Rendering学習日記

rman.goにLightSourceを追加する

func LightSource(name string, varargs ...interface{}) {

    pName := C.CString(name)

    defer C.free(unsafe.Pointer(pName))

    names, values, ownership := unzipArgs(varargs...)

    defer freeArgs(names, ownership)

    nArgs := C.RtInt(len(varargs) / 2)

    pNames, pVals := safeArgs(names, values)

    C.RiLightSourceV(pName, nArgs, pNames, pVals)

}

Teapotをレンダリング

package main



import (

    ri "rman"

)



func color(r, g, b float32) [3]float32 {

    return [3]float32{r, g, b}

}



func point(x, y, z float32) [3]float32 {

    return [3]float32{x, y, z}

}



func main() {

    launch := "launch:prman? -t -ctrl $ctrlin $ctrlout -capture test2.rib"

    ri.Begin(launch)

    ri.Format(512, 480, 1)

    ri.Display("test2", "framebuffer", "rgba")

    ri.ShadingRate(4)

    ri.Option("limits", "int threads", 4)

    ri.PixelSamples(4, 4)

    ri.Declare("color", "color")

    ri.Imager("background","color",color(0.2,0.4,0.6))

    ri.Projection("perspective", "fov", 45.)

    ri.Translate(0, 0, 9)

    ri.WorldBegin()

    ri.Declare("from", "point")

    ri.Declare("intensity", "float")

    ri.LightSource("pointlight","intensity",300. ,"from", point(-10,10,-10))

    ri.LightSource("pointlight","intensity",300. ,"from", point(10,10,-10))

    ri.LightSource("pointlight","intensity",300. ,"from", point(-10,-10,-10))

    ri.Translate(0, -1.2, 0)

    ri.Rotate(-110,1,0,0)

    ri.Color(0.9, 0, 0.1)

    ri.Surface("plastic")

    ri.Geometry("teapot")

    ri.WorldEnd()

    ri.End()

}