77 lines
1.6 KiB
C++
77 lines
1.6 KiB
C++
#include "../../../fixC11.h"
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#include "Outline.h"
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#include <QMatrix4x4>
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#include <Indoor/geo/Point3.h>
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#include <QOpenGLWidget>
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#include "Shader.h"
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Outline::Outline() {
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}
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void Outline::render(const RenderSettings& rs) {
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rs.shader->bind();
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// identity
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QMatrix4x4 mat;
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rs.shader->setModelMatrix(mat);
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// show both sides
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//glDisable(GL_CULL_FACE);
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//glEnable(GL_CULL_FACE);
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rs.shader->setColor(color.x, color.y, color.z);
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rs.shader->setVertices(triangles.getVertices().data());
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rs.shader->setNormals(triangles.getNormals().data());
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rs.funcs->glDrawArrays(GL_TRIANGLES, 0, triangles.getVertices().size() / 3);
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rs.shader->unsetVertices();
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rs.shader->unsetNormals();
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rs.shader->release();
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}
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void Outline::setColor(float r, float g, float b) {
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color = Point3(r,g,b);
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}
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void Outline::clear() {
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triangles.clear();
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}
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void Outline::add(std::vector<std::vector<Point3>>& triangles) {
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for (const std::vector<Point3>& tria : triangles) {
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for (size_t i = 2; i < tria.size(); ++i) {
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const Point3 p1 = tria[i-2];
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const Point3 p2 = tria[i-1];
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const Point3 p3 = tria[i-0];
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const Point3 n = cross(p2-p1, p3-p1);
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if (n.z < 0) {
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// upper side (floor)
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this->triangles.addTriangle(p1, p3, p2, Point3(0,0,+1));
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// facing downwards (ceiling)
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this->triangles.addTriangle(p1, p2, p3, Point3(0,0,-1));
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} else {
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// upper side (floor)
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this->triangles.addTriangle(p1, p2, p3, Point3(0,0,+1));
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// facing downwards (ceiling)
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this->triangles.addTriangle(p1, p3, p2, Point3(0,0,-1));
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}
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}
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}
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}
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