pederbs/TDT4230_final_project
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Small optimization, no having to recompute a matrix for all objects

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Peder Bergebakken Sundt
2019-03-22 00:05:50 +01:00
parent a5bfa4c237
commit 0475f17110
3 changed files with 11 additions and 4 deletions
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8
src/renderlogic.cpp
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@@ -60,8 +60,10 @@ void initRenderer(GLFWwindow* window, CommandLineOptions options) {
// traverses and updates matricies
void updateNodeTransformations(SceneNode* node, mat4 transformationThusFar, mat4 const& V, mat4 const& P) {
mat4 transformationMatrix
= glm::translate(mat4(1.0), node->position)
mat4 M = (node->has_no_transforms())
? transformationThusFar
: transformationThusFar
* glm::translate(mat4(1.0), node->position)
* glm::translate(mat4(1.0), node->referencePoint)
* glm::rotate(mat4(1.0), node->rotation.z, vec3(0,0,1))
* glm::rotate(mat4(1.0), node->rotation.y, vec3(0,1,0))
@@ -69,8 +71,6 @@ void updateNodeTransformations(SceneNode* node, mat4 transformationThusFar, mat4
* glm::scale(mat4(1.0), node->scale)
* glm::translate(mat4(1.0), -node->referencePoint);
mat4 M = transformationThusFar * transformationMatrix;
node->MV = V*M;
node->MVP = P*node->MV;
node->MVnormal = glm::inverse(glm::transpose(node->MV));