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WIP camera stuff. Missing some useful quaternion helpers.

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Ben Visness
2018-06-11 15:40:31 -05:00
parent 3a382212f9
commit 88d583e6ac
3 changed files with 114 additions and 11 deletions
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34
example/src/main.cpp
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@@ -11,6 +11,7 @@
#include "Entity.h"
#include "Cube.h"
#include "MeshRenderComponent.h"
#include "FollowCam.h"
void TickTree(Entity *e, float deltaSeconds);
void ComputeModelMatrices(Entity *ep, hmm_mat4 parentModelMatrix);
@@ -67,17 +68,27 @@ int main()
// Accept fragment if it closer to the camera than the former one
glDepthFunc(GL_LESS);
Cube root = Cube();
Cube c1 = Cube();
Entity child = Entity();
child.position = HMM_Vec3(2.1f, 0.0f, 0.0f);
child.renderComponent = new MeshRenderComponent("MonkeySmooth.obj");
Entity monkey = Entity();
monkey.position = HMM_Vec3(2.1f, 0.0f, 0.0f);
monkey.renderComponent = new MeshRenderComponent("MonkeySmooth.obj");
FollowCam cam = FollowCam(&monkey);
// cam.position = HMM_Vec3(3.0f, 3.0f, 4.0f);
cam.position = HMM_Vec3(3.0f, 3.0f, 5.0f);
// cam.rotation = HMM_QuaternionFromAxisAngle(HMM_Vec3(0.0f, 1.0f, 0.0f), HMM_ToRadians(90.0f));
// Cube c = Cube();
// child.position = HMM_Vec3(2.1f, 0.0f, 0.0f);
// monkey.position = HMM_Vec3(2.1f, 0.0f, 0.0f);
// child.AddChild(&c);
root.AddChild(&child);
// monkey.AddChild(&c);
c1.AddChild(&monkey);
Entity root = Entity();
root.AddChild(&c1);
root.AddChild(&cam);
bool hasTicked = false;
high_resolution_clock::time_point lastTickTime;
@@ -85,10 +96,6 @@ int main()
do {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
hmm_mat4 projection = HMM_Perspective(90.0f, 1024.0f / 768.0f, 0.1f, 100.0f);
hmm_mat4 view = HMM_LookAt(HMM_Vec3(3.0f, 3.0f, 4.0f), HMM_Vec3(0.0f, 0.0f, 0.0f), HMM_Vec3(0.0f, 1.0f, 0.0f));
hmm_mat4 vp = projection * view;
// Tick
auto now = high_resolution_clock::now();
if (hasTicked) {
@@ -103,6 +110,10 @@ int main()
ComputeModelMatrices(&root, HMM_Mat4d(1.0f));
// Render!
hmm_mat4 projection = cam.projectionMatrix();
hmm_mat4 view = cam.viewMatrix();
hmm_mat4 vp = projection * view;
auto it = EntityIterator(&root);
while (it.HasNext()) {
Entity *e = it.Next();
@@ -142,6 +153,7 @@ void TickTree(Entity *e, float deltaSeconds) {
}
void ComputeModelMatrices(Entity *e, hmm_mat4 parentModelMatrix) {
e->parentModelMatrix = parentModelMatrix;
e->modelMatrix = parentModelMatrix * HMM_Translate(e->position) * HMM_QuaternionToMat4(e->rotation) * HMM_Scale(e->scale);
for (int i = 0; i < e->children.size(); i++) {