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Math is hard

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This commit is contained in:
Carlos Sanchez 2024-08-02 00:24:16 -04:00
parent c8b1a82229
commit 7a32dab579
1 changed files with 35 additions and 14 deletions
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49
renderer1/main.go
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@ -5,6 +5,7 @@ import (
"fmt"
"image"
"log"
"math"
"os"
"renderer1/hrend"
"runtime/pprof" // For performance profiling (unnecessary)
@ -23,7 +24,8 @@ const (
FOV = 90.0
ZOffset = 1.5
Movement = 1.0
Rotation = 1.0
Rotation = 0.25
LookLock = math.Pi / 32
Fps = 60
ObjectFile = "../head.obj"
TextureFile = "../head.jpg"
@ -82,6 +84,7 @@ func main() {
defer rl.CloseWindow()
rl.SetTargetFPS(Fps)
rl.DisableCursor()
fb := NewRaylibBuffer(Width, Height)
defer rl.UnloadTexture(fb.Texture)
@ -115,9 +118,10 @@ func main() {
camtrans := hrend.Vec3f{X: 0, Y: 0, Z: ZOffset}
camup := hrend.Vec3f{X: 0, Y: 1, Z: 0}
//xrot := float32(0.0)
//zrot := float32(0.0)
lookvec := hrend.Vec3f{X: 0, Y: 0, Z: -1}
// In our system, 0 degree yaw is facing -Z, into the scene
yaw := float32(0)
pitch := float32(math.Pi / 2) // Start looking flat
// in all three directions... I think??
//yrot := float32(0.0)
@ -125,39 +129,56 @@ func main() {
//var camrotation, camtrans hrend.Mat44f
//camrotation.SetIdentity()
//var camrotx, camroty, camrotz hrend.Mat44f
//var camrotx, camroty hrend.Mat44f
var camera hrend.Mat44f
for !rl.WindowShouldClose() {
start := time.Now()
mouse := rl.GetMouseDelta()
pitch += Rotation * mouse.Y / Fps
yaw += Rotation * mouse.X / Fps
// Need a clamp function or something
if pitch < LookLock {
pitch = LookLock
} else if pitch > math.Pi-LookLock {
pitch = math.Pi - LookLock
}
newcamtrans := hrend.Vec3f{X: 0, Y: 0, Z: 0}
if rl.IsKeyDown(rl.KeyD) {
camtrans.X += Movement / Fps
newcamtrans.X += Movement / Fps
}
if rl.IsKeyDown(rl.KeyA) {
camtrans.X -= Movement / Fps
newcamtrans.X -= Movement / Fps
}
// Moving forward moves in the negative z direction, since we FACE
// the -z axis
if rl.IsKeyDown(rl.KeyW) {
camtrans.Z -= Movement / Fps
newcamtrans.Z -= Movement / Fps
}
if rl.IsKeyDown(rl.KeyS) {
camtrans.Z += Movement / Fps
newcamtrans.Z += Movement / Fps
}
if rl.IsKeyDown(rl.KeySpace) {
camtrans.Y += Movement / Fps
newcamtrans.Y += Movement / Fps
}
if rl.IsKeyDown(rl.KeyLeftShift) {
camtrans.Y -= Movement / Fps
newcamtrans.Y -= Movement / Fps
}
mouse := rl.GetMouseDelta()
mouse.X *= 1 / Fps
mouse.Y *= 1 / Fps
lookvec.Z = float32(-math.Sin(float64(pitch)) * math.Cos(float64(yaw)))
lookvec.X = float32(math.Sin(float64(pitch)) * math.Sin(float64(yaw)))
lookvec.Y = float32(math.Cos(float64(pitch)))
//camrotx.SetRotationX(rotvec.X)
//camroty.SetRotationY(rotvec.Y)
//lookvec := camroty.Multiply(&camrotx).MultiplyPoint3(baselook)
camtrans = *camtrans.Add(&newcamtrans)
//camrotx.SetRotationX(xrot)
//camroty.SetRotationY(yrot)
//camrotz.SetRotationZ(zrot)
//camrotation = *camrotation.Multiply(
// This might (thought not currently)