static TQ3CameraObject QD3DSupport_NewCamera(float docWidth,
float docHeight)
{
TQ3ViewAngleAspectCameraData perspectiveData;
TQ3CameraObject camera;
TQ3Point3D from = { 30.0F, 50.0F, -50.0F };
TQ3Point3D to = { 30.0F, 0.0F, 0.0F };
TQ3Vector3D up = { 0.0F, 1.0F, 0.0F };
float fieldOfView = 1.2F;
float hither = 0.2F;
float yon = 200.0F;
perspectiveData.cameraData.placement.cameraLocation = from;
perspectiveData.cameraData.placement.pointOfInterest = to;
perspectiveData.cameraData.placement.upVector = up;
perspectiveData.cameraData.range.hither = hither;
perspectiveData.cameraData.range.yon = yon;
perspectiveData.cameraData.viewPort.origin.x = -1.0F;
perspectiveData.cameraData.viewPort.origin.y = 1.0F;
perspectiveData.cameraData.viewPort.width = 2.0F;
perspectiveData.cameraData.viewPort.height = 2.0F;
perspectiveData.fov = fieldOfView;
perspectiveData.aspectRatioXToY = docWidth / docHeight;
camera = Q3ViewAngleAspectCamera_New(&perspectiveData);
return camera ;
}
TQ3CameraObject MyNewCamera(DocumentPtr theDocument)
{
TQ3ViewAngleAspectCameraData perspectiveData;
TQ3CameraObject camera;
TQ3Point3D from = { 0.0F, 0.0F, 7.0F };
TQ3Point3D to = { 0.0F, 0.0F, 0.0F };
TQ3Vector3D up = { 0.0F, 1.0F, 0.0F };
float fieldOfView = 1.0F;
float hither = 0.001F;
float yon = 1000.0F;
TQ3Status returnVal = kQ3Failure ;
perspectiveData.cameraData.placement.cameraLocation = from;
perspectiveData.cameraData.placement.pointOfInterest = to;
perspectiveData.cameraData.placement.upVector = up;
perspectiveData.cameraData.range.hither = hither;
perspectiveData.cameraData.range.yon = yon;
perspectiveData.cameraData.viewPort.origin.x = -1.0F;
perspectiveData.cameraData.viewPort.origin.y = 1.0F;
perspectiveData.cameraData.viewPort.width = 2.0F;
perspectiveData.cameraData.viewPort.height = 2.0F;
perspectiveData.fov = fieldOfView;
perspectiveData.aspectRatioXToY =
(float) (theDocument->fWidth) /
(float) (theDocument->fHeight);
camera = Q3ViewAngleAspectCamera_New(&perspectiveData);
return camera ;
}
void pvCamera_Fit(DocumentPtr theDocument)
{
TQ3Point3D from, to;
TQ3BoundingBox viewBBox;
float fieldOfView, hither, yon;
if (!theDocument)
return;
if (!theDocument->fModel)
return;
pvBBox_Get(theDocument, &viewBBox);
pvBBoxCenter(&viewBBox, &to);
{
TQ3Vector3D viewVector;
TQ3Vector3D normViewVector;
TQ3Vector3D eyeToFrontClip;
TQ3Vector3D eyeToBackClip;
TQ3Vector3D diagonalVector;
float viewDistance;
float maxDimension;
Q3Point3D_Subtract(&viewBBox.max,
&viewBBox.min,
&diagonalVector);
maxDimension = Q3Vector3D_Length(&diagonalVector);
if (maxDimension == 0.0F)
maxDimension = 1.0F;
maxDimension *= 8.0F / 7.0F;
from.x = to.x;
from.y = to.y;
from.z = to.z + (2 * maxDimension);
Q3Point3D_Subtract(&to, &from, &viewVector);
viewDistance = Q3Vector3D_Length(&viewVector);
Q3Vector3D_Normalize(&viewVector, &normViewVector);
maxDimension /= 2.0F;
Q3Vector3D_Scale(&normViewVector,
viewDistance - maxDimension,
&eyeToFrontClip);
Q3Vector3D_Scale(&normViewVector,
viewDistance + maxDimension,
&eyeToBackClip);
hither = Q3Vector3D_Length(&eyeToFrontClip);
yon = Q3Vector3D_Length(&eyeToBackClip);
fieldOfView = Q3Math_RadiansToDegrees(1.25 * ErMath_Atan(maxDimension/hither));
}
{
TQ3ViewAngleAspectCameraData data;
TQ3Vector3D up = { 0.0F, 1.0F, 0.0F };
data.cameraData.placement.cameraLocation = from;
data.cameraData.placement.pointOfInterest = to;
data.cameraData.placement.upVector = up;
data.cameraData.range.hither = hither;
data.cameraData.range.yon = yon;
data.cameraData.viewPort.origin.x = -1.0F;
data.cameraData.viewPort.origin.y = 1.0F;
data.cameraData.viewPort.width = 2.0F;
data.cameraData.viewPort.height = 2.0F;
data.fov = Q3Math_DegreesToRadians(fieldOfView);
{
float w = (float)(theDocument->fWidth);
float h = (float)(theDocument->fHeight);
data.aspectRatioXToY = w/h;
}
if (theDocument->fView)
{
TQ3CameraObject camera;
Q3View_GetCamera(theDocument->fView, &camera);
if (camera) {
Q3ViewAngleAspectCamera_SetData(camera, &data);
Q3Object_Dispose(camera);
}
else {
camera = Q3ViewAngleAspectCamera_New (&data);
if (camera) {
Q3View_SetCamera (theDocument->fView, camera);
Q3Object_Dispose(camera);
}
}
}
}
}
