/**
\brief Draw a target circle and threshold along with the current pad position.
\param idX the ID of the horizontal axis
\param idY the ID of the vertical axis
\param axesValues the axes raw values
\param threshRadius the radius of the filtering threshold
\ingroup ControllerTest
*/
void drawPadTarget(const int idX, const int idY, const std::vector<float> & axesValues, const float threshRadius){
const ImU32 whiteColor = IM_COL32(255,255,255, 255);
const int aidRX = idX;
const int aidRY = idY;
const float magRX = aidRX >= 0 ? axesValues[aidRX] : 0.0f;
const float magRY = aidRY >= 0 ? axesValues[aidRY] : 0.0f;
// Detect overflow on each axis.
const bool overflow = (std::abs(magRX) > 1.0) || (std::abs(magRY) > 1.0);
// Get current rendering position on screen.
const ImVec2 posR = ImGui::GetCursorScreenPos();
ImDrawList * drawListR = ImGui::GetWindowDrawList();
// Draw "safe" region.
drawListR->AddRectFilled(posR, ImVec2(posR.x + 200, posR.y + 200), overflow ? IM_COL32(30,0,0,255) : IM_COL32(0,30,0, 255));
drawListR->AddCircleFilled(ImVec2(posR.x + 100, posR.y + 100), threshRadius, IM_COL32(0, 0, 0, 255), 32);
// Draw frame and cross lines.
drawListR->AddRect(posR, ImVec2(posR.x + 200, posR.y + 200), overflow ? IM_COL32(255,0,0, 255) : whiteColor);
drawListR->AddLine(ImVec2(posR.x + 100, posR.y), ImVec2(posR.x + 100, posR.y+200), whiteColor);
drawListR->AddLine(ImVec2(posR.x, posR.y + 100), ImVec2(posR.x + 200, posR.y+100), whiteColor);
// Draw threshold and unit radius circles.
drawListR->AddCircle(ImVec2(posR.x + 100, posR.y + 100), threshRadius, IM_COL32(0, 255, 0, 255), 32);
drawListR->AddCircle(ImVec2(posR.x + 100, posR.y + 100), 100, whiteColor, 32);
// Current axis position.
drawListR->AddCircleFilled(ImVec2(posR.x + magRX * 100 + 100, posR.y + magRY * 100 + 100), 10, whiteColor);
}
/**
\brief Draw a target line and threshold along with the current trigger position.
\param idT the ID of the trigger axis
\param axesValues the axes raw values
\param threshRadius the value of the filtering threshold
\ingroup ControllerTest
*/
void drawTriggerTarget(const int idT, const std::vector<float> & axesValues, const float threshRadius){
const ImU32 whiteColor = IM_COL32(255,255,255, 255);
const int aidLT = idT;
const float magLT = aidLT >= 0 ? axesValues[aidLT]*0.5+0.5f : 0.0f;
// Detect overflow.
const bool overflow = (magLT > 1.0f || magLT < 0.0f);
// Get current rendering position on screen.
const ImVec2 posR = ImGui::GetCursorScreenPos();
ImDrawList * drawListR = ImGui::GetWindowDrawList();
const float thresholdY = (200.0f-2.0f*threshRadius);
const float currentY = 200*(1.0f-magLT);
// Draw "safe" region.
drawListR->AddRectFilled(posR, ImVec2(posR.x+40, posR.y+thresholdY), overflow ? IM_COL32(30,0,0,255) : IM_COL32(0,30,0, 255));
// Draw threshold line.
drawListR->AddLine(ImVec2(posR.x, posR.y + thresholdY), ImVec2(posR.x + 40, posR.y+thresholdY), IM_COL32(0, 255, 0, 255));
// Draw frame.
drawListR->AddRect(posR, ImVec2(posR.x + 40, posR.y + 200), overflow ? IM_COL32(255,0,0, 255) : whiteColor);
// Current axis position.
drawListR->AddLine(ImVec2(posR.x, posR.y + currentY), ImVec2(posR.x + 40, posR.y + currentY), whiteColor, 4.0f);
}
void TransferFunctionUi::drawControlPointsUi()
{
const ImVec2 p = ui::GetCursorScreenPos();
ImDrawList* drawList = ui::GetWindowDrawList();
int width = ui::GetContentRegionAvailWidth() - 4.0f;
ImU32 white = ImColor(1.0f, 1.0f, 1.0f, 1.0f);
ImU32 black = ImColor(0.0f, 0.0f, 0.0f, 1.0f);
float sz = 20.0f;
float x = p.x + 4.0f;
float y = p.y + 4.0f;
float step = static_cast<float>(width) / 256;
auto& colorPoints = getColorPoints();
auto& alphaPoints = getAlphaPoints();
for (int i = 0; i < 256; i++)
{
const auto& color = getColor(i);
ImU32 col32 = ImColor(color);
// draw color transfer function
drawList->AddLine(ImVec2(x, y), ImVec2(x, y + sz), col32, 2.0f * step);
x += step;
}
for (auto& colorP : colorPoints)
{
const auto& color = colorP.getColor();
ImU32 col32 = ImColor(color.r, color.g, color.b, 1.0f);
ImU32 invCol32 = ImColor(1.0f - color.r, 1.0f - color.g, 1.0f - color.b, 1.0f);
drawList->AddCircleFilled(ImVec2(p.x + step * colorP.getIsoValue() + 4.0f, y + sz), 5, col32, 24);
drawList->AddCircle(ImVec2(p.x + step * colorP.getIsoValue() + 4.0f, y + sz), 5, invCol32, 24);
}
for (int i = 0; i < 255; i++)
{
auto aBegin = clamp(1.0f - getColor(i).a, 0.0f, 1.0f);
auto aEnd = clamp(1.0f - getColor(i + 1).a, 0.0f, 1.0f);
drawList->AddLine(ImVec2(p.x + step * i + 4.0f, y - 124.0f + aBegin * 120),
ImVec2(p.x + step * (i + 1) + 4.0f, y - 124.0f + aEnd * 120), white, 2);
}
for (auto& alphaP : alphaPoints)
{
const auto& alpha = 1.0f - alphaP.getAlpha();
ImU32 opacity = ImColor(1.0f - vec4(alpha));
drawList->AddCircleFilled(ImVec2(p.x + step * alphaP.getIsoValue() + 4.0f, y - 124.0f + alpha * 120), 5, opacity, 24);
drawList->AddCircle(ImVec2(p.x + step * alphaP.getIsoValue() + 4.0f, y - 124.0f + alpha * 120), 5, black, 24);
}
ui::Dummy(ImVec2(width, sz + 15.0f));
}
