comparison: src/ldObjectMath.cpp
src/ldObjectMath.cpp
- changeset 944
- 1a6f1997fcbe
- parent 869
- 7184f3bae695
- child 945
- c310073e4f22
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| 943:af81220741d9 | 944:1a6f1997fcbe |
|---|---|
| 39 sinangle = sin (angle); | 39 sinangle = sin (angle); |
| 40 | 40 |
| 41 // ref: http://en.wikipedia.org/wiki/Transformation_matrix#Rotation_2 | 41 // ref: http://en.wikipedia.org/wiki/Transformation_matrix#Rotation_2 |
| 42 Matrix transform ( | 42 Matrix transform ( |
| 43 { | 43 { |
| 44 (l* l * (1 - cosangle)) + cosangle, | 44 (l * l * (1 - cosangle)) + cosangle, |
| 45 (m* l * (1 - cosangle)) - (n* sinangle), | 45 (m * l * (1 - cosangle)) - (n * sinangle), |
| 46 (n* l * (1 - cosangle)) + (m* sinangle), | 46 (n * l * (1 - cosangle)) + (m * sinangle), |
| 47 | 47 |
| 48 (l* m * (1 - cosangle)) + (n* sinangle), | 48 (l * m * (1 - cosangle)) + (n * sinangle), |
| 49 (m* m * (1 - cosangle)) + cosangle, | 49 (m * m * (1 - cosangle)) + cosangle, |
| 50 (n* m * (1 - cosangle)) - (l* sinangle), | 50 (n * m * (1 - cosangle)) - (l * sinangle), |
| 51 | 51 |
| 52 (l* n * (1 - cosangle)) - (m* sinangle), | 52 (l * n * (1 - cosangle)) - (m * sinangle), |
| 53 (m* n * (1 - cosangle)) + (l* sinangle), | 53 (m * n * (1 - cosangle)) + (l * sinangle), |
| 54 (n* n * (1 - cosangle)) + cosangle | 54 (n * n * (1 - cosangle)) + cosangle |
| 55 }); | 55 }); |
| 56 | 56 |
| 57 // Apply the above matrix to everything | 57 // Apply the above matrix to everything |
| 58 for (LDObjectPtr obj : objects) | 58 for (LDObject* obj : objects) |
| 59 { | 59 { |
| 60 if (obj->numVertices()) | 60 if (obj->numVertices()) |
| 61 { | 61 { |
| 62 for (int i = 0; i < obj->numVertices(); ++i) | 62 for (int i = 0; i < obj->numVertices(); ++i) |
| 63 { | 63 { |
| 66 obj->setVertex (i, v); | 66 obj->setVertex (i, v); |
| 67 } | 67 } |
| 68 } | 68 } |
| 69 elif (obj->hasMatrix()) | 69 elif (obj->hasMatrix()) |
| 70 { | 70 { |
| 71 LDMatrixObjectPtr mo = obj.dynamicCast<LDMatrixObject>(); | 71 LDMatrixObjectPtr mo = dynamic_cast<LDMatrixObject*> (obj); |
| 72 | 72 |
| 73 // Transform the position | 73 // Transform the position |
| 74 Vertex v = mo->position(); | 74 Vertex v = mo->position(); |
| 75 RotateVertex (v, rotpoint, transform); | 75 RotateVertex (v, rotpoint, transform); |
| 76 mo->setPosition (v); | 76 mo->setPosition (v); |
| 78 // Transform the matrix | 78 // Transform the matrix |
| 79 mo->setTransform (transform * mo->transform()); | 79 mo->setTransform (transform * mo->transform()); |
| 80 } | 80 } |
| 81 elif (obj->type() == OBJ_Vertex) | 81 elif (obj->type() == OBJ_Vertex) |
| 82 { | 82 { |
| 83 LDVertexPtr vert = obj.staticCast<LDVertex>(); | 83 LDVertexPtr vert = static_cast<LDVertex*> (obj); |
| 84 Vertex v = vert->pos; | 84 Vertex v = vert->pos; |
| 85 RotateVertex (v, rotpoint, transform); | 85 RotateVertex (v, rotpoint, transform); |
| 86 vert->pos = v; | 86 vert->pos = v; |
| 87 } | 87 } |
| 88 } | 88 } |
