本文整理汇总了C++中tgt::vec2方法的典型用法代码示例。如果您正苦于以下问题：C++ tgt::vec2方法的具体用法？C++ tgt::vec2怎么用？C++ tgt::vec2使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类tgt的用法示例。
在下文中一共展示了tgt::vec2方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: mouseMoveEvent
void TransFuncMappingCanvasRamp::mouseMoveEvent(QMouseEvent* event) {
unsetCursor();
event->accept();
mousePos_ = event->pos();
vec2 sHit = vec2(event->x(), static_cast<float>(height()) - event->y());
vec2 hit = stow(sHit);
// return when no key was inserted or selected
if (!dragging_)
return;
// keep location within valid texture coord range
hit = tgt::clamp(hit, 0.f, 1.f);
if (selectedKey_ != 0) {
TransFuncMappingKey* leftKey = tf_->getKey(0);
TransFuncMappingKey* rightKey = tf_->getKey(1);
if (selectedKey_ == leftKey) {
// obey ramp function restrictions:
// left key has to stay left of right key
hit.x = std::min<float>(hit.x, rightKey->getIntensity());
// max width = 1.f, min center = 0.f
float minX = rightKey->getIntensity() - 1.f;
float maxY = std::min(-minX, 0.5f);
hit.y = std::min(hit.y, maxY);
if (rightKey->getIntensity() == 1.f) {
minX = rightKey->getIntensity() - rightKey->getColorL().a / 255.f;
hit.x = std::max(hit.x, minX);
}
// moving left upwards only allowed if at left border (ramp function)
if (hit.x != 0.f)
hit.y = 0.f;
}
else {
// obey ramp function restrictions:
// right key has to stay right of right key
hit.x = std::max<float>(hit.x, leftKey->getIntensity());
// max width = 1.f, max center = 1.f
float maxX = leftKey->getIntensity() + 1.f;
float minY = std::max(2.f - maxX, 0.5f);
hit.y = std::max(hit.y, minY);
if (leftKey->getIntensity() == 0.f) {
float maxX = 1.f - leftKey->getColorL().a / 255.f;
hit.x = std::min(hit.x, maxX);
}
// moving right downwards only allowed if at right border (ramp function)
if (hit.x != 1.f)
hit.y = 1.f;
}
selectedKey_->setIntensity(hit.x);
selectedKey_->setAlphaL(hit.y);
calcRampParameterFromKeys();
updateCoordinates(event->pos(), vec2(hit.x, selectedKey_->getAlphaL()));
repaint();
emit changed();
}
}示例2: createType
Serializable* KeyValueFactory::createType(const std::string& typeString) {
using tgt::ivec2;
using tgt::ivec3;
using tgt::ivec4;
using tgt::vec2;
using tgt::vec3;
using tgt::vec4;
using tgt::mat2;
using tgt::mat3;
using tgt::mat4;
if (typeString == "KeyValue_float")
return new PropertyKeyValue<float>(0, 0);
else if (typeString == "KeyValue_int")
return new PropertyKeyValue<int>(0, 0);
else if (typeString == "KeyValue_bool")
return new PropertyKeyValue<bool>(0, 0);
else if (typeString == "KeyValue_ivec2")
return new PropertyKeyValue<ivec2>(ivec2(0), 0);
else if (typeString == "KeyValue_ivec3")
return new PropertyKeyValue<ivec3>(ivec3(0), 0);
else if (typeString == "KeyValue_ivec4")
return new PropertyKeyValue<ivec4>(ivec4(0), 0);
else if (typeString == "KeyValue_vec2")
return new PropertyKeyValue<vec2>(vec2(0.0f), 0);
else if (typeString == "KeyValue_vec3")
return new PropertyKeyValue<vec3>(vec3(0.0f), 0);
else if (typeString == "KeyValue_vec4")
return new PropertyKeyValue<vec4>(vec4(0.0f), 0);
else if (typeString == "KeyValue_mat2")
return new PropertyKeyValue<mat2>(mat2(0.0f), 0);
else if (typeString == "KeyValue_mat3")
return new PropertyKeyValue<mat3>(mat3(0.0f), 0);
else if (typeString == "KeyValue_mat4")
return new PropertyKeyValue<mat4>(mat4(0.0f), 0);
else if (typeString == "KeyValue_Camera")
return new PropertyKeyValue<tgt::Camera>(tgt::Camera(vec3(0.0f), vec3(0.0f), vec3(0.0f)), 0);
else if (typeString == "KeyValue_string")
return new PropertyKeyValue<std::string>("", 0);
else if (typeString == "KeyValue_ShaderSource")
return new PropertyKeyValue<ShaderSource>(ShaderSource(), 0);
else if (typeString == "KeyValue_TransFunc")
return new PropertyKeyValue<TransFunc*>(new TransFunc(), 0);
else if (typeString == "KeyValue_VolumeCollection")
return new PropertyKeyValue<VolumeCollection*>(new VolumeCollection(), 0);
else if (typeString == "KeyValue_VolumeHandle")
return new PropertyKeyValue<VolumeHandle*>(new VolumeHandle(), 0);
else
return 0;
}示例3: transformMouseCoordinates
tgt::MouseEvent* ScalingProcessor::transformMouseCoordinates(tgt::MouseEvent* e, int scalingMode, RenderPort* inport, RenderPort* outport ) const {
float aspectRatioIn = (float)inport->getSize().x / (float)inport->getSize().y;
float aspectRatioOut = (float)outport->getSize().x / (float)outport->getSize().y;
vec2 scalingFactor(1.f);
switch(scalingMode) {
case 0:
break;
case 1:
//map pixels 1:1
scalingFactor = vec2((float)inport->getSize().x / (float)outport->getSize().x, (float)inport->getSize().y / (float)outport->getSize().y);
break;
case 2:
//scale respecting aspect ratio and view all of the inport:
if (aspectRatioOut < aspectRatioIn) {
scalingFactor = vec2(1.0f, aspectRatioOut/aspectRatioIn);
}
else {
scalingFactor = vec2(aspectRatioIn/aspectRatioOut, 1.0f);
}
break;
case 3:
//scale respecting aspect ratio and fill outport:
if (aspectRatioOut < aspectRatioIn) {
scalingFactor = vec2(aspectRatioIn/aspectRatioOut, 1.0f);
}
else {
scalingFactor = vec2(1.0f, aspectRatioOut/aspectRatioIn);
}
break;
case 4:
//scale to height:
scalingFactor = vec2(aspectRatioIn/aspectRatioOut, 1.0f);
break;
case 5:
//scale to width:
scalingFactor = vec2(1.0f, aspectRatioIn*aspectRatioOut);
break;
default:
break;
}
// compute transformation
vec2 pixelOffset = ((1.f - scalingFactor) * vec2(outport->getSize())) / 2.f;
vec2 pixelScale = (vec2(outport->getSize())*scalingFactor) / vec2(inport_.getSize());
vec2 trafoCoords = (vec2(e->coord()) - pixelOffset)/pixelScale;
// clone event and assign transformed coords
tgt::MouseEvent* trafoEvent = new tgt::MouseEvent(*e);
trafoEvent->setCoord(ivec2(trafoCoords));
trafoEvent->setViewport(inport->getSize());
return trafoEvent;
}示例4:
tgt::vec2 TrackballNavigation::scaleMouse(const tgt::ivec2& coords, const tgt::ivec2& viewport) const {
return vec2( static_cast<float>(coords.x*2.f) / static_cast<float>(viewport.x) - 1.f,
1.f - static_cast<float>(coords.y*2.f) / static_cast<float>(viewport.y) );
}