mirror of
https://github.com/HandmadeMath/HandmadeMath.git
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Commit all this horrible rotation stuff for posterity before I delete it
This commit is contained in:
Ben Visness
BIN
example/Axes.blend
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example/Axes.blend
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example/Axes.mtl
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example/Axes.mtl
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||||
f 137//82 139//82 134//82
|
||||
f 138//82 139//82 137//82
|
||||
f 142//82 140//82 141//82
|
||||
f 142//82 143//82 140//82
|
||||
o Text.002
|
||||
v 1.073616 3.449000 -0.000000
|
||||
v 0.973616 3.449000 -0.000000
|
||||
v 0.857616 3.196000 -0.000000
|
||||
v 0.736616 3.449000 -0.000000
|
||||
v 0.635616 3.449000 -0.000000
|
||||
v 0.809616 3.096000 -0.000000
|
||||
v 0.656616 2.770000 0.000000
|
||||
v 0.755616 2.770000 0.000000
|
||||
v 0.302616 3.589000 -0.000000
|
||||
v 0.302616 3.394000 -0.000000
|
||||
v 0.107616 3.394000 -0.000000
|
||||
v 0.107616 3.312000 -0.000000
|
||||
v 0.302616 3.312000 -0.000000
|
||||
v 0.302616 3.117000 -0.000000
|
||||
v 0.384616 3.117000 -0.000000
|
||||
v 0.384616 3.312000 -0.000000
|
||||
v 0.579616 3.312000 -0.000000
|
||||
v 0.579616 3.394000 -0.000000
|
||||
v 0.384616 3.394000 -0.000000
|
||||
v 0.384616 3.589000 -0.000000
|
||||
vn 0.0000 0.0000 1.0000
|
||||
vn 0.0000 0.0000 -1.0000
|
||||
usemtl None
|
||||
s off
|
||||
f 149//83 147//83 148//83
|
||||
f 149//83 146//83 147//83
|
||||
f 146//83 144//83 145//83
|
||||
f 146//83 151//83 144//83
|
||||
f 149//83 151//83 146//83
|
||||
f 150//83 151//83 149//83
|
||||
f 153//83 163//83 152//83
|
||||
f 153//83 162//83 163//83
|
||||
f 155//83 153//83 154//83
|
||||
f 155//83 162//83 153//83
|
||||
f 155//83 161//83 162//83
|
||||
f 155//83 160//83 161//83
|
||||
f 156//84 160//84 155//84
|
||||
f 157//83 159//83 156//83
|
||||
f 159//83 160//83 156//83
|
||||
f 157//83 158//83 159//83
|
||||
o Text.001
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||||
v -3.138384 0.000000 -0.449000
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v -3.252384 0.000000 -0.449000
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v -3.380384 0.000000 -0.295000
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v -3.513384 0.000000 -0.449000
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v -3.625384 0.000000 -0.449000
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v -3.436384 0.000000 -0.228000
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v -3.625384 0.000000 0.000000
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v -3.513384 0.000000 0.000000
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v -3.380384 0.000000 -0.161000
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v -3.239384 0.000000 0.000000
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v -3.125384 0.000000 0.000000
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v -3.323384 0.000000 -0.228000
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||||
v -3.665384 0.000000 -0.267000
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v -3.908384 0.000000 -0.267000
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||||
v -3.908384 0.000000 -0.174000
|
||||
v -3.665384 0.000000 -0.174000
|
||||
vn 0.0000 1.0000 0.0000
|
||||
usemtl None
|
||||
s off
|
||||
f 169//85 167//85 168//85
|
||||
f 169//85 166//85 167//85
|
||||
f 166//85 164//85 165//85
|
||||
f 166//85 175//85 164//85
|
||||
f 169//85 175//85 166//85
|
||||
f 170//85 175//85 169//85
|
||||
f 170//85 172//85 175//85
|
||||
f 172//85 174//85 175//85
|
||||
f 170//85 171//85 172//85
|
||||
f 173//85 174//85 172//85
|
||||
f 178//85 176//85 177//85
|
||||
f 178//85 179//85 176//85
|
||||
o Text
|
||||
v 4.122616 0.000000 -0.449000
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v 4.008616 0.000000 -0.449000
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v 3.880616 0.000000 -0.295000
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v 3.747616 0.000000 -0.449000
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v 3.635616 0.000000 -0.449000
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v 3.824616 0.000000 -0.228000
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v 3.635616 0.000000 0.000000
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v 3.747616 0.000000 0.000000
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v 3.880616 0.000000 -0.161000
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v 4.021616 0.000000 0.000000
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v 4.135616 0.000000 0.000000
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||||
v 3.937616 0.000000 -0.228000
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v 3.302616 0.000000 -0.589000
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||||
v 3.302616 0.000000 -0.394000
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||||
v 3.107616 0.000000 -0.394000
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||||
v 3.107616 0.000000 -0.312000
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v 3.302616 0.000000 -0.312000
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v 3.302616 0.000000 -0.117000
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v 3.384616 0.000000 -0.117000
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v 3.384616 0.000000 -0.312000
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v 3.579616 0.000000 -0.312000
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v 3.579616 0.000000 -0.394000
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v 3.384616 0.000000 -0.394000
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||||
v 3.384616 0.000000 -0.589000
|
||||
vn 0.0000 1.0000 0.0000
|
||||
vn 0.0000 0.0000 1.0000
|
||||
usemtl None
|
||||
s off
|
||||
f 185//86 183//86 184//86
|
||||
f 185//86 182//86 183//86
|
||||
f 182//86 180//86 181//86
|
||||
f 182//86 191//86 180//86
|
||||
f 185//86 191//86 182//86
|
||||
f 186//86 191//86 185//86
|
||||
f 186//86 188//86 191//86
|
||||
f 188//86 190//86 191//86
|
||||
f 186//86 187//86 188//86
|
||||
f 189//86 190//86 188//86
|
||||
f 193//86 203//86 192//86
|
||||
f 193//86 202//86 203//86
|
||||
f 195//86 193//86 194//86
|
||||
f 195//86 202//86 193//86
|
||||
f 195//86 201//86 202//86
|
||||
f 195//86 200//86 201//86
|
||||
f 196//87 200//87 195//87
|
||||
f 197//86 199//86 196//86
|
||||
f 199//87 200//87 196//87
|
||||
f 197//86 198//86 199//86
|
||||
@@ -147,12 +147,12 @@ public:
|
||||
CubeRenderComponent rc = CubeRenderComponent();
|
||||
|
||||
Cube() {
|
||||
renderComponent = &rc;
|
||||
// renderComponent = &rc;
|
||||
}
|
||||
|
||||
void Tick(float deltaSeconds) override {
|
||||
x += deltaSeconds;
|
||||
position.X = 2.0f * HMM_SINF(x);
|
||||
// position.X = 2.0f * HMM_SINF(x);
|
||||
|
||||
rotation *= HMM_QuaternionFromAxisAngle(HMM_Vec3(0.0f, 1.0f, 0.0f), deltaSeconds * HMM_ToRadians(45.0f));
|
||||
}
|
||||
|
||||
@@ -6,6 +6,8 @@
|
||||
#include "Entity.h"
|
||||
#include "HandmadeMath.h"
|
||||
|
||||
#include "debug.h"
|
||||
|
||||
class FollowCam : public Entity {
|
||||
public:
|
||||
Entity *target;
|
||||
@@ -52,6 +54,58 @@ public:
|
||||
-HMM_ACOSF(HMM_DotVec3(cross, up))
|
||||
);
|
||||
}
|
||||
|
||||
printf("Sort of working:\n");
|
||||
printQuaternion(rotation);
|
||||
printVec4(HMM_QuaternionToMat4(rotation) * HMM_Vec4(1.0f, 0.0f, 0.0f, 0.0f));
|
||||
printMat4(HMM_QuaternionToMat4(rotation));
|
||||
// return;
|
||||
|
||||
hmm_mat4 look = HMM_LookAt(HMM_Vec3(0.0f, 0.0f, 0.0f), HMM_Normalize(target->worldPosition() - worldPosition()), HMM_Vec3(0.0f, 1.0f, 0.0f));
|
||||
rotation = HMM_Mat4ToQuaternion(look);
|
||||
printf("New stuff:\n");
|
||||
printQuaternion(rotation);
|
||||
printVec4(HMM_QuaternionToMat4(rotation) * HMM_Vec4(1.0f, 0.0f, 0.0f, 0.0f));
|
||||
printMat4(HMM_QuaternionToMat4(rotation));
|
||||
// return;
|
||||
|
||||
rotation = HMM_QuaternionFromVectors(HMM_Vec3(0.001462f, -0.449079f, -0.893491f), HMM_Vec3(0.0f, 1.0f, 0.0f));
|
||||
printf("Newer stuff:\n");
|
||||
printQuaternion(rotation);
|
||||
printVec4(HMM_QuaternionToMat4(rotation) * HMM_Vec4(1.0f, 0.0f, 0.0f, 0.0f));
|
||||
printMat4(HMM_QuaternionToMat4(rotation));
|
||||
// return;
|
||||
|
||||
printf("nighttime genius:\n");
|
||||
hmm_vec3 right = HMM_Cross(to, up);
|
||||
hmm_quaternion tiltUp = HMM_QuaternionFromAxisAngle(
|
||||
right,
|
||||
HMM_PI / 2 - HMM_ACosF(HMM_Dot(HMM_Normalize(to), HMM_Normalize(up)))
|
||||
);
|
||||
hmm_vec3 tiltedFwd = (HMM_QuaternionToMat4(tiltUp) * HMM_Vec4v(fwd, 0.0f)).XYZ;
|
||||
hmm_quaternion pointAt = HMM_QuaternionFromAxisAngle(
|
||||
HMM_Cross(right, to),
|
||||
HMM_ACosF(HMM_Dot(HMM_Normalize(tiltedFwd), HMM_Normalize(to)))
|
||||
);
|
||||
rotation = tiltUp * pointAt;
|
||||
printQuaternion(rotation);
|
||||
printVec4(HMM_QuaternionToMat4(rotation) * HMM_Vec4(1.0f, 0.0f, 0.0f, 0.0f));
|
||||
printMat4(HMM_QuaternionToMat4(rotation));
|
||||
// dot products make this bad :(
|
||||
|
||||
// rotate around up vector first?
|
||||
|
||||
// just look, forget the up direction for a bit
|
||||
hmm_quaternion justPointAt = HMM_QuaternionFromAxisAngle(
|
||||
HMM_Cross(fwd, to),
|
||||
HMM_ACosF(HMM_Dot(HMM_Normalize(fwd), HMM_Normalize(to)))
|
||||
);
|
||||
hmm_vec3 newUp = (HMM_QuaternionToMat4(justPointAt) * HMM_Vec4v(up, 0.0f)).XYZ;
|
||||
hmm_quaternion backUpright = HMM_QuaternionFromAxisAngle(
|
||||
to,
|
||||
-HMM_ACosF(HMM_Dot(HMM_Normalize(newUp), HMM_Vec3(0.0f, 1.0f, 0.0f)))
|
||||
);
|
||||
rotation = backUpright * justPointAt;
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
26
example/src/debug.h
Normal file
26
example/src/debug.h
Normal file
@@ -0,0 +1,26 @@
|
||||
#include <stdio.h>
|
||||
|
||||
#ifndef DEBUG_H
|
||||
#define DEBUG_H
|
||||
|
||||
#include "HandmadeMath.h"
|
||||
|
||||
void printVec3(hmm_vec3 v) {
|
||||
printf("%f\t%f\t%f\n", v.X, v.Y, v.Z);
|
||||
}
|
||||
|
||||
void printVec4(hmm_vec4 v) {
|
||||
printf("%f\t%f\t%f\t%f\n", v.X, v.Y, v.Z, v.W);
|
||||
}
|
||||
|
||||
void printQuaternion(hmm_quaternion q) {
|
||||
printf("%f\t%f\t%f\t%f\n", q.X, q.Y, q.Z, q.W);
|
||||
}
|
||||
|
||||
void printMat4(hmm_mat4 m) {
|
||||
for (int r = 0; r < 4; r++) {
|
||||
printf("| %f\t%f\t%f\t%f |\n", m[0][r], m[1][r], m[2][r], m[3][r]);
|
||||
}
|
||||
}
|
||||
|
||||
#endif
|
||||
@@ -75,7 +75,7 @@ int main()
|
||||
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, -1.0f, 0.0f);
|
||||
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));
|
||||
|
||||
@@ -90,6 +90,10 @@ int main()
|
||||
root.AddChild(&c1);
|
||||
root.AddChild(&cam);
|
||||
|
||||
Entity axes = Entity();
|
||||
axes.renderComponent = new MeshRenderComponent("Axes.obj");
|
||||
root.AddChild(&axes);
|
||||
|
||||
bool hasTicked = false;
|
||||
high_resolution_clock::time_point lastTickTime;
|
||||
|
||||
|
||||
Reference in New Issue
Block a user