// Transforms image (resize, rotate, flip, brightness, contrast)
func (c *Convertor) TransformImage(img image.Image) image.Image {
var i image.Image = img
if c.Opts.Width > 0 || c.Opts.Height > 0 {
if c.Opts.Fit {
i = imaging.Fit(i, c.Opts.Width, c.Opts.Height, filters[c.Opts.Filter])
} else {
i = imaging.Resize(i, c.Opts.Width, c.Opts.Height, filters[c.Opts.Filter])
}
}
if c.Opts.Rotate > 0 {
switch c.Opts.Rotate {
case 90:
i = imaging.Rotate90(i)
case 180:
i = imaging.Rotate180(i)
case 270:
i = imaging.Rotate270(i)
}
}
if c.Opts.Flip != "none" {
switch c.Opts.Flip {
case "horizontal":
i = imaging.FlipH(i)
case "vertical":
i = imaging.FlipV(i)
}
}
if c.Opts.Brightness != 0 {
i = imaging.AdjustBrightness(i, c.Opts.Brightness)
}
if c.Opts.Contrast != 0 {
i = imaging.AdjustContrast(i, c.Opts.Contrast)
}
return i
}
func setupScene(gameEngine engine.Engine, shader *renderer.Shader) {
camera := gameEngine.Camera()
transparentNode := renderer.NewNode()
gameEngine.AddSpatialTransparent(transparentNode)
transparentNode.RendererParams = &renderer.RendererParams{
DepthTest: true,
Unlit: true,
Transparency: renderer.EMISSIVE,
}
// Sky cubemap
skyImg, err := assets.ImportImage("TestAssets/cloudSky.jpg")
if err == nil {
skyImg = imaging.AdjustBrightness(skyImg, -30)
skyImg = imaging.AdjustContrast(skyImg, 30)
geom := renderer.CreateSkyBox()
geom.Transform(mgl32.Scale3D(10000, 10000, 10000))
skyNode := renderer.NewNode()
skyNode.SetOrientation(mgl32.QuatRotate(1.57, mgl32.Vec3{0, 1, 0}))
skyNode.Material = renderer.NewMaterial(renderer.NewTexture("diffuseMap", skyImg, false))
skyNode.RendererParams = renderer.NewRendererParams()
skyNode.RendererParams.CullBackface = false
skyNode.RendererParams.Unlit = true
skyNode.Add(geom)
gameEngine.AddSpatial(skyNode)
// create an environmentMap using the skybox texture
envCubeMap := renderer.NewCubemap("environmentMap", skyImg, true)
gameEngine.DefaultCubeMap(envCubeMap)
}
// load scene objs
objs := []string{
"TestAssets/wellScene/floor.obj",
"TestAssets/wellScene/frame1.obj",
"TestAssets/wellScene/frame2.obj",
"TestAssets/wellScene/well.obj",
"TestAssets/wellScene/torches.obj",
}
for _, objFile := range objs {
if geom, mat, err := assets.ImportObjCached(objFile); err == nil {
sceneNode := renderer.NewNode()
sceneNode.Add(geom)
sceneNode.Material = mat
sceneNode.RendererParams = renderer.NewRendererParams()
sceneNode.RendererParams.CullBackface = false
gameEngine.AddSpatial(sceneNode)
}
}
for i := 0; i < 2; i++ {
torchLocation := mgl32.Vec3{0.86, 1.76, 1.05}
if i == 1 {
torchLocation = mgl32.Vec3{0.86, 1.76, -1.05}
}
fire := fireParticles()
spark := sparkParticles()
torchParticles := effects.NewParticleGroup(camera, fire, spark)
torchParticles.SetTranslation(torchLocation)
transparentNode.Add(torchParticles)
gameEngine.AddUpdatable(torchParticles)
light := renderer.NewLight(renderer.POINT)
light.SetTranslation(torchLocation.Add(mgl32.Vec3{0, 0.05, 0}))
gameEngine.AddLight(light)
var x float64
gameEngine.AddUpdatable(engine.UpdatableFunc(func(dt float64) {
x += dt
mag := float32(math.Abs(0.6*math.Sin(3*x)+0.3*math.Sin(4*x)+0.15*math.Sin(7*x)+0.1*math.Sin(15*x))) + 0.5
mag *= 0.05
light.Color = [3]float32{1 * mag, 0.6 * mag, 0.4 * mag}
}))
}
}