mirror of
https://github.com/recastnavigation/recastnavigation.git
synced 2026-08-16 16:19:55 +00:00
81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
#include "AppData.h"
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#include "SDL_opengl.h"
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#ifdef __APPLE__
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# include <OpenGL/glu.h>
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#else
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# include <GL/glu.h>
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#endif
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#include <imgui.h>
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AppData::~AppData()
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{
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delete sample;
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sample = nullptr;
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delete inputGeometry;
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inputGeometry = nullptr;
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}
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void AppData::resetCamera()
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{
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// Reset camera and fog to match the mesh bounds.
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if (inputGeometry)
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{
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const float* boundsMin = inputGeometry->getNavMeshBoundsMin();
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const float* boundsMax = inputGeometry->getNavMeshBoundsMax();
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camr = sqrtf(
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rcSqr(boundsMax[0] - boundsMin[0]) + rcSqr(boundsMax[1] - boundsMin[1]) +
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rcSqr(boundsMax[2] - boundsMin[2])) /
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2;
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cameraPos[0] = (boundsMax[0] + boundsMin[0]) / 2 + camr;
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cameraPos[1] = (boundsMax[1] + boundsMin[1]) / 2 + camr;
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cameraPos[2] = (boundsMax[2] + boundsMin[2]) / 2 + camr;
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camr *= 3;
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}
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cameraEulers[0] = 45;
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cameraEulers[1] = -45;
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glFogf(GL_FOG_START, camr * 0.1f);
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glFogf(GL_FOG_END, camr * 1.25f);
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}
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void AppData::updateWindowSize()
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{
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SDL_GetWindowSize(window, &width, &height);
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SDL_GL_GetDrawableSize(window, &drawableWidth, &drawableHeight);
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glViewport(0, 0, drawableWidth, drawableHeight);
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glGetIntegerv(GL_VIEWPORT, viewport);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(50.0f, static_cast<float>(width) / static_cast<float>(height), 1.0f, camr);
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glGetDoublev(GL_PROJECTION_MATRIX, projectionMatrix);
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}
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void AppData::updateUIScale() const
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{
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ImGuiIO& io = ImGui::GetIO();
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io.DisplaySize = ImVec2(static_cast<float>(width), static_cast<float>(height));
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io.DisplayFramebufferScale = ImVec2(
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static_cast<float>(drawableWidth) / static_cast<float>(width),
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static_cast<float>(drawableHeight) / static_cast<float>(height));
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}
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void AppData::worldToScreen(float x, float y, float z, float* screenX, float* screenY) const
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{
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GLdouble modelviewMatrix[16];
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glGetDoublev(GL_MODELVIEW_MATRIX, modelviewMatrix);
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GLdouble winX, winY, winZ;
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gluProject(x, y, z, modelviewMatrix, projectionMatrix, viewport, &winX, &winY, &winZ);
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const float dpiScaleX = static_cast<float>(drawableWidth) / static_cast<float>(width);
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const float dpiScaleY = static_cast<float>(drawableHeight) / static_cast<float>(height);
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*screenX = static_cast<float>(winX) / dpiScaleX;
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*screenY = static_cast<float>(height) - static_cast<float>(winY / dpiScaleY);
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}
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