lineHeight;
glm::vec2 bounds = glm::vec2(dimensions.x - 2.0f * leftMargin,
dimensions.y - 2.0f * topMargin);
_textRenderer->draw(batch, leftMargin / scale, -topMargin / scale, _text, textColor, bounds / scale);
}
void TextEntityItem::appendSubclassData(OctreePacketData* packetData, EncodeBitstreamParams& params,
EntityTreeElementExtraEncodeData* modelTreeElementExtraEncodeData,
EntityPropertyFlags& requestedProperties,
EntityPropertyFlags& propertyFlags,
EntityPropertyFlags& propertiesDidntFit,
int& propertyCount,
OctreeElement::AppendState& appendState) const {
bool successPropertyFits = true;
APPEND_ENTITY_PROPERTY(PROP_TEXT, getText());
APPEND_ENTITY_PROPERTY(PROP_LINE_HEIGHT, getLineHeight());
APPEND_ENTITY_PROPERTY(PROP_TEXT_COLOR, getTextColor());
APPEND_ENTITY_PROPERTY(PROP_BACKGROUND_COLOR, getBackgroundColor());
APPEND_ENTITY_PROPERTY(PROP_FACE_CAMERA, getFaceCamera());
}