comparison: src/gl/partrenderer.cpp
src/gl/partrenderer.cpp
- changeset 59
- 60650929dc82
- parent 58
- b7841cd31fb7
- child 60
- 0f221121849b
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| 58:b7841cd31fb7 | 59:60650929dc82 |
|---|---|
| 298 { | 298 { |
| 299 auto p1 = this->unproject({point.x(), point.y(), 0}); | 299 auto p1 = this->unproject({point.x(), point.y(), 0}); |
| 300 auto p2 = this->unproject({point.x(), point.y(), 1}); | 300 auto p2 = this->unproject({point.x(), point.y(), 1}); |
| 301 geom::Line line = geom::lineFromPoints(p1, p2); | 301 geom::Line line = geom::lineFromPoints(p1, p2); |
| 302 std::optional<glm::vec3> result; | 302 std::optional<glm::vec3> result; |
| 303 // If the dot product between the line direction and plane normal is negative, the point | 303 result = geom::linePlaneIntersection(line, plane, 0.01f); |
| 304 // of intersection lies behind the camera. | 304 // If the point lies behind the camera, do not return a result. |
| 305 if (glm::dot(line.direction, plane.normal) > 0) | 305 if (result.has_value() and glm::dot(line.direction, *result - p1) < 0) |
| 306 { | 306 { |
| 307 result = geom::linePlaneIntersection(line, plane, 0.01); | 307 result.reset(); |
| 308 } | 308 } |
| 309 return result; | 309 return result; |
| 310 } | 310 } |
| 311 | 311 |
| 312 /** | 312 /** |
