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+ | Polygone textured

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TheRedShip
2025-01-29 15:16:04 +01:00
parent c59a9c037f
commit 7eb27a5c2c
3 changed files with 28 additions and 9 deletions
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29
srcs/class/ObjParser.cpp
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@ -98,20 +98,31 @@ int ObjParser::pointInTriangle(glm::vec3 pts[3], std::vector<glm::vec3> vertices
return(0);
}
bool ObjParser::addTriangleFromPolygon(std::vector<glm::vec3> &vertices, int inv)
bool ObjParser::addTriangleFromPolygon(std::vector<glm::vec3> &vertices, std::vector<glm::vec2> &textureVertices, int inv)
{
glm::vec3 v1, v2 ,v3;
glm::vec3 v1, v2, v3;
glm::vec2 vt1, vt2, vt3;
float dot;
for (size_t i = 0; i < vertices.size(); i++)
{
if(!i)
{
v1 = vertices.back();
vt1 = textureVertices.back();
}
else
{
v1 = vertices[i - 1];
vt1 = textureVertices[i - 1];
}
v2 = vertices[i];
v3 = vertices[(i + 1) % vertices.size()];
vt2 = textureVertices[i];
vt3 = textureVertices[(i + 1) % textureVertices.size()];
if (inv)
dot = glm::cross(v2 - v1, v2 - v3).z;
else
@ -122,7 +133,15 @@ bool ObjParser::addTriangleFromPolygon(std::vector<glm::vec3> &vertices, int inv
if(pointInTriangle(triangleVertices, vertices, i))
continue;
vertices.erase(vertices.begin() + i);
addTriangle(v1, v2, v3, std::vector<glm::vec2>(0));
textureVertices.erase(textureVertices.begin() + i);
std::vector<glm::vec2> texture;
texture.push_back(vt1);
texture.push_back(vt2);
texture.push_back(vt3);
addTriangle(v1, v2, v3, texture);
return(1);
}
return(0);
@ -172,8 +191,8 @@ void ObjParser::addFace(std::stringstream &line)
throw std::runtime_error("OBJ : face does not have enough vertices");
while(faceVertices.size() > 3)
if (!addTriangleFromPolygon(faceVertices, 0))
if(!addTriangleFromPolygon(faceVertices, 1))
if (!addTriangleFromPolygon(faceVertices, textureVertices, 0))
if(!addTriangleFromPolygon(faceVertices, textureVertices, 1))
return ;
if(!line.eof())